ENTOMOLOGY 903 
Lesneus Surcouf 
Lesneus Surcouf, 1921, ‘Gen. Insect., Tabanidae,’ p. 161. Monotypic for Lesneus canescens Surcouf, 
1921. Enderlein, 1925, Mitt. Zool. Mus. Berlin, XI, 2, p. 317. 
The only species of this genus was described from Obock (French Somaliland). 
SUBFAMILY TABANINAE 
Tribe Tabanini 
Tabanus Linnaeus 
Tabanus Linnaeus, 1758, ‘Syst. Nat.,’ 10th Ed., I, p. 601. Type by designation of Latreille (1810), 
accepted by Coquillett (1910): Tabanus bovinus Linnaeus, 1758. 
Therioplectes Zeller, 1842, Oken’s Isis, Jahrgang 1842, Heft XI, p. 819. Type by designation of 
Coquillett (1910): Tabanus tricolor Zeller, 1842. 
Atylotus Osten Sacken, 1876, Mem. Boston Soc. Nat. Hist., II, pt. IV, No. IV, pp. 425 and 426. 
Type by designation of Coquillett (1910): Tabanus bicolor Wiedemann, 1821. 
Euancala Enderlein, 1922, Mitt. Zool. Mus. Berlin, X, 2, p. 346; 1925, loc. cit., XI, 2, p. 352. 
Type by original designation: Tabanus maculatissimus Macquart, 1838. 
Ancala Enderlein, 1922, Mitt. Zool. Mus. Berlin, X, 2, p. 346; 1925, loc. cit., XI, 2, p. 352. Type 
by original designation: Tabanus fasciatus Fabricius, 1775. 
Ateloza Enderlein, 1923, Deutsche Ent. Zeitschr., p. 545; 1925, Mitt. Zool. Mus. Berlin, XI, 2, 
p. 344. Monotypiec for Ateloza fiilleborni Enderlein, 1923. Not Ateloza Enderlein, 1919, 
Sitzungsber. Ges. Naturf. Fr. Berlin, p. 352 (in Tenthredinoidea). 
Brachytomus A. Costa, 1857, Il Giamb. Vico, Napoli, I], 3, p. 445. Monotypie for Brachytomus 
ursus Costa, 1857 = Tabanus gigas Herbst, 1787.1 
Ochrops Szilddy, 1915, Ent. Mitt. Berlin, IV, p. 93. Type by designation of Enderlein (1925): 
Tabanus plebejus Fallen, 1817. 
Dasystypia Enderlein, 1922, Mitt. Zool. Mus. Berlin, X, 2, p. 347; 1925, loc. cit., XI, 2, p. 370. 
Type by original designation: T’abanus rusticus Linnaeus, 1767. 
Straba Enderlein, 1923, Deutsche Ent. Zeitschr., p. 545; 1925, Mitt. Zool. Mus. Berlin, XI, 2, 
p. 355. Type by original designation: Tabanus sudeticus Zeller, 1842. 
Sziladya Enderlein, 1923, Deutsche Ent. Zeitschr., p. 545; 1925, Mitt. Zool. Mus. Berlin, XI, 2, 
p. 366. Type by original designation: Tabanus gigas Herbst, 1787. 
Sziladynus Enderlein, 1925, Zoolog. Anzeiger, LXII, p. 181. Type by original designation: 
Tabanus aterrimus Meigen, 1830. 
The above synonymy includes only names that have been used for African 
species. As set forth below, some of them may be retained for natural divisions 
of the genus, although none of them are in my opinion of more than subgeneric 
value. 
1. Therioplectes Zeller contains species with thickly pilose eyes, in which the 
vertex is somewhat raised in the middle and often more or less divided by a 
longitudinal depression, but without forming a shiny callosity. As later recog- 
nized by Enderlein, his genus Sziladya is identical with Therioplectes, since T. 
gigas Herbst and T’. tricolor Zeller are very closely allied. Brachytomus Costa 
is likewise a synonym of Therioplectes Zeller (and not of Atylotus Osten Sacken, 
as given by Enderlein), since the type species is the genotype of Sziladya Ender- 
lein. In the Ethiopian Region, Therioplectes appears to be restricted to the 
higher mountains, where it represents a Palaearctic element. I regard the 
following three species as belonging to this subgenus: 7’. ruwenzorii Ricardo 
1 Listed after Coquillett, who, however, spells it Brachystomus. The fuller title of the periodical is 
“‘T] Giambattista Vico: Giornale Scientifico.”’ (Napoli.) 
