16 
The Non-Combed Eyed Siphonaptera 
extending to vertex, the internal incrassation from the groove upwards 
being vestigial or absent. Eye round. One bristle beneath the eye, a 
second at the oral edge, and a third, often small, in front of the eye. 
Labial palpus consisting of four segments. 
Thorax. One row of bristles on each tergite. On mesonotum no 
spines between the row of bristles and the apical edge. No small teeth 
at the edge of the metanotum. Epimerum of the mesothorax oblique, 
not completely covering the stigma, the suture between epimerum and 
sternum distinct. Prosterum widest behind (PI. I). 
Abdomen. Convex above and below in both sexes. No small teeth 
at the apical edges of the tergites, except the first, which bears sometimes 
two teeth. Seventh tergite with one long apical bristle either on a 
tubei’de, placed away from the apical edge (PI. VI, figs. 1—4), or, as only 
in </ of L. scopulifer, on a long cone (PI. V, fig. 1). 
Legs. Internal rod-like incrassation of the midcoxa forked near the 
base. Hindcoxa always with comb of small spines on the inner side 
(PI. I). Mid- and hind-femora with a row of bristles on the inner side. 
First fore- and midtarsal segment shorter than the second (PI. Ill, 
figs. 4—6, 8). 
Modified segments. </. Clasper with two or three small processes; 
manubrium narrow ; upper internal portion of the ninth sternite not 
very sharply defined (PI. IV, figs. 6—12).— $. The stylet bearing, 
besides the long apical bristle, a short bristle situated in a notch before 
the apex. 
Distribution. Africa and Central Asia, one species ( cheopis ) 
apparently in all warm countries, being distributed with rats. 
Type of name : cheopis Rothsch. 
Many of the species of this genus differ in size, but they all conform 
to one type in outline. The thorax being short and the abdomen convex 
above and below, the species of Loemopsylla are compact in aspect, 
resembling in this respect several other Pulicidae, for instance, Spilo- 
psyllus cuniculi, Rliopalopsyllus australis, Ctenocephalus erinacei, and 
others. The characters however by which all the species of Loemopsylla 
are distinguished from other fleas are sufficiently trenchant, we think, to 
render it impossible not to recognise which species belong to this genus 
and which do not. The most obvious of these distinguishing characters 
of Loemopsylla are the four-segmented labial palpus, the closed antennal 
groove, the anteriorly solid antennal club, the division of the pleui’a of 
the mesosternite by a suture into a sternal and a rneral sclerite, the 
position of the dorsal apical bristle of the seventh abdominal tergite remote 
