52 THOMPSON YATES AND JOHNSTON LABORATORIES REPORT 
first Segment 
Second Segment 
Third Segment 
Fourth Segment 
Fifth Segment 
Mid tarsus 
8 
9 
6 
H 
Hind tarsus 
18 
I 2 
8 
7 
16 
Modified Segments. — The eighth sternite is less deeply sinuate ventrally at the 
apex than in E. gallinaceus, there being also a few more bristles in the present species. 
Length : $, i'7 mm. 
We have one $, collected by Mr. C. H. B. Grant at Klipfontein, Namaqualand, 
off a bat. 
5. Echidnophaga gallinaceus 
(PI. I, Fig. i ; PI. II, Fig. 14 ; PI. Ill, Fig. 21 ; PI. IV, Fig. 27) 
Sarcopsyllus gallinaceus Westwoqd, Ent. Mo. Mag. XI. p. 246 (1875) (Ceylon, oft" Chicken) ; 
Ritsema, Versl. Ttjdschr. Ent. XIX. p. 76 (1876) {8. gall, probably a Hectopsylla) . 
Sarcopsyl/a gallinacea, Taschenberg, Die Flohe p. 55. n. 2. t. i. fig. 5-5.1 (1880). 
Packard, Insect LifeVIl. p. 23. fig. 3, 9 ( 1 894) ; Hartz. ibid. p. 280 (1894) (on horses). 
Wagner, Hor, Soc. Ent. Ross. XXVIII. p. 440. fig. 1,2 (1894). 
Baker, Canad. Ent. XXVII. p. 20 ( 1 895). 
Osborn, Div. Ent. Dept. Agric, Bull. V. p. 144. fig. 76, 77 (1896). 
Blanch., Bull. Soc, Nat. Arcllm. France XLIV. p. 210. fig. $, ? (1897). 
Enderl., Zool. Jahrb. XIV . 1. Abth. Syst. p. 552. t. 34. fig. 6 (1901). 
Pulex spec. Johnson, Proc. Ent. Soc. Washingt. I. p. 59 (1890). 
Pu/ex pullulorum id., l.c. I. p. 203 (1890) (habits). 
Argopsylla gallinacea Endfrlein, Deutsche Tie/see — Exp. iii. 7. p. 263. fig. 6 (1903). 
Xestopsylla gallinacea, Baker, Proc. U.S. Nat. Mus. XXVIII. p. 375, 434 (1904). 
Although both sexes of this species have several times been figured, some of 
the essential distinguishing characters have been overlooked. The following short 
description of both sexes supplements these deficiencies to some extent : — 
Head. — The frons is strongly angulate in the $ before the middle, and rotundate- 
angulate in the ? (PI. I, Fig. i, $). The occiput is short, measuring dorsally one-half 
or less of the frons. There are two long bristles above the antennal groove, the 
anterior one standing behind the base of the antennal groove, and the posterior one 
near the hinder edge of the occiput. This hinder edge is in the $ produced laterally 
in the middle into a rounded lobe (PI. I, Fig. i). The mandibles are more than 
twice the width of the maxillary palpus near the base. The first segment of the 
maxillary palpus is as long as the last in the f, and longer than the last in the The 
ventral genal process is slightly curved backwards. The first segment of the club of 
the antenna is large, oblique in position, covering the greater part of the next three 
segments. 
