460 



Dr. H. A. Baylis on a 



tliickness is 0*7-0'8 ram. in tlie males, 0*9-1 '1 mm. in the 

 females. [Tlie largest specimen in the material from Atilax 

 is 43'8 mm. long and about 1*2 mm. thick.] In the male 

 the body is slender towards the posterior end, wli\ile in the 

 female the. posterior portion of the body, which contains the 

 genital organs, is somewhat thickened. The transverse 

 cuticular striations in the middle region of the body are at 

 intervals of 6 yit or a little more. The diameter of the head is 



Fiff. 1. 



1 



Cloeoascaris spinicollis. Anterior end of female ; dorsal view. 

 c, cuticular collar ; p., cervical papilla. 



0*13-0*15 mm. in the male, 0*16-017 nmi. in the female. 

 There are three small rounded lips (tigs. 1 and 2), each 

 bearing externally two prominent papillae. The papil]a3 of 

 the dorsal lip are double, as are also the more ventral 

 papillae of the ventro-lateral lips. The more lateral papilla 

 of each ventro-lateral lip is simple, very small, and situated on 

 the anterior surface. On its inner surface each lip is armed 

 with a pair of sharp conical teeth (fig. 2, t., t.'), separated 



