61 



example of an undereribed dispharagiis; ihe autopsy protocol 

 stating for the entire material that (lie parasites were found 

 in the proventriele, stomach, and intestine. Presumably, 

 inasmuch as the tapeworm fragments are much more likely 

 to have been in the intestine and because the dispharagus 

 was a solitary example, some of these asea rides were found in 

 the upper portion of the tract. 



The specimens are colorless, rigid, round in section, thick- 

 est posterior to middle of body length, ta|>ering attenuately 

 to the anterior and less finely posteriorly. Cuticle finely 

 striated transversely, without alar expansions; longitudinal 

 lateral line's well-marked. 



The largest female measures SO mm. in length, and at 

 thickest level (about third fourth of length) 1.8 mm. in diam- 

 eter. Head (Fig. 1) at base of lips 0.4 mm. in diameter; 

 head rounded, with three prominent lips and well-marked 

 interlabia (Fig. 2). Lips nearly equal, the superior provided 

 with two and each ventrolateral lip with one papilla. Su- 

 perior lip (Fig. 3) four-sided, the angles rounded, anterior 

 and lateral lx>rders finely denticulate, lateral borders 

 convex. 



Lip deeply grooved; unpaired lobe of pulpa prominent; 

 lateral lobes provided with anteromedian, anterior, and lateral 

 lobules. Esophagus with triradiate lumen, slender, expand- 

 ing posteriorly in clavate fashion, without bulb, but with a 

 valve-like opening into the intestine. Intestine simple, 

 straight, terminating at anus 1.1 mm. from tip of tail. Tail 

 (Fig. 4) acutely conical. Vulva :-50 mm. from head end. 

 Ova (Fig. 5) taken from uterus measured 105 to 110 micro- 

 millimeters in length, 96 to 100 micromillimeters trans- 

 versely, spheroidal in shape, with colorless skell marked by 

 thickly set pits (giving at first impression the appearance 

 of fine spines over the surface but really pitted, and the walls 

 of the uterus where these ova lay having elevations corre- 

 sponding with the pits); interior in advanced segmentation, 

 brownish. The females in the posterior half of the body 

 usually closely coiled. 



