460 ^r.-. F. E. BetUlarcl on 



'V\\c ni:ilo jiorcs li(^ at the bottom of a doop siicker-like 

 depression, which iiieliules one segment in front of and one 

 behind those pores. Its eontoiir is that of an elongated ovi\I, 

 the sides being straii^ht and paralhd in the middle. A con- 

 tinuous furrow lyinj? at the bottom of the depression separates 

 the ojenital area from the vertical wall which bounds it. The 

 colour of the genital area is precisely the same as that of the 

 clitellum. 



The seminal grooves connecting the pores of the xviitli und 

 xixth segments on each side are quite straight. In the middle, 

 of this area is another perfectly straight furrow dividing it 

 into right and left halves. 



The internal structure of this Benhamta shows no no'o- 

 worthy divergences from tho typical structure of the genus, 

 though there are naturally details which allow of its b.dng 

 distinguished from its allies. 



The neplnidia do not form only " einen zottigen Besatz 

 an der Innenseite der Leibeswand," as Miehaelsen writes of 

 the nearly allied Benhamia sj/lveslris *. Tliey are arranged, 

 at any rate, behind the spcrmiducal glands, in seven or eight 

 definite rows on either side of the nerve-cord, ns in such a 

 form as Benhamia holavi (= B. octonephra). This disposition 

 of tho neplnidia is very characteristic of certain s])ecies, and 

 is probably therefore a valid mark of distinction between the 

 Benhamia which I describe here as B. tanganyikcc and 

 B. syJveslris. 



None of the septa are especially thickened. Those separating 

 pcgments xi to xv are rather more emphasized tlian the 

 ful lowing. 



The two large gizzards appear to lie in segments viii and ix. 



The calciferous glands are unquestionably in segments xv, 

 xvi, and xvii. The first two pairs are kidney-shaped and 

 flattened from side to side; the last pair, those o/ segment xvii, 

 are |ilumper in form but not quite so large. The glands of 

 the fifteenth segment are larger than those of the sixteenth. 

 1 he intestine has a typhlosole. The last pair of hearts aie in 

 segment xii and the dorsal vessel is single. 



The organs of reproduction ot this species are very noticeable, 

 on account of the large size of the spermatheca and the 

 spermidueal glands. 



The sperm-sacs, on the other hand, are not quite so con- 

 sjticuous. I can recognize, in fact, only one well-developed 

 pair, which lie in segment ix and are attached to the j)osteric)r 

 of the sej^ta bounding that segment. They are rounded and 



• ' Die Kegeuwurmer Ost-Afrikas,' 1896, p. 28. 



