872 REPORT OF THE HARVARD AFRICAN EXPEDITION 
Silvius pertusus Loew, Rhinomyza rodhaini J. Bequaert, Rhinomyza praesta- 
bilis Griinberg, Hinea distincta Ricardo, Hinea nigra Enderlein, and Hinea du- 
biosa Mich. Bequaert. Some of these are certainly identical. Thus Hinea 
flavipes and Silvius pertusus were based on the two sexes of one species; Hinea 
distincta is a synonym of Rhinomyza praestabilis; and I regard Hinea nigra 
as being the same as Rhinomyza rodhaint. 
Moreover, I have reached the conclusion that two other poorly known 
African tabanids, thus far generally placed in Silvius, find a much more natural 
place in the genus Hinea. These are Tabanus fallax Macquart (1845, ‘Dipt. 
Exot.,’ Suppl. I, p. 32; 92) and Silvius glandicolor Loew (1858, Ofvers. Vet. 
Ak. Férhandl., XIV, (1857), p. 338; «), both described from Caffraria and, 
moreover, possibly identical. Both agree in having bare eyes and a strongly 
toothed third antennal segment, a combination of characters which prevents 
their being included in either Silvius or Mesomyia, as defined in the present 
paper.’ 
The two species of Hinea known from the Belgian Congo may be separated 
as follows: 
1. Wings blackish brown, with a few hyaline dots and some less dark areas, but without a 
pale cross-band. Head, antennae, palpi and most of the legs bright orange; thorax 
black; abdomen black, with the fifth to seventh segments mostly orange. Upper 
apex of second antennal segment produced into a long point. Vertex depressed be- 
tween the eyes. Fork of third longitudinal vein with a short appendix. Length, 
SR ION Miedo inchs ecisehien char Bako aaah: 2S 5, ste wg ae ae eee H. dubiosa. 
Wings blackish brown, with numerous hyaline or paler areas forming several incomplete 
cross-bands; the preapical band extending far into the second submarginal cell. 
Head, antennae, palpi, legs, thorax, and abdomen mostly brownish black to black; 
antennae and tibiae partly brownish red; second abdominal tergite with two large 
ill-defined brownish red spots. Upper apex of second antennal segment not pro- 
duced. Vertex not depressed between the eyes. Fork of third longitudinal vein with- 
etiappencic, hemenki, Won... 25s cute nee @ Gee eee ee eens eee H. rodhaint. 
Hinea dubiosa Mich. Bequaert 
Hinea dubiosa Mich. Bequaert, 1928, Rev. Zool. Bot. Afric., XVI, 1, pp. 73 and 78, figs. 1, 2, 4, 6, 
and 7 (9; Elisabethville, Katanga, Belgian Congo). 
This species is known only from the type. 
Hinea rodhaini (J. Bequaert) 
Rhinomyza rodhaint J. Bequaert, 1913, Rev. Zool. Afric., IT, 3, p. 229, figs. 5and 6 ( 2; Kibombo, 
Belgian Congo). 
Hinea rodhaint Mich. Bequaert, 1928, Rev. Zool. Bot. Afric., XVI, 1, pp. 71 and 79, figs. 3 and 5 (@). 
Hinea nigra Enderlein, 1925, Mitt. Zool. Mus. Berlin, XI, 2, p. 322 ( ¢; Neu Kamerun = French 
Middle Congo). Mich. Bequaert, 1928, Rev. Zool. Bot. Afric., XVI, 1, pp. 72 and 79 (¢). 
Breieian Coneo. — Hemptinne-St.-Benoit near Luluabourg (P. Calle- 
waert). 
This specimen has the abdomen practically black, the paler spots of the 
1 According to Austen (1913, Ann. Mag. Nat. Hist., (8) XI, p. 562), ‘‘Tabanus fallax Maca. is not a 
Silvius but belongs to an at present undescribed genus allied to Hinea.”’ 
