NO. 2024. FLIES IN SUBFAMILY BOTANOBIIN^—MALLOCH. 249 



Paratypes. — One specimen, Vieques Island, Porto Rico (C. W. 

 Richmond); one specimen, Habana, Cuba (S. Fernandez); and one 

 specimen, Andros Key, Bahamas, August 1, 1904 (no collector's 



name) . 



GROUP C. 



Species with Mesonotum Black, Covered with more or less Distinct 

 Dusting; legs Mostly Black with Yellow Markings. 



9. mPPELATES CONVEXUS Loew. 

 Hippelates convexus Loew, Dipt. Amer. Sept. Ind. Cent., 6, 1865, species 94. 



Male and female. ^Glossy black, the color of mesonotum slightly 

 obscured by gray pollinosity; frontal triangle highly glossy; frons 

 yellow, darkened posteriorly; face ajid cheeks yellow; antenna 

 brown, third joint largely yellow below, and particularly so on inner 

 side; proboscis brown; palpi pale yellow. Upper portions of pleurae 

 and lateral margins of mesonotum with gray pollen. Abdomen 

 yellowish at base ajid ventrally. Legs yellow, mid and Mnd coxse 

 browned; mid and hind femora blackened; fore tibiae sojnetimes 

 browned at apex, mid tibiae at middle and most of hmd tibias as well 

 as apices of all tarsi broadly black or brown. Wmgs grayish, veins 

 brown. Halteres yellow. Bristles and hairs black or brown. 



Frons occupying slightly over one-third the width of head; triangle 

 almost touching margins of eyes at vertex, extending three-fomths 

 to anterior margin of frons, its sides slightly cojivex; surface of 

 frontal stripe and margins of triangle with sparse, but distmct, hairs; 

 antennaB of rather above the average size, third joint rounded, or 

 slightly truncate, at apex; arista pubescent, base swollen and the 

 two basal joints slightly elongated; cheek equal in height to slightly 

 over one-half the width of third antennal joint; proboscis not noticea- 

 bly elongated, the apical portion very short, though turned back; 

 eyes almost round, bare. Mesonotum without any distinct lateral 

 rows of hairs with punctm-es at their bases, all the hairs arranged in 

 rows, but difficult to trace because of the absence of these punctures; 

 scutellum rounded in outline, convex, surface with sparse hairs, the 

 two apical bristles not approximated, and no tubercles at their bases, 

 besides the two strong bristles there are two weaker bristles anterior to 

 them. Legs of moderate strength; hmd tibial spur short, equal in 

 length to tibial diameter, situated near the apex. Wings with third 

 costal division about one-half as long as second; veins 3-4 slightly 

 divergent; outer cross vem slightly oblique; penultimate section of 

 fourth vein distinctly shorter than last section of fifth. 



Length, 1.25-1.75 mm. 



Locality originally described from: Cuba. 



Localities of specimens in collection: Baracoa, Cuba, August, 1901 

 (A. Busck); Aguadilla, Porto Rico, September, 1901 (A. Busck); 



