DESCRIPTIONS OF GENERA AND SPECIES 565 



XIII-XX. Spermidncal gland pore* lying upon a sucker-like hour-glass-shaped ventral 

 area. Prostomium, triangular in form, imbedded in first segment. Setae strictly paired. 

 Dorsal pores begin T/VI. Gizzards in VII L and IX; calciferous glands in XIV, XV, 

 XVI ; intestine with typhlosole. Septa, X/XI-XIIl/XIV are specially thickened. Sperm- 

 saes in XI and XII ; free masses of developing sperm also found in X, XI, XII. 

 Penial setae with, fine denticulate ridges on extremity. Spermathecae with a single 

 diverticulum. Hob. Quilimane, East Africa. 



This species comes nearest to B. wliyiei, but it is larger and the penial setae are 

 different in shape. 



(7) Bcuhamia tenuis, MICHAELSEN. 

 B. tenuis, MICHAELSEN, loc. cit., viii, 1891, p. 21. 



Definition. Length, 75 mm. ; breadth, 3^ mm.; number of ssgments, 2,62. Clitellum, 

 XIV XIX (?). Prostomium, small, not continued by grooves on to buccal segment. Setae 

 strictly paired. Dorsal pores present; begin about XIII/XIV. Calciferols glands in 

 XIP, XV, XVI (?). Penial setae with extremity denticulate. Spermathecae with 

 a single diverticulum. Hab. Barombi, Cameroons, West Africa. 



This species is only briefly described by Dr. MICHAELSEN, and it is not certain 

 whether it be really different from B. crassa. 



(8) Benhamia intermedia, MICHAELSEN. 

 B. intermedia, MICHAELSEN, Arch. f. Nat., 1891, p. 225. 



Definition. Length, 46mm.; breadth, ^-^mm.; number of segments, 128. Skin pigmented 

 dorsally. Clitellum, XIII XIX (?). Prostomium continued by gn oves about half-way 

 along the buccal segment. Setae strictly paired. Dorsal pores commence I/ VI. Gizzards 

 in V and I' I C?). Penial setae with very fine and irregularly bent extremity, not 

 ornamented. Spermathecae with a small narrow (literttculum. Hab. Togo, Bismarcks- 

 burg, Adeli. 



(9) Benhamia bolavi, MICHAELSEN. 

 B. Bolavi, MICHAELSEN, JB. Hamb. wiss., Anst. viii, 1891, p. 9. 



Definition. Length, 60 mm.; breadth, i mm. during life. After preservation, 40 mm. 

 by if mm. Number of segments, 97. Colour (during life), a dirty flesh-colour ; clitellum 

 yellowish or pale pink. Clitellum, Xllf-XIX. Oviducal pore single and median upon 

 XIP. Prostomium without prolongation by grooves on to buccal segment. Setae strictly 

 paired; those of posterior xagiueiittt larger. Dorsal pores commence J'/I'I. Gizzards 



