ROTHSCHILD, SIPIIONArTERA. 5 



Ctenopsyllus aotliiopicus spec. nov. 



PL 1. fig. S. 9. This species is closely allied to C. iintxcult' DUGES (1832), 

 but differs in the following particulars. 



Head. --The head bears three genal spines, the central one being the longest. 

 The genal process is visible above the uppermost spine, having the appearance of a 

 narrow fourth spine. The bristles of the head are arranged as in C. musculi. The 

 third and fourth bristles of the frontal row, counted from the antennal groove, are 

 modified into short, obtuse, spines, the second bristle also being shorter and less 

 pointed than the others, sometimes resembling those two spines. Abdomen. - The 

 abdominal tergites bear two rows of bristles. The first row, however, is represented 

 on segments 4 to 6 by 2 or 3 bristles only, which are placed above the stigma. On 

 the seventh segment the first row is represented by one lateral bristle, the segment 

 bearing, besides, a dorsal bristle. There are 3 apical bristles on the seventh tergite 

 in the <$, the lower bristle situated apart from the upper pair (PL 1 fig. 8), while 

 there are four bristles in the ? placed in two separate pairs. Legs. - - The fourth hind- 

 tarsal segment is somewhat longer than in C. musculi. Modified segments. - - J 1 . 

 The eighth sternite (PL 1 fig. 8, viii. st) is triangular in side-view, the pointed apex 

 being somewhat produced and bearing a number of long bristles. In a ventral view 

 the sternite is deeply sinuate. The obtuse process P of the clasper also bears some 

 long bristles. The movable finger (F) is curved, widening towards its apex and 

 bearing three rather stout bristles at the distal (ventral) edge in the upper half, 

 there being several smaller bristles in the lower half. The ninth sernite (ix. st) is 

 very different from that of C. musculi. The upper portion of the internal (vertical) 

 arm of the ninth sternite is very strongly dilated. The distal portion of the external 

 (horizontal) arm ends in a hook. - ?. The eighth tergite (PL 1 fig. 9) bears a few 

 short hairs above the stigma and a long and a short one below the stigma; the 

 apical edge is rather deeply emarginate and the bristles at and near this edge are 

 much more numerous than in C. musculi. 



A series of both sexes from Kibonoto, 3. July 1905, off M-us hildehrandti. 



List of Siphonaptera hitherto recorded from the Kilimandjaro-Meru district. 



4. Mni'ii/i.fl/tlll S/lil's/i'llfi li'ciTIlsi'll. 11. .u 1 . A' s|i. 



~l. Ci'l-ll/ii/illl/lllIX ilt/'rxtltx IinTllsc'H. 11. S]l. 



0. < '/i'1/ii/ifi/l/iix ,i//ii/)jiicilS KuTllsrn. 11. s]i. 



1. TScMnophaga Inrlnn 

 '2. Derwatophilus 



3. (.'ti'iiuiT/iltiilitu 1'nitix Cn;n>. 



