Notes on Chiastopsylla, Rothsch. 9 
6-7 external lateral bristles in a row; there is one extra spine at 
the edge between the 4th and 5th pairs. The proportions of the 
tarsal joints are— 
1st tarsus ; : 14, MB, IL, WO) BA 
Roel : : WD, BA, WH, Wil, BS. 
BIOL oe : 3 NO), Bie, ZO, 4 Zo, 
In the 3rd tarsus, therefore, C. godfreyi is practically the same as C. 70ss1. 
The apical bristles of the Ist and 2nd hind tarsal joints are very 
long, equal in length, or nearly so, to the three succeeding joints. 
MopirleD SEGMENTS, ¢.—The 8th tergite is small, scale-like and naked, 
but the corresponding sternite is normally developed and bears 
3 bristles on each side. The clasper, besides other hairs or bristles, 
bears 3 strong bristles at the edge, viz. 1 placed dorsally behind the 
middle, while 2 are disposed distally—the more ventral being short 
and stout (see Fig. 1). The “finger” is broader and shorter than 
in C. nume and C. rossi, but the hairs are similar, viz. 3 short ones 
at the apex, and two longer, one below the apex and another about 
the middle. The 9th sternite is broad ventrally, and the edge is 
fringed with hairs. The internal plate of the penis is shorter than 
the manubrium, which, in this species, is long, slender, and down- 
wardly curved. 
LENGTH of g, 1°6 mm. 
Type.—A 4, in the author’s collection, taken by Miss Fanny Ross from 
Arvicanthis pumilio, Pirie Mts., nr. King William’s Town, So. Africa., 
July 1911. 
Remarks on Chiastopsylla.—tI take the opportunity of referring here to 
the male characters of Chiastopsylla. In C. nwme and C. rossi the head is 
produced before the maxillary palpus, and this prolongation meets the 
descending frons in a remarkably acute angle: the 8th sternite is reduced, 
and the 9th sternite bears distally three leaf-like appendages (modified hairs). 
In C. godfrey: the head rises in a gentle curve directly from the base of the 
palpus, and the forehead is furnished with the merest notch ; the 8th sternite 
is entire, and the 9th unadorned. Im all three species the 8th tergite is 
presumably small, and without bristles. Another common feature is the 
division ventrally of the 9th sternite. In C. rossi and C. godfreyi this is 
apparent, and the junction of the halves is sensibly thickened. The fixed 
portion of the clasper, oblong in shape with rounded angles, bears on the 
dorsal edge, besides other hairs or bristles, one stout bristle at or a little 
