K. Jordan and N. C. Rothschild 
51 
bears 2 bristles, there being only one in the allied species. On the 
epimerum of the metathorax there are two rows of bristles, the first 
containing from 7 to 10 and the second from 6 to 8: the first bristle 
of the anterior row, or of both rows, being dorsal to the stigma, which is 
not the case in the other species of the present group of Loemopsylla. 
Abdomen. The numbers of bristles on the tergites are as follows 
(on both sides together):—i. (two rows) 9 to 11 and 9; ii. 22 to 28; 
iii. 23 to 28 : iv. 23 to 28; v. 22 to 26; vi. 20 to 27; vii. 17 to 22, 
the £ usually having a few bristles less than the $ . The basal sternite 
bears in both sexes two ventral pairs of bristles, the one pair standing 
in front of the other; in the $ there are, moreover, 2 lateral bristles 
on each side, these bristles being replaced in the </ by minute hairs. 
None of the allied species have more than one ventral pair of bristles. 
On the following sternites the bristles are as follows :—iii. </ 10, $ 14 or 
15; iv. 10, i 14; v. ^ 10, ? 16; vi. ^ 10, $ 15 or 16; vii. 10, 
$ 15 or 16, there being in front of the row of the seventh segment a 
few minute hairs in and 7 to 12 bristles in the $ on both sides 
together. The dorsal subapical bristle of the seventh tergite is shorter 
than the second hindtarsal segment. 
Legs. The hindfemur bears a row of 5 or 6 bristles on the inside, 
and has 2 subapical bristles on the outside. 
Modified segments. </. The bristles on the eighth sternite 
are rather more numerous than in L. clieopis. The clasper bears 
two slender processes (PI. Y, fig. 3). The upper (= outer) process has 
3 or 4 bristles at the tip and 3 more between the apex and the 
centre along the upper margin. The ninth sternite resembles that of 
L. cheopis, bearing a number of hairs at the apex and a very few 
additional ones further proximad and near the ventral margin. The 
internal plate of the penis (Pen.-Pl.) is slender, its apex being curved 
upwards and acuminate.— $. The bristles on the eighth tergite are 
very numerous, the long bristles situated on the lateral surface being 
accompanied in the present species by an unusually large number of 
shorter bristles. 
The junior author found a number of specimens of both sexes in 
Egypt and the Sudan on various hosts, as detailed below: 
Nakheila, Atbara R., February 1904, off Gerbillus robustus. 
Shereik, N. Sudan, January 1904, off Gerbillus pygargus. 
Shendi, Sudan, March 1901, off Arvicantlns testicularis and Gerbillus 
tatera. 
Kerma, Dongola, February 1904, off Gerbillus pygargus. 
4—2 
