ENTOMOLOGY 941 
Tabanus inhambanensis Bertoloni (1861, Mem. Accad. Sci. Bologna, XII, 
p. 54, Pl. I, fig. 7; «#; Inhambane, Portuguese East Africa), known from the 
type only, was evidently based upon a male of 7’. ustus var. disjunctus. 
T’. ustus (with its var. disjunctus) appears to be a species of the African savan- 
nas, south and east of the rain forest belt. In the east it occurs as far north as 
the grasslands of Uganda and of the Upper Uele country. Southward it extends 
to Cape Colony. 
Tabanus distinctus Ricardo 
Tabanus distinctus Ricardo, 1908, Ann. Mag. Nat. Hist., (8) I, p. 326 (?; Benguela). Surcouf, 
1909, ‘Et. Monogr. Taban. Afrique,’ pp. 94 and 115 (¢).1. H. H. King, 1911, ‘Fourth Rept. 
Wellcome Res. Lab. Khartoum,’ vol. B, p. 112, Pl. II, fig. 1 (¢). 
A number of records of this species have been published for the Belgian Congo, 
but they may all have been based on erroneous identifications. The species does 
not appear to be represented in the material now before me. Moreover, there is a 
possibility that 7’. distinctus is not specifically distinct from 7’. ustus Walker, as 
was suggested by Surcouf (1921, ‘Gen. Insect., Tabanidae,’ p. 88). 
Tabanus congoiensis Ricardo 
Tabanus congoiensis Ricardo, 1908 (April), Ann. Mag. Nat. Hist., (8) I, p. 328 (2; Wathen, Bel- 
gian Congo). Austen, 1909, ‘Illustr. African Blood-Suck. Flies,’ p. 99, Pl. VIII, fig. 56 (¢). 
Tabanus lemairet Surcouf, 1908 (April), Bull. Mus. Hist. Nat. Paris, XIV, p. 123 (9; Katanga 
District, Belgian Congo).? 
Tabanus congolensis Bruto da Costa, Firmino Sant’Anna, Correia dos Santos, and de Araujo 
Alvares, 1916, ‘Sleeping Sickness in Principe,’ pp. 218 and 232. 
The descriptions of 7’. congovensis and T. lemairet appeared almost simul- 
taneously and it is difficult to decide which name has priority. The probability, 
however, is in favor of Miss Ricardo’s name. 
BrLatan Conao. — Djambi (between Bomili and Avakubi), one female, 
December 22, 1914; Lubutu, January 26, 1915. Bafuka, Uele District (J. Rod- 
hain). Niangara; Lisala; Coquilhatville; Stanleyville, seven females and two 
males, as prey of Bembix bequaertz Arnold var. dira Arnold (H. Lang and J. P. 
Chapin). 
Male (undescribed). — Length of body, 18 mm.; width of head, 6.5 mm.; length of wing, 14 mm. 
In coloration very similar to the female, but the ight markings of the dorsum of the abdomen 
smaller and less distinct; the pale stripes of the thorax also fainter, the dorsum being more abun- 
dantly covered with dark pile. Head large, hemispherical, with holoptic eyes; area of enlarged 
facets sharply delimited, occupying most of the upper two-thirds of the eye but separated from 
the posterior orbit by a broad band of small facets. Third segment of antenna more slender than 
in the female. 
One specimen from Stanleyville. 
T. congoiensis is a strictly West African species, known from Sierra Leone, 
Sao Thomé, Cameroon, Principe, the French and Belgian Congo, and Portuguese 
West Africa. Surcouf’s type of 7’. lemairet was probably obtained in the Lower 
Katanga, the fauna of which is West African. 
1 In Surcouf’s Monograph, PI. II, Fig. 15 is referred to 7’. distinctus in the text (p. 115); but on the 
plate itself it is called 7. congozensis Ricardo, and the figure certainly looks more like that species. 
2 J have seen a reprint of Surcouf’s paper bearing the date ‘‘ Avril 1908.” 
