PARASITES OF ELEPHANTS. 229 



The oral aperture is surrounded by a cu-cle of converging rays. 

 The mouth capsule is large and like a funnel in shape. Rounded 

 cuticular prominences protrude into the oral cavity. 



Male : The most striking featui-e of the bursa is an accessory 

 ray projecting from tJie dorsal aspect of the main stem of tlie 

 lateral ray. The two spicules are similar and equal. There is 

 an accessory piece. Railliet wrongly recorded that the dorsal 

 ray divides into four branches instead of tliree. 



Female : The vulva is close to the anus, where the worm 

 suddenly narrows. The tail is bluntly conical. 



Type-sj^ecies, Choniangium epistomum. 



Ohoniangium epistomum Plana & Stazzi, 1900. 



Sclerostomum ejjistoinicni Plana & Stazzi, 1900. 

 Choniangium ejjistonnun Raill., Henry & Bauche, 1914. 

 Asifia vasifa Lane, 1914. 



Tlie male measures 14 mm. in length, with a maximum diameter 

 near the head of 0*75 mm. The spicules are 2-0 mm. in length. 



The female is 19 mm. in length, with a maximum diameter of 

 1 -0 mm. The vagina runs cephalad, joining the two parallel uteri. 

 The ova measure 50 jx by 25 fx. 



Habitat. Otiecum of the Indian elephant (India). 



Genus QuiLONiA Lane, 1914. 



Evansia Railliet, Henry & Joyeux, 1913 (not Evansia Scott, 

 1906, for a copepod). 

 Qidlonia Lane, 1914. 

 -N'ematevansiic Ihle, 1919. 

 Quilonia Ihle, 1919. 



Fairly slender worms ; the head discoid, the mouth terminal 

 and surrounded by two sessile lateral and four prominent sub- 

 median papillae. The rays of the external leaf-crown are few 

 and characteristically curved. The cuticular lining of the oral 

 cavity does not lie directly in contact with the chitinous mouth 

 capsule. The mouth-ojDening is narrower than the diameter of 

 the oral cavity. The ossophagus is nearly cylindrical in shape. 

 Two or more teeth project into the oral cavity. 



Male : The bursa is more or less distinctly divided into three 

 lobes. The dorsal lobe is longer than the lateral lobes. The 

 bui'sal rays are the usual number. The dorsal ray is bifurcate, 

 ea,ch branch having three subdivisions. The spicules are equal 

 and similar, and each has a sickle-shaped point. The accessor}^ 

 piece is curved from side to side, the concavity being ventrad. 

 Seen from the dorsum it is wider cephalad than caudad. 



Female : The vulva is in the caudal third of the body. The 

 uteri are opposed, divergent and furnished with marked ovejectors. 

 The caudad uterus turns cephalad immediately beyond its 

 ovejector. Tlie two uteri run cephalad side by side. Brown 



