286 



Dr. M. Khalll on a neio 



Each uterus ends in an ovejector. The vagina is very sliort 

 and is surrounded with a buried cuticular ring. The vulva 

 is not raised above the surface and opens 3'2 mm. from the 

 tail-end. 



Bursa. — The male bursa is closed all round, there being no 

 distinct demarcation between the lateral and the dorsal lobes. 

 The lateral lobes are frequently folded. The ventro- ventral 

 ray is small and runs horizontally, being widely separated 

 from the latero-ventral ray (Hg. 4). The latere- ventral ray 

 lies close to and parallel with the externo-lateral ray. Its 

 tip is directed forwards. The trunk of the lateral rays arises 



Fig. 5. 



/oo // 

 Lateral view of male bursa. 



in common with the latero-ventral ray. It divides at the 

 same level into three rays of equal thickness. The tip of the 

 ventro-lateral ray is directed forwards. The tip of the medio- 

 lateral ray lies at right angles to the edge of the bursa. The 

 tip of the dorso-lateral ray is directed dorsally (fig. 5). The 

 externo-dorsal ray arises from the dorsal ray close to its 

 origin. It is a comparatively thick ray and ends a sliort 

 distance from the edge of the bursa. The dorsal ray is thin, 

 0*09 mm. in length. It bifurcates in its lower 0*03 mm. into 

 two delicate branches, each of which ends in two fine prongs 

 at the edge of the bursa. 



