230 DR. M. KHALIL ON THE NEMATODE 



cement on the vulva is fairly marked. The ova are colourless 

 jxnd thin-shelled and have a granular yolk. 

 Tvpe-species, Quilonia renniei. 



QuiLONiA RESNiEi Ptaill., Henry & Joy., 1913. 



Nematode No. 2 from Indian elephant. Evans & Rein;ie, 1910. 



Evansia renniei Raill., Hemy & Joy., 1913. 



Quilonia quiloiia Lane, 1914. 



Evansia renniei Lane, 1915. 



jYematevansia renviei Jhle, 1919. 



Quilonia renniei Ihle, 1919. 



Tlie main features of this species, as described by Evans and 

 Rennie and also l)y Lane, are: (a) the leaf-crown projects freely 

 above the head, (h) the leaflets are thin and long, (c) the dorsal 

 ray bifurcates low down in the bursa, and (d) its tri-radiate final 

 branches are very thin and arise at different levels. (For 

 measurements see Table II.) 



Habitat. Caecum of the Indian elephant (India). 



Quilonia tranvacra Lane, 1914. 



Quilonia tranvacra Lane, 1914. 



Evansia tranvacra Raill., Henry & Bauche, 1915. 



Nematevansia tranvacra Ihle, 1919. 



Quilonia tranvacra Lane, 1921. 



The leaf -crown does not project above the head. It consists 

 of ten rays. The branches of the dorsal ray are stouter and 

 longer than in Q. renniei. (For measurements see Table II., 

 p. 249.) 



Habitat. Caecum ? of the Indian elephant (India). 



Quilonia apiensis Gedoelst, 1916. (Text-figs. 22-28.) 



Evansia ajnensis Gedoelst, 1916. 



Quilonia apiensis Lane, 1921. 



This parasite was recorded by Gedoelst unaccompanied by figures, 

 la the genus Quilonia it is extremely difficult to differentiate 

 species on description o)ily. Lane, in describing Q. africana, 

 expressed his regret that Q. apiensis was recorded without figures. 

 The same difliculty was experienced in examining the material 

 at my disposal without a full knowledge of Q. a2yiensis. Later, 

 Prof. Gedoelst very generously sent co-type material of his species 

 to be added to Prof. Leiper's collection. This made possible a 

 complete description of the species with camera-Iucida drawings. 



Material. — The material consisted of 25 specimens labelled 

 Quilonia apiensis (co-types) from Prof. Gedoelst. Of these, eight 

 specimens are kept in the Helminthological collection of the 

 London School of Tropical Medicine. In addition, three speci- 

 mens were identified by me in Prof. Leiper's material. 



Shape of body. — The body is straight, slender, and tapei'ing 

 towards either end. The male is 16 mm. long and the female is 



