104 DIPTERA 
6: I. luctuosa, Kirby, FaunaN. Amer. (Zool.) Ins.Vol. 4, p. 311 [1837] (Emfis); Canada. 
Walker, List Dipt. Brit. Mus. Vol. 3, p. 496 [1849] (Emjis); 
Bethune, Canad. Ent.Vol. 13, p. 165[1881]( Empis) ; Coquillett, Proc. 
U.S. Nat. Mus. Vol. 18, p. 397, 400 [1895] (Empis); Melander, 
Trans. Amer. Ent. Soc. Vol 28, p. 296 [1902] (Empis). 
geniculata, Kirby, Fauna N. Amer. (Zool.) Ins. Vol. 4. p. 311 [1837] 
(Empis); Bethune, Canad. Ent. Vol. 13, p. 165 [1881] (Empis) ; 
Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 296 [1902] (Empís). 
7. I. Maackii, Loew, Beschr. Eur. Dipt. Vol. 2, p. 252 (1871). Siberia. 
8. I. Macquarti, Zetterstedt, Fauna Ins. Lappon. p. 541 (1838); Dipt. Scand. Europe, Siberia, North 
Vol. 1. p. 258 (1842). Vol. 7, p. 3oo1 (1849). Vol. 1t, p. 4269 (1852); America. 
Bonsdorff, Finl. tváv. Ins. Dipt. Vol. r, p. 145 (1861); Schiner, 
Fauna Dipt. Austr. Vol. r, p. 111 (1862); Siebke, Cat. Dipt. Norv. 
p. 19 [1877] (Steaphila); Melander, Trans. Amer. Ent. Soc. Vol. 28, 
p. 331 (1902); Wahlgren, Ent. Tidskr. Vol. 31, p. 64 (1910); Frey, 
Acta Soc. Sc. Fenn. Helsingfors, Vol. 37 (3), p. 36, pl. 1, f. 2 (1913). 
PI. 6, Fig. 59. 
? geniculata, Zetterstedt, Dipt. Scand. Vol. z, p. 375 [1842] (Empis); Siebke, 
Nyt. Mag. Naturvid. Vol, 12, p. 153 (1864); Loew, Berl, Ent. Zeitschr, 
Vol. 11, p. 61 (1867). 
setacea, Becker, Berl. Ent. Zeitschr. Vol. 31, p. 13o [1887] (Steleocheta) ; Acta 
Soc. Sc. Fenn Helsingfors, Vol. 26 (9), p. 27 [1900] (Steleocheta). 
9. I. nigra, Philippi, Verh. Zool. bot. Ges. Wien, Vol. 15, p. 75r, pl. 28, Chili. 
f. 48 [1865] (SPhicosa); Bezzi, Ann. Mus. Hungar. Vol. 3, p. 458. 
[1905] (SPhicosa). 
10. I. nitidula, Zetterstedt, Fauna Ins. Lappon, p. 451 (1838); Dipt. Scand. C. and N. Europe. 
Vol. 1, p. 260 (1842); Wahlgren, Ent. Tidskr. Vol. 31, p. 65 (1910). 
meridionalis, Becker, Wien. Ent. Zeit. Vol, 11, p. 126 [1892] (Steleocheta). 
styriensis, Becker, Wien. Ent. Zeit. Vol. 10, p. 284 [1891] (Steleocheta) ; Strobl, 
Mitteil, Naturw, Ver. Steiermark, Graz, Vol. 34, p. 201 (1898). 
11. IJ. obscura, Zetterstedt, Dipt. Scand. Vol. 8, p. 3o18[1849](Hilara); Strobl, —N. Europe. 
Verh. Zool. bot. Ges. Wien, Vol. 42. p. 180 [1892] (Hilara); Frey, ; 
ActaSoc. Sc. Fenn. Helsingfors, Vol. 37 (3), p. 37, pl. 1, f. 3 (1913). 
var. fuscipennís, Frey, Acta Soc, Sc. Fenn. Helsingfors, Vol. 37 (3), p. 39 (1913). 
12. I. orchestris, Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 354 (1902). New Mexico. 
13. I. tríangula, Coquillett, Proc. Wash. Acad. Sc. Vol. 2, p. 410 [1900] W. North America. 
(Empis); Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 296 [1902] 
(Emfis); Ent. News, Philad. Vol. 17, p. 378 (1906). 
IO. GENUS ANTHEPISCOPUS, BECKER 
Anthepiscopus, Becker, Wien. Ent. Zeit. Vol. 10, p. 281 (1891); Coquillett, Proc. Eut. Soc. Wash. 
Vol. 5. p. 246. 260 (1903); Bezzi, Ann. Mus. Hungar, Vol. 2, p. 320 (1904); Melander, Williston, 
Man. N. Amer. Dipt. p. 225 (1908); Kertész, Cat. Dipt. Vol. 6, p. 14 (1909). 
Characters. — Rather slender black species about three millimeters in length, the males 
frequently opaque, the females often more shining, bristles relatively fine but often long and abundant. 
Head globular, eyes of the male broadly contiguous on the front, bare, the upper facets moderately 
enlarged, of the female the eyes round, widely separated, facets uniform ; antennae inserted at the middle 
of the head, elongate, plainly three-jointed, the basal joints equal, not strongly setose, the third joint 
somewhat compressed cylindrical, slightly tapering, blunt at the apex, three to five times as long as 
wide, the terminal style very short, two-jointed, the outer joint bristle-like; proboscis extending 
obliquely forward, longer than the head, palpi very long, linear, more or less hairy; occiput hairy, ocellar 
