A new species of beaked whale Mesoplodon peruvianus sp. n. (Cetacea: Ziphiidae)
from Peru.
JULIO C. REYES, JAMES G. MEAD AND KOEN VAN WAEREBEEK .............................1

Occurrence and behavior of the southern right whale dolphin Lissodelphis peronii off Namibia.
BARRIE ROSE AND ANDREW I. L. PAYNE .....................................................................25

A paternity test case for the killer whale (Orcinus orca) by DNA fingerprinting.
A. RUS HOELZEL, JOHN K. B. FORD AND GABRIEL A. DOVER .................................35

Accuracy of age determination in the grey seal Halichoerus grypus of eastern Canada.
A. W. MANSFIELD ..............................................................................................................44

Modeling age-specific mortality for marine mammal populations.
JAY BARLOW AND PETER BOVENG ..............................................................................50

Cutaneous ridges in odontocetes.
P. A. SHOEMAKER AND S. H. RIDGWAY .......................................................................66

Interactions between Kuril seals and salmon trap net fishery in the coastal waters of
southeastern Hokkaido.
KAZUO WADA, SHIN-ICHI HAYAMA, TOSHIYASU NAKAOKA
AND HIROYUKI UNO........................................................................................................ 75

NOTES

Antibodies to canine distemper virus in antarctic seals.
J. L. BENGTSON, P. BOVENG, U. FRANZN, P. HAVE,
M. P. HEIDE-JORGENSEN AND T. J. HŽRK™NEN ........................................................85

BOOKS

Reviews ..................................................................................................................................88

The Comprehensive Assessment of Whale Stocks--The Early Years. G. P. Donovan, ed.
Reports of the International Whaling Commission (Special Issue 11).
The International Whaling Commission, The Red House, Station Road, Histon,
Cambridge, England.
Reviewed by Michael Kingsley.

BUSINESS ............................................................................................................................92

LETTERS

Scientific Correspondence .......................................................................................................94

MEMORIES

David Keller Caldwell .............................................................................................................97

John Gulland, FRS ..................................................................................................................99

NEWS .................................................................................................................................100

GUIDE FOR AUTHORS .....................................................................................................101

Rate of increase, 1978 - 1988, of bowhead whales, Balaena mysticetus, estimated
from ice-based census data.
JUDITH E. ZEH, JOHN C. GEORGE, ADRIAN E. RAFTERY
AND GEOFFRY M. CARROLL .........................................................................................105

The role of predation in the ecology of the ringed seal in Barrow Strait, Northwest
Territories, Canada.
M. O . HAMMILL AND T. G . SMITH ..............................................................................123

Diet of Weddell seals Leptonychotes weddellii at Vestkapp, eastern Weddell Sea
(Antarctica), in relation to local food supply.
JOACHIM PL™TZ, WERNER EKAU AND PETER J. H. REIJNDERS ...........................136

Precise birth timing in captive harbor seals (Phoca vitulina) and California sea lions
(Zalophus californianus).
JONATHAN L. TEMTE ......................................................................................................145

A method for estimating mass of large pinnipeds.
MICHAEL P. HALEY, CHARLES J. DEUTSCH AND BURNEY J. LE BOEUF ..............157

An epizootic of Florida manatees associated with a dinoflagellate bloom.
THOMAS J. O SHEA, GALEN B. RATHBUN, ROBERT K. BONDE,
CLAUS D. BUERGELT AND DANIEL K. ODELL ...........................................................165

Distribution patterns of individually identifiable West Indian manatees
(Trichechus manatus) in Florida.
JAMES P. REID, GALEN B. RATHBUN AND J. ROSS WILCOX ..................................180

NOTES

On disease transmission between cetaceans and humans.
J . R. GERACI AND S. H. RIDGWAY ...............................................................................191

Dolphins of the genus Lagenorhynchus in the tropical South Pacific.
STEPHEN LEATHERWOOD, JACK S. GROVE AND ANNA E. ZUCKERMAN ...........194

Feeding behavior of a humpback whale in low-latitude waters.
LISA S. BARAFF, PHILLIP J. CLAPHAM, DAVID K. MATTILA
AND ROBERT S. BOWMAN ............................................................................................197

BOOKS

Reviews ...............................................................................................................................203

Marine Mammal Research and Conservation in Sri Lanka 1985-86. Stephen Leatherwood
and Randall R. Reeves, eds. Marine Mammal Technical Report Number 1.
Available from United Nations Environment Programme, Oceans and Coastal Areas,
Programme Activity Centre, P.O. Box 30552, Nairobi, Kenya.
Reviewed by Helene Marsh.

