284 S. W. WILLISTON, M. D. 



HABROMYIA gen. nov. 



Allied to Mallota, but the body elongate and bare. Front of the 

 male narrow above, the eyes separated by the ocelli. Eyes bare. 

 Front of female narrowed above. Antenna) situated on a prominent 

 convexity, near the middle of the eyes in profile ; short, the third 

 joint oval, not transverse ; arista bare. Face convex in profile below 

 the antennal protuberance. Head much broader than the thorax. 

 Abdomen elongate, scarcely as broad as the thorax, the sides of the 

 first three segments nearly parallel, thence tapering in both sexes to 

 a point. Legs rather slendei", tlie hind femora elongate and a little 

 thickened, and with short bristles below distally. Wings as in Mal- 

 lota, the curvature of the third vein short and deep. 



The genus is intermediate between Mallota and Xylota, and ap- 

 parently will include Mallota xylotceformis Schiner. In shape, the 

 abdomen cannot be very different from that of Mallota eristaloides, 

 but the antennae and bareness throughout seem sufficient to separate 

 the genus. 



82. Habroiiiyia coeruleitliorax n. sp. 



% 9 • — Length 12 — 14 mm. Head black ; face on the sides narrowly and thinly 

 white dusted, the front in both sexes with a narrow pollinose orbital margin and 

 across the middle ; tip of the frontal process above reddish yellow. AntenniE 

 brownish red, the arista brownish yellow. Dorsum of thorax deep shining me- 

 tallic blue; finely punctulate, very nearly bare; in front in the middle with the 

 beginning of two deep opaque stripes, separated by a line, and a spot of similar 

 color over each humerus. Abdomen opaque bluish black, the first segment some- 

 what shining reddish ; the following segments when seen obliquely, with a dense 

 sericeous yellowish pubescence. Legs blackish brown, the base of the four ante- 

 rior femora reddish yellow, the middle tarsi brownish red. Wings hyaline on 

 the posterior part, deep brown in front; the brown borders the fifth vein behind 

 to the base of the last posterior cell, and extends thence to the posterior angle of 

 the first posterior cell, filling out this cell, except an oval sinus in front of the 

 last section of the fourth vein. 



Two specimens, Chapada. The male abdomen is shaped nearly as 

 in the female, the hypojiygial segment forming an apparently addi- 

 tional one, the sexual organs showing as an oval intercalated body 

 below, some distance before the tip. The convexity of the third 

 vein has a stump of a vein projecting into the first posterior cell in 

 the female, not in the male. Whether it is a sexual or individual 

 character it is impossible to say. 



83. Xylota geniiiiia n. sp. 



9 . — Length 12 mm. Black, without yellow markings. Third antennal joint 

 elongate oval, reddish brown, the intermediate ground upon which the an- 



