914 REPORT OF THE HARVARD AFRICAN EXPEDITION 
67. Abdomen pale brownish red, dorsally with broad median triangles which almost or quite 
reach the anterior margins of the tergites; the lateral spots also large and distinct. 
Dorsum of thorax with five longitudinal, rather faint, pale stripes. Length, 17 to 
23 mm T. ustus. 
Abdomen darker reddish brown to brown, with small, narrow, median triangles which are 
shortened or very narrowly pointed anteriorly; the lateral spots as a rule much less 
distimet than: the median tiianeles: 2.2.0. £. sce ss Sa tn eee ee ee + 68. 
68. Dorsum of thorax with four very distinct, white gray, longitudinal stripes. Median 
triangle of third tergite narrowly produced into a long point. Length, 16to18 mm. 
Ce OE Pe ry ee EN ET Ce we ee T. regnaultr. 
Dorsum of thorax with four faint and rather narrow, dark gray, longitudinal stripes. 
Median triangle of third tergite shorter, more equilateral, not reaching the anterior 
marcin. Jhenath: Woe US mm... .s\cad2ca0bero te ee ea ei as T. congovensts. 
Tabanus maculatissimus Macquart 
Tabanus maculatissimus Macquart, 1838, ‘Dipt. Exot.,’ I, 1, p. 121 (@; Cape of Good Hope). 
Austen, 1909, ‘Illustr. African Blood-Suck. Flies,’ p. 91, Pl. VI, fig. 46 (¢). Neave, 1912, 
Bull. Ent. Res., III, pp. 293, 313, 315, and 317, Pl. X, fig. 1( 9). 
BELGIAN Conco. — Panda River (Mich. Bequaert). 
This is the East-and-South African representative of 7. irroratus Surcouf, 
being known from Eritrea, Somaliland, Kenya Colony, Tanganyika Territory, 
the Katanga (Belgian Congo), Northern Rhodesia, Nyasaland, Portuguese East 
Africa, Transvaal, Natal, and the Cape Province. Dr. Bruce and his co-workers 
(1911, Rept. Sleep. Comm. Roy. Soc., XI, p. 205 and 211) report both T. irro- 
ratus and 7. maculatissimus from Uganda; but I believe that only T. trroratus 
is to be found there, as it is the only species listed from Uganda by Neave (1912, 
Bull. Ent. Res., III, p. 322). The fauna of Uganda is West African in character. 
Tabanus irroratus Surcouf 
Tabanus irroratus Surcouf, 1909, Bull. Mus. Hist. Nat. Paris, XV, p. 355 (2; Lastourville, 
French Congo). Neave, 1912, Bull. Ent. Res., III, p. 322, Pl. X, fig. 2 (9). 
BELGIAN Conco. — Uele District, one female (J. Rodhain). Stanleyville, 
seven females, March 1915, as prey of Bembix bequaertt Arnold var. dira Arnold 
(H. Lang and J. P. Chapin). Semliki (C. Christy). Eala (H. Schouteden). 
This species is known from Sierra Leone, the French and Belgian Congo, 
and Uganda. It is the West African representative of 7. maculatissimus Mac- 
quart and may perhaps be regarded as a geographical race of that species. 
Austen’s recent record of 7. irroratus from “Tanganyika Territory, Ituru Dis- 
trict’’ (1926, Ark. f. Zool., XVIII B, No. 6, p. 2), is based upon a confusion with 
the Ituri District of the Belgian Congo, as I shall explain under 7’. marmorosus. 
Tabanus fasciatus Fabricius 
Tabanus fasciatus Fabricius, 1775, ‘Syst. Entomol.,’ p. 786 (no sex; Sierra Leone). Austen, 1909, 
‘Tllustr. African Blood-Suck. Flies,’ p. 78, Pl. VI, fig. 40 (¢). 
Liseria. — Banga, October 1926. Bomboma (near Moala), October 31, 
1926. 
BELGIAN Conao. — Eala; Coquilhatville; Bolengi; Lokutu; Budja Libala: 
