292 



Memoirs of the Indian Museum. 



[Vol. VII, 



Genus Ascaridia, Duj., 1845. 



Ascaridia perspicillum (Rud., 1803.) 



(Fig. 25.) 

 Hosts : 



Common fowl. 



Blood pheasant {Ithagenes cruentus). 



In view of the scarcity of figures of the male tail we furnish a new one 

 (% 25). 



Ascaridia columbae (Gmelin, 1790). 



(Figs. 26-28.) 



Syn. Heterakis maculosa (Rud., 1802), Schneider, 1866. 



Specimens which we assign to this species were collected from the Bengal green 

 pigeon (Crocopus phoenicopterus) on three occasions, and from Phlogoenas luzonica and 

 other pigeons. Some difficulty was at first experienced in definitely determining these 

 specimens, owing to the variations not infrequently encountered in the position and 



26 



28 



Figs. 26, 27, 28. — Ascaridia columbae. Tails of three males, in ventral view, to show variation in 

 papillae. 



number of the caudal papillae of the male. Actually the typical number of papillae 

 is 14 pairs, which is the number given by von Linstow (1901 a), but the figure of this 

 author is rather too diagrammatic to show clearly their arrangement. 



There are five pairs of distinctly postanal papillae, the third pair of which is 

 rather ventrally placed, while the remainder are lateral. There is an adanal group of 



