DESCRIPTIONS OF GENERA AND SPECIES 569 



(17) Benhamia pallida, MICHAELSEN. 

 B. pallida, MICHAELSEN, loc. cit., p. 258. 



Definition. Length, 25 mm. Spermiducal gland slender ; penial setae present and of two 

 kinds ; the larger are furnished at extremity with a few denticles which are occasionally 

 bifid ; the other setae are smooth. Hab. Togo, Bismarcksburg, West Africa. 

 1 This species can hardly be distinguished from B. bolavi ; the only difference 

 appears to be in the presence upon the free end of the penial setae of one particularly 

 large denticulation, illustrated by MICHAELSEN in a woodcut (fig. B, p. 259). 



(18) Benhamia gracilis, MICHAELSEN. 

 B. gracilis, MICHAELSEN, loc. cit., p. 258. 



Definition. Length, 60 mm. ; breadth, $ mm. ; number of segments, 145. Clitellum saddle- 

 shaped, XIH-XX. Ovidncal pore single and median just behind intersegmental furrow, 

 XIII/XIV. Dorsal pores commence VjVI (?). Six median papillae on furrows 

 IX/X-XIIT/XIF and XXIII/XXIV. Penial setae of two kinds; one, the larger, with 

 a few broad bifid dentiailations at the extremity ; the other, the smaller, with very few 

 simple denticnlations. Hab. Togo. 



(19) Benhamia malayana, HOEST. 

 B. malayana, HOEST, Zool. Ergebn. Ost-Indien, ii, p. 35. 



Definition. Length, 20-30 mm. ; number of segments, 95. Skin without any pigmentation. 

 Clitellum, XIII-XX, complete. Prostomimn continued on to buccal segment. First 

 dorsal pore between segments V/VI or VI/VU. Spermathecae with a single diverticulum. 

 Penial setae of two kinds ; the longer terminate in four spinelets, the shorter has a 

 spoon-lilce extremity. Ha't. Ylores ; Sumatra; Celebes. 



HORST correctly remarks that this species shows considerable resemblances to 

 B. bolavi ; it differs, however, in its stouter build, its complete clitellum, and in 

 having two instead of only one oviducal pore. The latter character also distinguishes 

 the present species from B. gracilis. B. pallida is another species which comes 

 very near to the present ; the smooth setae of that form, however, are not stated to 

 have a spoon-like swollen extremity. 



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