NEMATODE GENUS PHYSALOPTERA. 



1043 



(15) Physaloptera pr^eputialis von Linstow, 1889. (Text- 

 figs. 21 & 22.) 



Syn. Chlamydonenia felineus Hegt, 1910. 



Several lots of material were examined, mostly from cats. 



The body is slightly attenuated anteriorly, and is surrounded 

 posteriorly by a very loose cuticle, which is partly or wholly 

 reflected over the tail region. The cuticle shows a very fine 

 transverse cuticular str-iation, and is only slightly reflected over 

 the lips. 



The excretory pore and cervical papillae are situated relatively 

 far back, the former being more posterior in position than the 

 latter. The distance from the anterior end to the cervical 



Text-figure 21. 



JPhysaloptera prisputialis v. Linst. 

 A = Lateral view of cephalic extremity. 

 B = Caudal extremity of male. 



Dapillse in a male 15 mm. long is 875 jj. and the excretory pore 

 990 fx ; in a female 17 mm. long these distances were 952^ and 

 1123 ^ respectively. 



The lips are lai-ge and conical, and each carries a subdorsal 

 and subventral external papilla. The external median tooth is 

 large and bluntly triangular ; the inner median tooth is of the 

 same height as the outer, and is flattened and tripartite. 



The oesophagus is long, and varies in the female from 1/4*8 to 

 l/5'4 of the body-length ; in the male it forms about 1/4*5 of the 

 body-length. The muscular portion of the oesophagus is slightly 

 thinner than the glandular, and is encircled by the nerve ring at 

 the junction of its second and last thirds. It forms about l/8th 

 of the whole oesophagus. 



