1054 MR. 11. J. ORTLEPP ON THE 



slightly separated from each other, the middle one being nearer 

 the anus. The first two pairs of post-anal ventral papillfe are 

 small, and are situated close together, one pair behind the other, 

 in the immediate vicinity of the anus ; pairs 3 and 4 are 

 approximated to each other, a.nd are situated at the junction of 

 the 1st and 2nd tail thirds ; the 4th pair is situated nearer the 

 ventral mid-line than the 3rd pair. The last pair is found at 

 the junction of the posterior tail thirds. 



Fhysaloptera mordens Leiper. 

 Caudal extremity of male. 



The spicules are very unequal, the left being long and slender 

 and about eleven times as long as the right ; it is filiform, tapers 

 to an acute point, and appears to vary in length from 4*6 to 

 5-5 mm., Avith a breadth of 35 /j,. The right spicule is shoi't and 

 stout, with its apex tapering to form a long and thin point ; it is 

 470 to 500 /A long by 50 to 55 /x. broad at its base. 



Hosts : Somo sa2yiens. Stomach and intestine. Africa. 



"Monkeys." Stomach. Nyasaland. 



My observations difier from Leiper's description, firstly, in the 

 number of uteri, of Avhich he records only two ; I was able to 



