78 [April, 



The mesonotum is densely covered wilh hairs, besides hearing the usual postmcdian 

 row of long ones. On the pleural sclerite of the mesonotuin there are about 

 14 bristles. The mctaiiotum has three rows of bristles. Tho metathoraeical 

 epimerum has numerous bristles arranged in four irregular rows. 



Abdomen. — There is a comb of short apical spines on tergites 1 to 5, the 

 spines standing close together and numbering over 20 on the first tergite, while 

 they are farther apart and fewer in number on the other segments. The seventh 

 tergite has three long and strong apical bristles. The sternites of segments 2 to 6 

 have a row of four bristles, besides some minute hairs, the second bristle from above 

 being the longest. 



Legs. — The hind coxa has four bristles posteriorly at the apex. The foro femur 

 bears two bristles ventrally near the apex, while the mid and hind femora bear 

 three in that place. The hind tibia lias on the outer surface two rows of bristles 

 near the stout dorsal bristles, there being also numerous short hairs on the ventral 

 (= anterior) surface of this tibia. On the fifth tarsal segment there are four lateral 

 bristles and a subbasal ventral pair standing in between the first lateral pair. The 

 first segment of the mid and hind tai-si is longer than the second and third segments 

 together. The longest apical bristle of the second hind tarsal segment reaches 

 nearly to the middle of the fifth segment. The proportions of the mid and hind 

 tarsal segments are as follows : — 



1st. 2nd. 3rd. 4th. 5th. 



Mid tarsus 35 ... 19 ... 11 ... 8 ... 18 



Hind tarsus 60 ... 38 ... 19 ... 11 ... 19 



Modified segments.— £ . The eighth sternite (PI. I, fig. 3, VIII. st) is large 

 and bears ventrally a number of bristles, of which the most distal one is much the 

 longest. The process (P) of the clasper is sinuate, each angle bearing a bristle, a 

 very long bristle, moreover, standing dorsally of the process. The movable 

 process (F) is widest in the centre, the apex being curved ventrad. There are a 

 small number of minute hairs at the dorsal edge of this " finger," as well as on the 

 outer surface, several longer hairs standing close together in the centre of the dorsal 

 edge. Ventrally there is a long and a short bristle standing on the inner surface 

 close to the edge. The ninth sternite (PL I, fig. 3, IX.st) is slender and bears 

 at the incrassate apex two stout spine-like bristles on each side, there being two 

 longer bristles further proximad at the ventral edge. Length 3d mm. 



One <$ from the Ruweuzori, 13,000 ft., off a mouse. 



4. — Ctenopsyllus hihsutus, spec. nov. (PI. I, fig. 4). 

 A large and hairy species bearing three vestigial lateral combs on 

 the abdomen. 



Head. — There are five spines at the edge of the antennal groove (PI. I, 

 "g- 4), the fourth being the longest and lying flat on the large genal process ; the 

 fifth spine is narrow and almost coalescent with the lower oral lobe. The rostrum 

 neai-ly reaches to the apex of the fore coxa. 



Thorax.— The pronotum bears three rows of bristles and a comb of 42 teeth. 

 The meso- and metanolum have each four rows of bristles, there being also four 

 more or less irregular rows on the epimerum of the metathorax. 



