904 



MR. G. M. ViSVERS ON NEMATODA FROM MAMMALS 



to, and gives a brief description of the worm, with iigures 

 copied from the oj-iginal paper by Alessandrini. The only 

 measurements given ai-e the size of the body. In 1916, Clayton 

 Lane (6) suggested that A. jyluriclentatum might not be a valid 

 species ; he also suggested that if Alessandrini had not made an 

 error and the species was valid, it should be made the type of a 

 new genus. 



Text-fig. 1. 



Text-fig. 2. 



200fJ. 



200fj. 



Ancylostoma pluridentatum (Aless.). 

 Mouth capsule. Lateral view. Moutli capsule, 



Dorsal view. 



My material was collected from the small intestine of J^elis 

 tigris, Malay States. 



I have compared the general measurements, mouth capsule, 

 and bursa with the original description and figures given 

 by Alessandrini, and find that they agree in all but three 

 points : — 



(1) The length of the body. Measurements given by Ales- 

 sandrini : Male 6-8 mm., female 6'5-9 mm. 

 Measurements of my material from Felis tigris : 

 Male 8*5-9 mm., female 9-10"5 mm. 



