
ENTOMOLOGY 971 
(between Penge and Irumu), February 27, 1914; Lubutu, January 29, 1915. 
Nala (J. Rodhain). Coquilhatville (J. De Riemaecker). Kongolo, December 
1923 (Mich. Bequaert). Stanleyville, eleven females and two males, as prey of 
Bembix bequaerti Arnold var. dira Arnold (H. Lang and J. P. Chapin). Loja 
River at Ingerosa (near Irumu), attacking elephant, May 24, 1927 (R. P. Strong). 
In the Congo Museum, Tervueren, there are also specimens from Kindu (Averza) ; 
Api (Laplume); Ponthierville (Prince Albert of Belgium); between Kwesi and 
Kalo (L. Bayer); Bambili (Rodhain); Mobwasa (de Giorgi). 
This species is a very vicious biter. It was extremely common in the forest of 
the mid-Semliki Valley, between Lesse and old Beni, in July 1914, its abundance 
and tenacity rendering it very troublesome to white men and native carriers alike. 
Hi. strigipenne is readily recognizable by the color of the wings which are uni- 
formly infuseated, though darker in the distal half especially toward the anterior 
margin; there is a more or less hyaline transverse mark just before the stigma, 
usually filling the extreme base of the first submarginal and first posterior cells; 
a narrow transverse hyaline streak just before the tip of the wing; and, between 
these two, a somewhat wide, more or less distinct hyaline mark, descending from 
the costa to the fork of the third longitudinal vein, often interrupted or bifurcate 
below. In addition, the body is black and shiny; the palpi much swollen; the 
tibiae and basal half of middle and hind tarsi white, the apical third of the fore 
tibiae brownish black. The presence of the preapical hyaline streak in the wing 
distinguishes it from both H. versicolor Austen and H. murphyv Austen. 
The male, which appears to be as yet undescribed, is extremely similar to the female in colora- 
tion of body, palpi, antennae, and legs, and also in the markings of the wing. Head distinctly 
larger than in the female; eyes contiguous for some distance; small facets confined to a rather 
small area on the outer inferior part of each eye; area of enlarged facets extensive, occupying 
practically three-fourths of each eye; palpi shorter, somewhat more enlarged basally than in the 
female and directed forward as usual in the males of Tabanidae. 
Two males from Stanleyville. 
This insect has generally been called H. trimaculatum in the Congo. But 
Karsch’s description is sufficiently clear to make it certain that Haematopota 
trimaculata Newstead and H. strigipennis Karsch have been based upon the 
same insect. 
The area occupied by H. strigipenne in West Africa is extensive, since the 
species has been recorded from the Ivory Coast, Dahomey, Sierra Leone, South- 
ern Nigeria, and the French and Belgian Congo (as far east as the Semliki Forest 
and as far south as Kongolo). 
Hippocentrum versicolor Austen 
Hippocentrum versicolor Austen, 1908, Ann. Mag. Nat. Hist., (8) II, p. 354 (9; Lagos, on the 
railway, 574 miles from the coast, Southern Nigeria); 1909, ‘Ilustr. African Blood-Suck. 
Flies,’ p. 134, Pl. XII, fig. 95 (¢). 
BELGIAN Conao. — Bambili, one female (J. Rodhain). This interesting 
insect was sent to me by Dr. H. Schouteden, Director of the Congo Museum. 
H. versicolor also is widely distributed, having been recorded from the Gold 
Coast, Southern Nigeria, Northern Nigeria, Cameroon, Uganda, the Lado En- 
clave of the Anglo-Egyptian Sudan, and the northeastern Belgian Congo. 
