1924] Notes Upon Surcoufs Treatment of the Tabanidoe 
31 
The following additional genera of Tabanidse are of more 
recent date: 
Heterochrysops Krober, Zool. Jahrb., Abt. f. Syst., XLIII, 
1920, p. 55. For a number of Palaearctic species of Chrysops, 
none of which is designated as type. Chrysops flavipes Meigen, 
1804, is herewith selected as such. 
Neochrysops Szilady, Ann. Hist. Nat. Mus. Hungarici, XIX, 
1922, p. 126. Type by original designation: Neochrysops 
grandis Szilady, 1922, Formosa. The name is preoccupied by 
Neochrysops Walton, 19 18.^ The genus, however, appears 
doubtfully distinct from Chrysops and need therefore not be 
renamed at present. 
Sitviochrysops Szilady, Ann. Hist. Nat. Mus. Hungarici, 
XIX, 1922, p. 126. Monotypic for Silviochrysops flavescens 
Szilady, 1922, Formosa. 
Surcoufia Krober, Arch. f. Naturgesch., LXXXVIII, Abt. 
A, Heft 8, 1922, p. 115. Monotypic for Surcoufia paradoxa 
Krober, 1922, Northwest Africa. 
Finalh^ in a recent paper which will be considered in detail 
below, Enderlein has proposed a considerable number of new 
generic names. These it appears unnecessary to list at present, 
since their exact status is as yet uncertain. 
Remarks Upon North American Species. 
Among the misspellings of names, I mention only those of 
Chrysops nigrihimho Whitney (not nigrilimbo) and Tabanus 
super jumentarius Whitney (not suberjumentarius) . 
Tabanus lugubris Osten Sacken appears to belong properly 
in the genus Snowiellus, from examination of a specimen obtained 
at Tampa, Florida, by Mr. E. Bell. 
Tabanus whitneiji Johnson belongs in the genus Merycomyia. 
Tabanus mexicanus. The synonymy and distribution given 
by Surcouf under that name should be revised. As shown by 
F. Knab (Insecutor Inscitise Menstruus, IV, 1916, pp. 95-100), 
four species have been commonly confused under mexicanus: 
^Neochrysops Bethune-Baker, Trans. Ent. Soc. London, (1922) 1923, 
p. 279, in Lepidoptera, is similarly preoccupied. 
