554 



DR. ROBERT T. LEIPER ON NEW 



the oesophageal musculature supports and encloses the buccal 

 Ciivity the muscular tissue is only 0'006 mm. in thickness, but in 

 the postei'ior third the oesophageal musculature attains a thickness 

 of 0'13 mm. 



Text-fifi-. 143. 



Tracliypliarynx nigerice. 

 AiittTior extremity showing buccal capsule. 



The females were full of eggs, and although the details of 

 the posterior end of the body could not be made out exactly, the 

 vulva appeared to be situated a short distance in front of the 

 anus, which in turn was situated almost at the posterior end of 

 the body. (Collected by J. J. Simpson, Esq.) 



Family SpiropteridjE. 



SpiROPTERA UGANDA, Sp. n. 



Host : Monkey. Locality : Uganda, 



In the intestine of a Monkey a fragment of a male worm was 

 found. The anterior portion, having been cut off in the process 

 of opening the gut, was unfortunately lost. The essential points 

 are, however, shown in text-fig. 144, which illustrates the 

 posterior end, showing the papillae and other specific characters. 

 The papillae are large, and arr-anged as four pairs of pedunculated 

 preanals and five pairs of postanals, three of these being pedun- 



