68 



(P. Z. G. Lab., 1158), the same bird from which were also 

 obtained the examples of ascarides above described under 

 the name Ascaris ardece. The precise part of the alimentary 

 tract from which the specimen was derived cannot be stated, 

 inasmuch as the notes of autopsy merely mention the fact 

 that the parasites, including the ascarides, fragments of a 

 tapeworm (T. unilateralis, Duj.), and the present specimen, 

 were "found in the proventricle, stomach, and intestine." 

 Presumably the worm was a solitary example of its species 

 in the host, being found alone and, although apparently 

 fully developed, having no ova in its genital tubes. The 

 specimen measures 17 mm. in length and 0.7 mm. in diameter 

 at thickest level, near the middle of the body length; slightly 

 attenuate anteriorly, tapering very much less posteriorly until 

 close to the end of the tail, where it suddenly contracts into a 

 conical tip bent strongly upon the dorsum. Specimen rigid, 

 colorless; cuticle rather coarsely striated transversely. At 

 the head end, beginning at the base of the prominent lateral 

 lip on each side, there pass two raised sinuous lines, sub- 

 median, backward to nearly the middle of the body length, 

 extending then dorsally and ventrally respectively to join 

 similar lines upon the opposite side of the worm. The head 

 at base of the lips measures 0.15 mm. in transverse diameter. 

 Two lateral lips, each with double papilhp. Esophagus 

 2 mm. in length, made up of two portions, an anterior narrow 

 portion 0.8 mm. long and 0.05 to 0.09 mm. in diameter, 

 which suddenly enters a second wider portion 1.2 mm. long 

 and about 0.2 mm. in diameter. Intestine simple and straight. 

 Anus 0.35 mm. from tip of tail. At level of anus the body 

 suddenly narrows to form the conical end of the tail, present- 

 ing on each side of the anal orifice a marked ventrolateral 

 rounded (mammillary) prominence. Vulva near middle of 

 body length. Specimen non-gravid. 



