1903.] 85 



sternites of the male bear two hairs on each side, while those of the female have 

 four. The seventh tergite in both sexes bears one long and two extremely short 

 apical bristles. The hind femur has vcntrally at its base a tooth, and in addition 

 to this, an internal subventral row of three to five hairs along its entire length, 

 with a solitary external subventral bristle before the apex. The first segment of 

 the mid tarsus is three-fourths the length of the second. Tlie first segment of the 

 hind tarsus is the same length as the second, the long apical hair of this segment 

 reaching to the base of the claw (fig. 4). The fourth segment, however, is more 

 than twice as long as it is broad. 



The throe processes of the claspcr of the male (fig. 13n() are very slender, 

 bearing hairs only at the apex. The 9th sternite is broader than the processes of 

 the clasper, and rounded at its end (fig. 13ft). The plate of the penis is broad and 

 rounded at the apex (fig. 13). The position and number of the hairs of the eighth 

 tergite of the female can best be made out from the figure (fig. 8). The length = 

 1"42 mm. 



A very \argc series of over a hundred specimens o£ this species 

 were secured in February and March, 1901, nearShendi,the hosts being 

 as fo\\QWii:--GerhiJInfi pi/f/nrqifft, 75 specimens; Gerhillus robusftts 

 11 specimens ; Lepus cpfhiopicua, 10 specimens ; Dipodillus Wntersi, 

 2 specimens ; Dipus jnculus, 1 specimen ; Erinaceus cethiopicus, 1 

 specimen ; Arincanthis festicularis, 1 specimen. 



4. — PuLEX cnEOPis, n. sp. 



(Plate I, Figs. 3, 9 ; Plate II, Figs. 12, 19). 



This species is larger than P. nuhicus, the palpus being shorter than the rostrum 

 and not reaching to the end of the coxa. In the male, sternites three to seven in- 

 clusive bear four bristles, while those of the female have five. The hind femur bears in 

 addition to the lateral series of hairs two subventral bristles before the apex (fig. 3). 

 The first segment of the mid tarsus is rather less than two-thirds the length of the se- 

 cond, while that of the hind tarsus is about three-quarters as long again as the second 

 segment. The long apical bristle of the second segment of the hind tarsus reaches to the 

 middle of the fith segment in the $ , and not quite so far in the ? . The fourth segment 

 is as in P. nubicu.i. The eighth sternite bears two long bristles before the end on each 

 side, and numerous short ones besides. The anterior process of the clasper of the 

 male is compressed, being asymmetrical in shape (fig. 12a). The upper or anterior 

 edge is convex, bearing along this edge a number of rather long bristles. The 

 second process is slender, with a few short hairs at its end. The ninth sternite 

 (fig. 12ft) gradually widens towards the apex. The plate of the penis (fig. 19) is 

 curved upwards and pointed at the end. The shape of the eighth tergite in the 

 female can best be made out from the figure (fig. 9). The length = 23 mm. 



A very large series of both sexes of this species was secured near 

 Shendi in February and March, 1901. We also received a single 

 example from Mr. W. E. de Winton, which he took from a spirit 

 specimen of Mus gentilis, taken near Suez on the 17th of October, 



