1918] Dipterous Genus Drapetis Meigen 207 



yellow hairs and bristles prominent; mouthparts yellow. Hairs of the 

 thorax long but sparse, scutellum and metanotum reddish brown; base 

 and apex of the abdomen testaceous yellow, the pygidial valves rather 

 large, lateral hairs of the middle segment scale-like. Legs hairy and 

 moderately stout, the middle femora a little the strongest, front femora 

 not setose, the distance between the bristles of the hind tibiae less than 

 one-third the length of the tibiae, the terminal spur small and yellow. 

 Wings narrow, more than three times as long as broad, veins yellow, 

 second, third and fourth sections of the costa proportioned 1 : 1.8 : 0.8, 

 sections of the fourth vein, 1:1: 2.3, of the fifth vein, 1 : 0.4. 



Six specimens: Corazal, Panama, and Motzorongo, Vera 

 Cruz. Type in the U. S. National Museum. 



Elaphropeza comata, sp. nov. 

 cf . Length 1.75 mm. Head black, thorax entirely reddish, middle 

 segments of the abdomen blackish, hairs and bristles pale, hind legs 

 loosely pectinate. Front very narrow, almost linear; antennae fuscous, 

 without seta beneath, the third joint lanceolate, two times as long as 

 broad, the arista twice as long as the antennae, with short pubescence; 

 palpi and proboscis yellow. Thorax rather hairy, four rows of about 

 seven acrostichals, two scutellar bristles. Middle segment of the 

 abdomen with many flattened setulae, last tergite with long hairs, 

 hypopygium elongate, with numerous hairs at apex and below. Legs 

 yellow, the last tarsal joint dark, middle femora alone with preapical 

 bristle, hind tibiae without long extensor bristles, but instead with a 

 series of about ten shorter, regularly placed, erect bristles, similarly the 

 hind metatarsi provided with seven erect extensor bristles, spur of hind 

 tibiae verv^ small and blunt. Halteres dusky, calypteres with eight 

 dusky cilia. Wings rather broad, clear hyaline, the veins brown, the 

 second, third and fourth sections of the costa proportioned 1.6 : 2.5 : 1, 

 the third and fourth veins nearly straight, very slightly converging 

 apically so that the widest part of the first posterior cell is just beyond 

 the termination of the second vein, anterior cross- vein before the middle 

 of the second basal cell, last two sections of the fourth vein proportioned 

 1 :2, of the fifth vein, 3:1. 



One specimen : Trinidad Island, West Indies, collected by 

 August Busck, for the U. S. National Museum. 



Elaphropeza inflexa, sp. nov. 

 Length 1.4 mm. Occiput black, front narrowly V-shaped, at the 

 bottom one-third as wide as the second antennal joint ; antenna rather 

 short, blackish, the second joint without seta, the third joint broadly 

 lanceolate, one-half longer than broad, the arista short-pubescent and 

 one and three-fourths times as long as the antennae; palpi short, whitish, 

 proboscis red. Thorax, including the scutellum and metanotum luteous, 

 unmarked, the hairs noticeable but scattered, four rows of about six 

 acrostichals. Abdomen blackish, the sides of the middle segment with 

 many minute scale-like setulae, last tergite fringed but the elongate 



