1918] Dipterous Genus Drapetis Meigen 185 



Elaphropeza Macquart 



Macquart, Dipt. Nord Fr. iii. 86 (1827); Hist. Nat. Dipt. i. 359 (1834). 



Westwood, Gen. Syn. 132 (1840). 



Zetterstedt, Dipt. Sc. i. 326 (1842). 



BoiTARD, Nouv. Man. iii. 325 (1843). 



W.^LKER, Ins. Brit. Dipt. i. 134 (1851). 



RoNDANi, Dipt. Ital. Prodr. i. 147 (1856). 



Bigot, Ann. Soc. Ent. Fr. (3) v. 564 (1857). 



ScHiNER, F. A. Dipt. i. 94 (1862). 



Bigot, Ann. Soc. Ent. Fr. (6) ix. 122 (1889). 



Becker, Mitth. Zool. Mus. Berl. ii. 43 (1902). 



CoQUiLLETT, Proc. Ent. Soc. Wash. v. 249, 261 (1903). 



Bezzi, Ann. Mus. Hung. ii. 321, 346 (1904); v. 567 (1907). 



CoQCiLLET, Proc. U. S. Mus. xxxvii. 537 (1910). 



LuNDBECK, Dipt. Dan. iii. 272 (1910). 



Melander, Psyche, xvii. 49 (1910). 



Wahlgren, Ent. Tid.skr. xxxi. 45 (1910). 



Bezzi, Ann. Mus. Hung. x. 478 (1912). 



GENERAL MORPHOLOGY. 



Head globular, sometimes slightly longer than high, the 

 occiput more or less hemispherical; eyes large, bare, at most 

 with scattered microscopic hairs, the facets of uniform size, 

 beneath the antennas the eyes of both sexes nearly touching, 

 leaving the face linear or very narrow, above the eyes the front 

 is V-shaped, always broader than the face, sometimes the front 

 is quite narrow; three small ocelli present. Excision of the 

 eyes at the level of the antennae very large; cheeks sometimes 

 entirely obliterated, usually about one-eighth the height of the 

 eye, with the oral margin obliquely descending posteriorly. 

 Proboscis thick, rather sharply pointed, perpendicular or 

 directed backward, averaging one-half the height of the head, 

 its labrum with prominent base and as long as the labium; 

 palpi broadly oval, one-jointed, applied to the proboscis, the 

 inside glabrous and shining, the outside pollinose and with 

 more or less evident recumbent pubescence, generally tipped 

 with a longer seta. Antennae inserted close together a little 

 above the middle of the head, three-jointed, very rarely the 

 basal joint is wanting, the second joint with a circle of small 

 setulae, the bottom hair of which is sometimes long, the third 

 joint compressed, varying from short oval, not longer than deep 

 and with subterminal arista to lanceolate or conical, nearly 

 twice as long as deep and with terminal arista ; the arista usually 

 slender, nearly bare, two-jointed, its basal joint small, its outer 

 joint two or three times as long as the antennas, rarely the hairy 

 coating is dense and longer so as to give a thickened appearance 



