DESCRIPTIONS OF GENERA AND SPECIES 565 



XIII-XX. Sjpermidiucal gland pores lying upon a sucJeer-liJce liour-glass-shaped, ventral 

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

 Dorsal pores hegin T/YI. Gizzards in VIII and IX; calciferous glands in XIV, XV, 

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

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

 Fenial setae with fine denticulate ridges on extremity. Spermathecae with a single 

 diverticulum. Hah. — Quilimane, East Africa. 



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

 different in shape. 



(7) Benhamia tenuis, Michaelsen. 

 B. tenuis, MiCHAELSEur, loc. cit., viii, 1891, p. ai. 



Definition. Length, 75 mm.; hreadth, 3I mm.; number of segments, 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. Calciferous glands in 

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

 a single diverticulum. Hah. — 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. 22,5. 



Definition. Length, 46 mm.; breadth, ^-^mm.; number of segments, 138. Skin pigmented 

 dorsally. Clitellum, XIII— XIX C?). Prostomium continued by grooves about half-way 

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

 in V and VI (?). Penial setae with very fine and irregularly bent extremity, not 

 ornamented. Spermathecae with a small narroio diverticulum. Hab. — Togo, Bismaroks- 

 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 J^ mm. Number of segments, 97. Colour {during life), a dirty flesh-colour ; clitellum 

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

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

 paired ; those of posterior segments larger. Dorsal pores commence V/VI. Gizzards 