Marine Pollution. R. B. Clark. Oxford Science Publications, Claredon Press,
Oxford and Cary NC.
Reviewed by Donald C. Malins.

The Natural History of Seals. W. Nigel Bonner, Facts on File Inc., New York and Oxford.
Reviewed by Donald B. Siniff.

NEWS .................................................................................................................................208

Reproduction, survival and tag loss in California sea otters.
DONALD B. SINIFF AND KATHERINE RALLS .............................................................211

Density dependent growth in North Pacific sperm whales.
TOSHIO KASUYA .............................................................................................................230

Acoustic reflectivity of nets: implications concerning incidental take of dolphins.
WHITLOW W. L. AU AND LINDA JONES ......................................................................258

Modifying gillnets to reduce entanglement of cetaceans.
STEPHEN M. DAWSON ....................................................................................................274

Incidental catch of Hector's dolphin in inshore gillnets.
STEPHEN M. DAWSON ....................................................................................................283

NOTES

Recent cetacean records for southeastern Brazil.
NELIO B. BARROS ............................................................................................................296

Movement of humpback whales between California and Costa Rica.
GRETCHEN H. STEIGER, JOHN CALAMBOKIDIS, RICHARD SEARS,
KENNETH C. BALCOMB, AND JAMES C. CUBBAGE .................................................306

Sexual and ontogenetic variation in the pelvic bones of Dugong dugon (Sirenia).
DARYL P. DOMNING .......................................................................................................311

Seven bowhead whales (Balaena mysticetus L.) observed at Franz Josef Land in 1990.
OYSTEIN WIIG ..................................................................................................................316

BOOKS

Reviews ................................................................................................................................320

The Pinnipeds: Seals, Sea Lions, and Walruses. M. Riedman. University of California Press,
Berkeley.
Reviewed by Peter Shaughnessy.

LETTERS

Scientific Correspondence .....................................................................................................323

MEMORIES

Takahisa Nemoto ..................................................................................................................324

Michael Andrew Bigg ............................................................................................................326

NEWS ..................................................................................................................................329

Hydrostasis in the sirenia: quantitative data and functional interpretation.
DARYL P. DOMNING AND VIVIAN DE BUFFRENIL ...................................................331

Diving patterns of northern elephant seal bulls.
BRENT S. STEWART AND ROBERT L. DELONG ..........................................................369

Sexual dimorphism in newborn southern sea lions.
H. LUIS CAPPOZZO, CLAUDIO CAMPAGNA AND JOSE MONSERRAT ..................385

Sea otter diets in a declining population in Alaska.
GREGORY A. GREEN AND JOHN J. BRUEGGEMAN ...................................................395

The narwhal, Monodon moncerus, in the Norwegian high arctic.
IAN GJERTZ .......................................................................................................................402

NOTES

Reaction of sperm whales (Physeter catodon) to tagging with implanted sonar transponder
and radio tags.
WILLIAM A. WATKINS AND PETER TYACK ................................................................409

Anthracosis in the Atlantic bottlenose dolphin (Tursiops truncatus).
ARNOLD J. RAWSON, HOWARD F. ANDERSON, GEOFFREY W. PATTON
AND TRACEY BEECHER ..................................................................................................413

BOOKS

Reviews ................................................................................................................................417

Whaling Communities. North Atlantic Studies 2(2-1). E. Vestergaard, ed. 1990.
Published by Aarhus University, Denmark.
Reviewed by Randall R. Reeves.

The Bottlenose Dolphin. Stephen Leatherwood and Randall R. Reeves, eds.
Academic Press, San Diego, CA.
Reviewed by Peter B. Best.

NEWS .................................................................................................................................423

INDEX ................................................................................................................................424