On a new Species of JMcjiibracidix; from Uganda, 4G3 



0*4 mm. ill lenoth. Tlieie is a pair of caudal papillie at 

 0*1 mm. from the (ip. The vulva is situated at 16 mm. 

 from the auterior end in a specimen 38*7 mm. 1om<^j thus 

 dividing the body, roughly, in the proportion of 2 : 3. The 

 vagina is long, narrow, and museuhir, running posteriorly, 

 with an irregular course, from the vulva. The long unpaired 

 portion of the uterus and its two relatively short branches 

 continue in a posterior direction, the latter parallel to each 

 other. The ovarian tubes turn forward, still parallel, at a 

 short distance behind their junction with the uterine branches 

 (i. e., at a point 3-6 mm. from the posterior end of the worm). 

 They continue anteriorly to a point somewhat in front of the 

 vulva, where they bend posteriorly again. The ovaries, just 

 behind the vulva, form a close series of transverse loops 

 ventrally to the intestine, and terminate at about 1 mm. 

 behind the vulva. The eo-^s ^re oval, with thin shells, 

 granulated externally and measuring about 0*075 X 0*017 mm. 

 Their contents are unsegmented at the time of laying. 



The following brief diagnosis will serve, for the present, 

 for both the genus and the species : — 



A jS' IS AKUVJn: resembling Ooutrac^ecum in the sh'ucture of 

 the alimentary canal, but differing from it in having no inter- 

 labia. Each lip icith a pair of large conical teeth on its inner 

 surface. A collar-like fold of cuticle surrounding the neckj 

 and between this and the bases of the lips an art'a covered with, 

 small spines. Spicules equal, short, and slender. Vulva in 

 anterior half of body. Parasitic in the alimentary canal of 

 semiaquatic carnivorous land-mammals. 



Type-material in the British Museum (Natural Ilistory). 



XLV. — A new Species of ^lQ\\\\)Y-<x(inVxi [Q'dwU-oiiwx) from 

 Uganda. By \V. E. China, B.A. 



(Piiblisbed by permission of the Trustees of the British Museum.) 



Genus IIamma. 



Buckton, Trans. Linn. See. Loud., Zool. (2) toI. ix. p. 330, pi. xxi. 

 fiix. 3 (1906) ; Distant, Ami. & Mag. Nat. Hist. (8) vol. xvii. p. 157, 

 tio-. (1910). 



Hamma mabirensis, sp. n. 



Head shiny black, strongly punctate, ocelli about as far 

 from one another as from the eyes. Pronotum shiny black, 

 strongly })unctate, with the metopidium somewhat tuber- 

 Gulate, the humeral angles more or less prominent and dentate 



