K. Jordan and N. C. Rothschild 
61 
The second hindtarsal segment bears two long apical bristles on the 
posterior side, the longer one extending nearly to the apex of the fifth 
segment, while the other bristle only reaches to the centre of the 
segment. The fifth segment is only twice as long as it is broad near 
the apex, being but slightly dilated distally. There are in both sexes 
2 ventral apical bristles on this segment. 
Modified segments. <£. These segments (PI. VII, fig. 2) closely 
resemble those of L. regis. The eighth sternite bears 3 bristles on 
each side, one being lateral and two ventral, the second ventral bristle 
being placed close to the apex of the segment. The clasper has 
3 processes. The first process is slightly widened distally and provided 
with an apical row of bristles; the second process is very slender, while 
the third is short and broad. The ninth sternite has a few minute 
hairs at and near the apex and two longer ones on the side.— $. The 
eighth tergit.e has on the outside an apical row of 7 or 8 bristles, and 
3 or 4 bristles on the lateral surface, while there is an apical row of 
7 or 8 bristles on the inside. The stylet is about twice as long as it is 
broad near the base. The anal sternite is truncate, the apex being 
narrower (in side-view) than in L. erilli. 
Length. l - 5mm., $ 2 mm. 
This species is known to us from Bir Victoria, Natron Valley, Lower 
Egypt, where the junior author took a series of it off Gerbillus tarabuli 
and Pachyuromys duprasi natronensis, in March 1903. 
(20) Loemopsylla gerbilli Wagn. (1903). 
(PI. Ill, fig. 1; VII, fig. 1.) 
Pulex pallidus Wagner (1894, p. 440, non Taschenberg 1880, err. ident.). 
Pulexgerbilli Wagner (1903, p. 309, Transcaspia, off Gerbillus ); Baker (1905a, p. 141). 
Very close to L. mycerini. The insect differs from mycerini 
especially in the bristles of the tibiae and tarsi being considei’ably 
longer. The first hindtarsal segment, for instance, bears 5 apical 
bristles which reach to the apex of the second segment or beyond 
(PI. Ill, fig. 1), and the second segment has 3 very long apical bristles, 
one extending beyond the apex of the fifth segment, another reaching 
to the apex and the third to the centre of the fifth segment. The tarsi, 
too, are much longer. The two free processes of the clasper (J 1 ), 
moreover, are separated from each other (PI. VII, fig. 1), and the third 
process is longer than in mycerini. The eighth sternite of the £ bears 
a venti'al row of 4 bristles on each side. 
