NEW SPECIES OP SIPHONAPTERA FROM EGYPT. 6 



female. The hind tibia of the present species bears one, two, or three 

 pairs of hairs at the ventral (anterior) edge, besides the ordinary sub- 

 apical pair of bristles. The fourth segment of the fore tarsus is not 

 as broad as in mycermi, being only one-third broader than it is long. 

 The fourth segment of the hind tarsus is decidedly longer than in 

 mycermi, being nearly twice as long as it is broad. The second hind 

 tarsal segment is in the present species longer than in mycermi, the 

 proportions between the first and second segments being in mycerini 

 29 : 20, while in the present species they are 28 : 23. The longest dorsal 

 apical bristle of the first hind tarsal segment does not reach the third 

 segment, and the two long apical dorsal bristles of the second segment 

 are also somewhat shorter than in mycerini. In the male the clasper 

 (fig. 3) has three processes as in mycerini, but the upper process is 

 larger, being truncate, and bearing a number of rather stout bristles 

 at the apical margin, and a belt of bristles in the middle, as shown in 

 the figure. The conical hairy structure at the end of the penis is 

 much longer than in mycerini. The eighth tergite of the female 

 resembles that of mycerini. In the type (male) the eighth abdominal 

 sternite bears on each side in the middle several hairs instead of one 

 only. Length : $ , 1-5 mm. ; $ , 2-2-2 mm. 



Four males and four females were secured in March, 1903, at 

 Bir Victoria, from Pachyuromys dupresi natronensis, and five 

 females from Gerhillus tarahuli. 



3. PULEX PYRAMIDIS, n. Sp. 



This species is very closely allied to P. cleopatra. In size it is much 

 larger, and the comb on the hind coxa consists of fourteen spines. The 

 abdominal sternites of the female bear five hairs only, and the long 

 apical bristle of the second segment of the hind tarsus reaches only a 

 little beyond the middle of the fifth segment. 



A single female specimen was secured at Bir Victoria on the 

 9th March, 1903, from Jaciilus jaculus. 



4. Ceratophyllus henleyi,* n. sp. (Plate L, fig. 5 ; Plate XL, 



figs. 6, 7, 8.) 



The head is similar in shape to that of C. fasciatus. There is a 

 row of three long bristles in front of the eye, but no long bristles 

 further forward. On the hinder part of the head there are three 

 round pale spots, which are similar to the pale spots situated along the 

 frontal edge of the head, the first being subdorsal, and the other two 

 post-median, and lateral. Below the lower spot there is one single 

 long hair, there being no other long hairs on the side on the posterior 

 part of the head, apart from some along the hinder edge. The pro- 

 notal comb consists of nineteen or twenty teeth. The mesonotum 

 bears on each side five to seven long thin hair-like spines, which are 

 situated between the row of long bristles and the apex. The epimerum 

 of the mesonotum is provided with a bristle near the anterior ventral 

 corner, another further upwards before the middle, a third on a level 



* This species is named in honour of the Hon. Francis E. Henley. 



B 2 



