88 
Psyche 
[June- Sept. 
by its pale colour and dark markings on the thorax and 
venter between the fore and mid coxae; also by the short 
thick-set setae on the thorax and pale scutellum.” 
8. Hippobosca struthionis Janson. — I have seen the 
type from Mt. Stewart, Cape Province, at the British 
Museum. 
Additional Specimens Examined. — Kenya Colony : Simba, 
3,350 ft. ; Makumbu ; Ukamba ; Machakos ; Athi Plains, off 
horse; Merifano (McArthur) ; Taveta, off dog (C. W. Wood- 
house). — Tanganyika Territory: Tabora, off ostrich (J. 
Rodhain) ; north of Tarengere River (W. A. Lamborn) ; 
Sanga River, Muruangani. — Transvaal : Pretoria ; Deel- 
fontein; near Limpopo River, N. Transvaal, off ostrich 
(R. A. Cooley). — Cape Province: Philipsdale, Worcester; 
Hopetown; Campbell; Cradock (Miss J. Brincker) ; Erreha 
(E. Gough). — Bechuanaland : Ghanzi, Ngamiland (J. 
Maurice). — South West Africa: Otavi (J. Ogilvie) ; Aus 
(R. E. Turner) ; Greater Spitzkopje near Usakos, Damara- 
land (de Schauensee). 
This species is unusual in that the preapical bristles of the 
scutellum are crowded together in two widely separated 
groups, placed at the extreme sides ; also in that the bristles 
are more numerous in the male than in the female. In 23 
specimens (13 $ and 10 a ) examined, from 4 localities, the 
bristles varied in the females from 4 to 12, 9 of the 13 $ 
having from 5 to 7 ; in the males, from 8 to 15, 7 of the 10 a 
having from 9 to 12. The grouping was as follows: with 4 
bristles : 2 ( $ ) ; 5b. : 3 ( $ ) ; 6b, : 3 ( $ ) ; 7b. : 3 ( $ ) ; 
8b.: 1 ( a ) ; 9b.: 4 (1 2 , 3 a ) ; 11b.: 2 ( a ) ; 12b.: 3 
(15,2 a ) ; l'3b. : 1(a); 14b.: 1(a); 15b.: 1(a). 
The bristles were divided into even groups in 8 specimens, 
unevenly in 15, the uneven groupings observed being 2 + 3, 
3 + 4, 4 — j— 5, 5 — |— 6, 5 — f— 7, 6 -|— 7, and 7 —1— 8. 
The structure of the abdomen of H. struthionis is similar 
to that of H. variegata in both sexes. The species has not 
been figured adequately. 
The parameres of the male genitalia are slender, rod-like, 
gradually narrowed from the base to the pointed, sharp 
apex, and very similar to those of H. equina. 
9. Hippobosca camelina Leach. — I have seen Leach’s 
type, at the British Museum. 
