FAM. EMPIDID/E 23 
20. H. major, Bezzi, Ann. Mus. Hungar, Vol. 10, p. 454 [1912] (Nveeza); Formosa. 
Suppl. Entom. Berlin, Vol. 3, p.66 [1914] (Noeza) ; Meijere, Tijdschr. 
v. Ent. Vol. 56, Suppl. p. 67 (1914). 
—. H. marshamanus, Stephens, Syst. Cat. Brit. Ins. Vol. 2, p. 260 (1829) no 
description. 
21. H. mellipes, Wheeler & Melander, Biol. Centr.-Amer. Dipt. Vol. 1, p. 373 Mexico. 
(1901); Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 247, pl. 7, f. 78 
(1902); Bezzi, Nova Acta Akad. Naturf. Halle, Vol. 91, p. 305 (1909). 
H. neotropicus, Bezzi, Ann. Mus. Hungar, Vol. 3, p. 426 (1905); Nova Bolivia, Peru, 
Acta Akad. Naturf. Halle, Vol. 91, p. 310 (1909): 
H. nervosus, Stephens, Syst. Cat. Brit. Ins. Vol. 2, p. 260 (1829) no des- 
cription. 
H. niger, Brunetti, Rec. Indian Mus. Vol. 9, p. 12 (1913); Fauna Brit. India. 
Ind. Dipt. Vol. 1, p. 340 (1920). 
24. H. nigronitidus, Brunetti, Rec. Indian Mus. Vol. 9, p. 11 (1913); Fauna India. 
Brit. Ind. Dipt. Vol. rz, p. 342 (1920). 
H. nitens, Brunetti, Rec. Indian Mus. Vol. 9, p. 13(1913); Fauna Brit. India. 
Ind. Dipt. Vol, r, p. 341 (1920). 
H.allibes, Meijere, Tijdschr. v. Ent. Vol. 54, p. 323 (1911); Bezzi, Java. 
Suppl. Ent. Berlin, Vol. 3, p. 67 [1914] (Voeza); Meijere, Tijdschr. 
v. Ent. Vol. 56, Suppl. p. 68 (1914). 
27. H. papuanus, Kertesz. Termesz. Fuezet. Vol. 22, p. 175, f. 1 (1899); van. New Guinea. 
der Wulp, Tijdschr. v. Ent. Vol. 47, p. 49 (1899); Bezzi, Ann. Mus. 
Hungar, Vol. 2, p. 328 (1904); ibidem, Vol. 1o, p. 454 (1912) (?). 
28. H. plumicornis, Bezzi, Suppl. Ent. Berlin, Vol. 3, p. 67 [1914] (Nvezsa). Formosa. 
29. H. pollinosus, Bezzi, Ann. Mus. Hungar, Vol. 2, p. 326 (1904). Australia. 
3o. H. reversus, Walker, List. Dipt. Brit. Mus. Vol. 3, p. 487 (1849); Osten- North America. 
Sacken, Cat. Dipt. N. Amer. p. 240 (1878); Coquillett, Proc. U. S. 
Nat. Mus. Vol. 18, p. 437 (1896); Melander, Trans. Amer. Ent. 
Soc. Vol. 28, p. 248 (1902). — PI. I, Fig. 5. 
var. Slossonz, Coquillett, Proc. U. S. Nat. Mus. Vol. 18, p.437(1896); Melander, E. United States. 
Trans. Amer. Ent. Soc. Vol. 28, p. 247 (1902). 
31. H. sciapterus, nov, sp. (1). ; Costa Rica. 
32. H. setosus, Meijere, Tijdschr. v. Ent. Vol. 54, p. 324 (1911); Bezzi, Suppl. East Indies. 
Ent. Berlin, Vol. 3, p. 66[1914] (Noeza) ; Meijere, Tijdschr. v. Ent. 
Vol. 56, Suppl. p. 68 (1914). 
33. H. spinicosía, Wheeler & Melander, Biol. Centr.-Amer. Dipt. Vol, r, Mexico. 
P. 374 (1901); Melander, Trans. Amer. Ent. Soc. Vol. 28, p. 246, 
f. 77 (1902); Bezzi, Nova Acta Akad. Naturf. Halle, Vol. gr, p. 3o4 
(1909). 
34. H. striatellus, Villeneuve, FeuilleJeun. Natur. Paris, Vol. 43, p. r11(1913). France. 
26. 
(1) Hybos sciapterus, nov. sp. — Male. Length 5 mm. Third antennal joint short oval, arista three times 
antennal length; upper facets slightly enlarged; occiput cinereous. Mesonotum coated with yellow dust leaving three 
rounded shining spaces on each side, dorsocentral and distant apical scutellars strong; pleure  whitish pruinose. 
Abdomen with light marks of yellow pollen, forming dorsal spots on segments two and three, and basal bands on 
four following segments; pygidium with fringes of conspicuous black hair. Coxz black, anterior femora luteous, with 
a dark streak above near base, front femora with six long fine setze below, front tibize and tarsi jet black, the metatarsus 
three-quarters length of the tibia, hind femora robust, ten black spinous bristles forming anterior flexor row, hairs 
yellow, longer below, giving the lower posterior face a ciliate appearance, flexor denticles arising from small tubercles, 
hind knees broadly luteous, hind tibize brownish except the lighter ends, sole of hind tarsi with black denticles, middle 
tibie with very long black setz, one below knee, one at basal third, one at middle within and one at apex. Wings 
large of strong brown color, veins black, sections of fourth vein 2 ; 1. 
Holotype, La Suiza de Turrialba, Costa Rica, Pablo Schild, collector. 
