lions which have died in zoological parks or 

 marine aquaria in New York; Maryland; Wash- 

 ington, D.C.; Louisiana; California; Switzer- 

 land; and Germany; as evidence indicates that 

 in most cases the sea lions were definitely cap- 

 tured in western North American waters and 

 were infected prior to capture. Information ob- 

 tained since publication of the first list has led 

 us to exclude Anisakis tridentatus Kreis, 1938 

 from the present list. This species was de- 

 scribed by Kreis (1938) from material col- 

 lected from the stomach and lungs of a "Eume- 

 topias jubata Schreb." that had died in 1935 in 

 the Zoological Gardens, Basel, Switzerland. Ac- 

 cording to Dr. Hans A. Kreis (personal comm- 

 nication to L. Margolis, January 17, 1955), the 

 host was probably Zalophus calif ornianus rath- 

 er than E. jubatus and was born in the Basel 

 Zoological Gardens, living there until its death; 

 its parents were imported from California. 

 Clearly, since infection of the definitive host 

 with anisakid nematodes is via ingestion of in- 

 termediate hosts, the sea lion must have become 

 infected in the Basel Zoo through its food, 

 rather than directly from its parents. There- 

 fore, A. tridentatus cannot be considered as a 

 parasite that occurs on the west coast of North 

 America. 



Tadros (1966) reported the nematode Spiro- 

 cerca lupi (Rudolphi, 1809) from tumours in 

 the aorta of a Z. calif ornianus which had died 

 in the Giza Zoo, Cairo, UAR. No information 

 was provided on the history of this animal 

 which would allow any speculation regarding 

 the origin of the infection; consequently this 

 record is not included in the list. 



The present list has been compiled from the 

 literature up to December 31, 1970. Records of 

 parasites that have not been identified at least 

 to the generic level are not included, except 

 for microfilariae in the blood. Several errors 

 in the 1954 list are corrected here. A few pre- 

 viously unpublished records from the files of 

 the first author are also included. 



For nomenclature of hosts we have followed 

 Rice and Scheffer (1968) . In listing synonyms 

 of parasites we give only those names used in 

 the literature dealing with the parasites of ma- 

 rine mammals from the North American west 

 coast. 



PARASITE-HOST LIST 



Trematoda 



Braunina cordiformis Wolf, 1903 



Host: Tur stops truncatus - bottle-nosed 



dolphin. 

 Locality: California. 

 Recorded by: Johnston and Ridgway (1969). 



Campula oblonga Cobbold, 1858 



Host: Phocoena phocoena - harbour porpoise. 



Location: Liver. 



Locality: Washington. 



Recorded by: Ching and Robinson (1959). 



Cryptocotyle jejuna (Nicoll, 1907) Ransom, 



1920 

 Host: Callorhinus ursinus - northern fur seal. 

 Location: Intestine. 

 Locality: Alaska. 

 Recorded by: Neiland ( 1961 ) ; Keyes ( 1965) . 



Hadwenius nipponicus Yamaguti, 1951 



Host: Phocoena, phocoena - harbour porpoise. 



Location: Stomach (fourth chamber). 



Locality: Washington. 



Recorded by: Ching and Robinson (1959). 



Hadwenius seymouri Price, 1932 



Syn.: Odhneriella seymouri (Price, 1932) 

 Skrjabin and Schulz, 1935. 



Host: Delphinapterus leucas - white whale. 



Location: Intestine. 



Locality: Alaska. 



Recorded by: Price (1932). 



Remarks: Skrjabin (1944) considered Had- 

 wenius to be a synonym of Odhneriella, but 

 Yamaguti (1951) retained it as a valid genus 

 and described a second species. 



Lecithodesmus sp. 



Hosts: Balaenoptera borealis - sei whale; 

 Megaptera novaeangliae - humpback whale. 

 Location: Bile ducts. 

 Locality: California. 

 Recorded by: Rice (1963). 



