DAILEY and PERRIN: HELMINTH PARASITES OF PORPOISES 



nematode parasitizing a marine mam- 

 mal. The general body shape of this 

 nematode is similar to that seen in 

 Vas()rliabdocho)ia cablei Martin and 

 Zam, 1967, Trichospirura Uptoatoma 

 Smith and Chitwood, 1967, and Frei- 

 tasia teixeirai Barus and Coy, 1965. 

 However, the structure of lips and buccal 

 capsule place it in the subfamily As- 

 caropsinae rather than with the rhab- 

 dochonids. Of the genera in this sub- 

 family it most closely resembles the 

 genus Pereirai Cuocolo, 1943. It differs 

 from Pereirai in the following char- 

 acteristics; lips are unlobed, cuticular 



few annular thickenings, esophagus not 

 divided into anterior and posterior por- 

 tions, and vulva in posterior half of body. 



Crassicaudidae Skrjabin et Andrews, 1934 



Crassicauda sp. A single infection of this 

 tissue nematode was found in the 78 animals 

 examined (1.3%). The worms were in the ab- 

 dominal muscle adjacent to the mammary 

 gland of S. longirostns. A large abdominal 

 cyst was also found in the same area. Sections 

 revealed large numbers of Crassicauda sp. eggs 

 as well as portions of the female worm (Figure 

 7). Entire worms were not recovered so specific 



flange is lacking, buccal capsule has identification was not possible. However, egg 





1 



I 





i"^ 











Figure 7. — Section through abdominal cyst with Cnissicauda eggs. (X150) 



459 



