NEMATODE GfiNtrS i'HYSALOPTE&A. 



1017 



from each other, the first, however, being more ventral in origin ; 

 two pairs are pre-anal, and the other two pairs are post-anal in 

 position. The three pre-anal ventral papillse are situated in a 

 row immediately in front of the anus. There are five pairs of 

 post-anal jjapillse, of which pairs 1 and 2 are small and situated 

 close together immediately behind the anus, one pair being 

 slightly more posterior than the other ; pairs 3, 4, and 5 are 

 equidistant from each other ; the distance between the 2nd and 

 3rd pairs is about half that between the 3rd and 4th pairs, and 

 the distance between the 5th pair and the tip of the tail is about 

 twice that between the 4th and 5th pairs. 



Text-figure 5. 



Physaloptera papiUotruncata Mol. 

 A = Cephalic extremity of body. 

 B = Inner view of median labial teeth. 

 C = Caudal extremity of male. 



The spicules are equal and straight ; the right spicule is slightly 

 slenderer than the left, and ends in a sharp point; the end of 

 the left spicule is slightly flattened out to form a small spear- 

 head ; they are 360 ^ long by 35 and 38 ^ thick at their base 

 respectively. 



Host: Myo'-ynecophaga juhata. Stomach. Brazil. 



Types in bottle 4477 in the Yienna Museum. 



Discussion. — See Ph. maxillaris. 



(3) Physaloptera semilanceolata Molin, 1860. (Text-fig. 6.) 

 The material examined was somewhat shrunken, but in 

 excellent preservation. 



The cuticle is finely striated, and shows, in addition, an 



