1901.] 



OE THE GENUS BENHAMIA.. 



203 



B. itiolensis. B. ccerulea. B. moorei. B. johnstoni. 



Prostomium ProepivheUous. Epicheilous. Epicheilous. Procpicheilous. 



Anterior segonents . Triannulate. Bianniilate. Bianmdate. 



Dorsal pores v.jvi. xii./xiii. v./vi. v./vi. 



Clitellum xiv.-xxii. (?) xiii.-xxHi. xil.-xxiii. 



Seminal gutter ... Straight. Convex inwards. Convex inwards. Convex inwards. 



Gizzards (?) viii. ^ ix. (?). vi., vii. vii., viii. 



Cakiferous glands, xv. smallest. xv. smallest, xv. smallest. xvL smallest. 



Spermathecce No extern, div. No extern, div. Extern, div. Extern, div. 



Penial setm Suddenly Suddenly Gradually Suddenly 



diminish into diminish into diminish into diminish into 



slightly curved slightly curved slightly curved very curved 



hook. hook. hook. hook. 



Erom the above account of its structure I can abstract the 

 following definition of the species which, I may remark, contains 

 certain statements not described in any further detail in the 

 foregoing. 



Eenhamia johnstoni, n. sp. 



Length about 250 mm. ; diameter 15-20 mm. Prostomium rather 

 large, retracted ivitliin mouth-cavity, not prolonged over buccal segment, 

 hut ivith slight median 'projection. Dorsal pores commence v.jvi. 

 Clitellum x'l.-xxiii. Male pores on deep depression ; seminal gutter 

 slightly convex inwards. Integument surrounding male pores 

 rnarhedly tesselate. Gizzards in vii., viii. ; calciferous glands xv,, 

 !xvi., xvii., opening separately .into oesophagus ; middle pair the 

 smallest. No septa very thieve. Dorsal vessel single ; last hearts in 

 xii. Spermiducal glands lie in two masses in two segments each. 

 Penial setce, one to each gland, slightly swollen before strongly hooked 

 tip, ivhich is bifid at extremity, marlfed throughout with fine rings. 

 Spermathecoi with strong muscular duct longer than poiich, into the 

 duct opens a rosette of five or six diverticula. 



Hab. Huwenzori, 6500 ft. 



(3) Benhamia mollis, n. sp. 



In the above table of the specific distinctions between the species 

 B. johnstoni, B. moorei, B. itiolensis, and B. coerulea, I have not in- 

 cluded the characters of a second species of Benhamia placed in 

 my hands by Mr. Moore. This worm is of a very dark brown 

 colour and is very soft. I naturally put down this softening to 

 inferior preservation ; but Mr. Moore informs me that the living 

 worm was exceeding soft and that the specimen which I have ex- 

 amined is in reality as well preserved as is the type of B. moorei. 

 I have not compared its characters in a tabular form with those 



