WHICH DIED IN THE ZOOLOGICAL GARDENS. 909 



SpiRURiNiE Railliet, 1915. 

 Cylicospirura sub^qualis (Molin, 1860), gen. n. 



In 1918, Seurat described a Spirurid from the stomach of Felis 

 ocreata Gmeiin (10). This worm he considered to be identical 

 with Spiroptera suhcequalis Molin (11), and placed it in the genus 

 Sjnrocerca, as it conformed in many respects to the type-species 

 of that genus [Spirocerca sangttinolenta of the Dog). 



He published a description with a drawing of the mouth 

 capsule of the worm taken from a single specimen, v/hich he 

 states was very much flattened by the pressure of the cover-glass. 

 My material consisted of three females and one male collected 

 from the stomach of a Tiger {Felis tigris), Malay States. 



The measurements of these specimens correspond in every way 

 to those of the worm described by Seurat from Jf". ocreata, except 

 in regard to the mouth capsule, which is much wider in the 

 latter, due no doubt, as Seurat suggests, to the pressure. This 

 writer also states that the chitinous teeth in the mouth capsule 

 are tricuspid, whereas in my specimens they are bicuspid. 



Yon Drasche in 1882 revised Molin's type material, and figures 

 the cephalic and caudal extremities of the male. In his figure 

 of the mouth-parts he shows each of the chitinous teeth as 

 bicuspid (12). 



I have also compared my material with an unpublished drawing 

 of the cephalic extremity made by Prof. R. T. Leiper from 

 Molin's type-specimens in the Vienna Museum, and I find it 

 agrees in every i-espect. 



Seurat, therefore, has either made aii error of observation, 

 due perhaps to the flattened state of his specimens, or he has 

 confused another species with *S'. sulcequalis, of Molin. 



Moreover, as the mouth capsule of this worm with its armature 

 of teeth in no way conforms to the type of the genus Spirocerca 

 (S. sanguinolenta), I wish to propose a new genus, Cylicospirura, 

 with G. suhcequalis as the type-species. 



Cylicospirura, gen. n. 



Generic diagnosis.- — Spirurince : Body elongated, tapering 

 slightly anteriorly. Mouth circular, surrounded by six small 

 papilla;. The mouth capsule is deeper and conical in shape, with 

 the apex of the cone in apposition to the anterior end of the 

 oesophagus. It is provided with six triangular chitinous plates 

 arranged radically, each of the internal free ends of which termi- 

 nates in a bicuspid tooth which projects slightly beyond the 

 entrance to the mouth capsule. 



The tail of the male is twisted spirally, and is furnished with 

 a narrow symmetrical bursa, which has four pairs of preanal and 

 two pairs of postanal papillte. The spicules are unequal, the 



