Mr. J. R. Malloch on Exotic Muscaride. 171 
black, arista yellowish. Thorax with four slender black 
vitte, slightly pruinescent. Abdomen with an indistinct 
dorso-central vitta, slightly grey pruinescent. Legs obscurely 
brownish yellow, femora more or less blackened, tarsi fuscous. 
Wings slightly brownish: Calyptre grey, margins fuscous. 
Halteres brown. 
Eyes short-haired ; frons less than one-third of the head- 
width at vertex, widened anteriorly ; third antennal segment 
about three times as long as second; arista very long- 
haired ; cheeks very narrow; palpi slender. Acrostichal 
area in front of suture with about ten series of short 
hairs ; postsutural dorso-centrals three ; sterno-pleurals 1 : 2; 
both intra-alars long. Fore tibia without median bristle ; 
fore tarsi without sensory hairs; mid tibia with three 
posterior bristles ; hind femur with one preapical antero- 
ventral bristle; hind tibia with one antero-dorsal and two 
antero-ventral bristles. Outer cross-vein much curved ; 
veins 8 and 4& divergent apically. 
Length 10 mm. 
Type, Villavicencio, Quatiquia River, Colombia, xi.—xil. 
1914 (Dr. A. Balfour). 
This genus is distinguished from any known to me by the 
orbital bristling, possession of only one pair of dorso-centrals 
on thorax in front of suture, and the hairing of the ptero- 
pleura. 
Genus Pa@ciLoPHAoNIA, nov. 
Generic characters: Male.—Hind tibial calear_ well 
developed. First and third wing-veins from base to apex 
with setule; prosternum, middle of pteropleura and of 
declivous portion of lateral margin of thorax in front of 
scutellum hairy; sides of scutellum setulose, lower surface 
bare. Third vein of wing slightly curved forward at apex; 
prealar bristle long. 
Genotype, Aricia flavithoraz, Stein. 
This species is known to occur in Peruand Brazil. Another 
species, Aricia basicincta, Stein, probably belongs to this 
genus. 
One male from Brazil, taken on S.S. ‘Faraday,’ 
11.1. 1896, 80 miles below Breves (#. E. Austen), is in the 
material before me. 
Genus STr£INELLA, nov. 
Generic characters.—Pteropleura partly hairy ;_ pro- 
sternum and hypopleura bare ; both intra-alar bristles long ; 
