7 
214 MR. F. E. BEDDARD ON [ Mar. 3, 
was collected by Mr. Stuart Betton, at Lagari, British Central 
Africa, 
The prostomium is continued by grooves over about half of the 
buccal segment. 
The sete are wider apart in the case of the ventral couples than 
in the case of the lateral. 
The limits of the clitellum are a little obscure; it appears to 
embrace segments xiv.—xvii. inclusive. 
The chief, indeed practically the only, reason which leads me 
to separate this Hudrilid generically, is the condition of the repro- 
ductive apertures. The rule in the family is that the apertures 
of the sperm-duct and of the spermathece are unpaired and 
median in position. 
Text-fig. 36. 
ste 
Ventral surface of Bettonia lagariensis. §, spermathecal pores; g, male pore. 
There are, however, a few exceptions, such as Hudrilus itself, 
and an apparently close ally of the present genus, viz. H’mznoscolex. 
Betionia offers a third arrangement of the reproductive pores. 
4 
