8 



DIPTERA 



TABLE OF (iENERA 



No iucompleie vein near the posterior margin of the wings ( = an incom- 

 plete iiiedia^ lacking). 

 Eyes bisected hy an unfacetted cross-band or line into a dorsal brownish 

 region of larger facets and a lower black region of smaller 

 facets. 



A longitudinal vein between the first and fourth veins (=- radial » 



vein at least two-branched) i. Genus Apisto.myia. Bigot, p. 8. 



No longitudinal vein between the first and fourth veins (= radial 



vein unbranched) 2. Genus Hammatorhina, Loevv, p. 9. 



Eyes not bisected by an unfacetted cross-band ; a longitudinal vein 

 between the first and fourth vei>is (= radial vein branched). 

 Eyes separated by a broad front. 



Proboscis long, palpi but little developed 3. Genus Paltostoma, Schiner, p. g. 



Proboscis not longer than the vertical diameter of the head ; well 



developed four-segmented palpi 4. Genus Kelloggina, Williston, p. 10. 



Eyes contiguous. 



Ungues of the ordinary structure ; tibia with spurs at the tip . . 5. Genus Curupira, F. Müller, p. 10. 

 Ungues abnormal, pulvilliform ; no spurs at the tip of the tibia' . 6. Genus Hapalothrix, Loew, p. 10. 

 An incomplete vein near the posterior margin of the wings (= an incom- 

 plete media:, pyesent). 

 Second longitudinal vein with two branches {= raditis^ partly distinct); 

 a cross-vein connecting veins 7 and 5 (= a medio-cubital 

 cross-vein). 



Anterior branch of second vein and veins 2 and 3 all separating at 

 a common point or close together {radius^, radius^, and 



radius.i all separating at a common point or close together). 8. Genus Bibiocephai.a, O. -Sacken. p. i3. 

 Second longitudinal vein simple, without branches (= radius^ wholly 

 fused 'with radius:,). 

 No cross-vein connecting veins 4 and 5 (== no medio-cubital cross- 

 vein) 7. GenusBLEPHAROCERA,Macquart,p.ii. 



A cross-vein connecting veins 4 and 5 (= a mediu-cubital cross- 



vein) g. Genus Philorus, Kellogg, p. 14. 



I. Genus APISTOMYIA, Bigot 



Apistomyia. Bigot, Ann. Soc. Ent. Fr. (4), Vol. 2, p. log, pi. i, f. i (1862); Loew, Boll. Soc. Ent. 

 ital. Vol. I. p. 97, pi. 2, f. 1-3 (i86g); Loew, Schles. Zeitschr. f. Ent. N. F. Vol. 6, p. 71, gi, 

 pi. I , f. I (1877 j ; Osten-Sacken, Berl. Ent. Zeit. Vol. 36, j). 410 (i8gi) and Vol. 40, p. 162 (i8g5); 

 Sknuse, Zeitschr. f. LI}m. u. Dipt. Vol. i, p. 145 (1901); Kertész, Cat. Dipt. Vol. i, p. 283 

 (1902) (elegans). 



Characters. — No incomplete vein near the posterior margin of the wings; eyes bisected by 

 an unfacetted cross band or line into a dorsal brownish region of larger facets and a lower black region 

 of smaller facets; a longitudinal vein between the first and fourth veins. 



