DAILEY and PERRIN: HELMINTH PARASITES OF PORPOISES 



Garsin, 1730, were recovered from the fore- 

 stomachs of three hosts (two S. longiwstris 

 and one S. graffmaiii). Members of this genus 

 are commonly parasites of teleost fishes and 

 were probably ingested with a meal of fish 

 and not established parasites of these hosts. 



Cestoda 



Tetrabothrint)i forsteri (Krefft, 1871) 

 Fuhrmann, 1904 



This cestode was recovered from the intestine 

 of over 50% of the examined hosts and occurred 

 in both S. graffmani and S. longirostiis. This 

 is the first report of this parasite from either 

 of these hosts. T. forsteri (Krefft, 1871) was 

 first described by Krefft (1871) under the name 

 of Taenia forsteri from DelpJiinK.s delpJiis L. 

 (= D. forsteri) caught off the coast of New 

 Zealand and later transferred to the genus 

 Tetrahothriu m by Fuhrmann (1904). A com- 

 plete review of the literature on this species 

 is given by Delyamure (1955). 



Strobilocephiiliis triangulurh (Diesing, 1850) 

 Baer, 1932 



This tetrabothriid has a complex taxonomic 

 history that is covered by Delyamure (1955). 

 The parasite apparently anchors its scolex in 

 the colon wall when small and grows inside a 

 fibrotic capsule formed by the host (Figures 11 

 and 12). This is the first report of this parasite 

 from the genus Ste)ieUa. It has been reported 

 from the Pacific Ocean by Baer (1955), who 

 described material taken from an unidentified 

 dolphin captured in the waters of the Marshall 

 Islands. There are numerous reports of the 

 parasite from Atlantic Ocean hosts {Hyperoodon 

 ampullatus) (Forster, 1770) (= H. rostratus), 

 Mesoplodon bideus (Sowerby, 1804), Lageno- 

 rhynchus acutus (Gray, 1828), Steno hredanen- 

 sis Lesson, 1828 (= S. frontatus), Delphinus 

 sp. (Delyamure, 1955). 



Phyllobothriiiiu delpbiui (Bosc, 1802) and 

 MoHorygma grimaldii iM.oniez, 1881) Baylis, 1919 



These larval cestodes were recovered from 



Figure 11. — Section through the capsule and scolex of Strohilocephalus trUin^ularis from the rectum of 



S. grajjmnm. (X10.5) 



463 



