﻿June, 1895.] CogUILLETT. DESCRIPTIONS OF TaCHINID^. 53 



with a discal, row of ten. Claws and pulvilli much shorter than the last tarsal joint ; 

 front tarsi not dilated. Wings hyaline, costal and marginal cells, except base of the 

 latter, yellow, a small deep black cloud on the small crossvein ; third vein bearing 

 four bristles at its base, the others bare ; apical cell open slightly before the wing-tip, 

 hind crossvein somewhat oblique, nearly midway between the small crossvein and 

 the bend, the latter angular, apical crossvein strongly curved inward, small crossvein 

 distinctly beyond apex of first vein ; calypteres whitish. Length 5.5 mm. 



Florida. A single specinien from Mrs. A. T. Slosson. 

 Clytiomyia exile, sp. nov. 



S — Differs from'above description of punctata as follows : Occiput, thorax, 

 scutellum and abdomen, except sometimes the sides of the first two segments, black ; 

 no black spot near base of costa nor on the small crossvein. Front at vertex less 

 than one-third as wide as either eye, frontal bristles descending only to base of an- 

 tennae, vitta next the antennje sub-equal in width to either side of the front, no orbi- 

 tal bristles ; vibrissa inserted at lowest third of face, not stouter than the bristles be- 

 low them, cheeks one-half as broad as the eye-height. Antennae having the third 

 joint one-fourth longer than the second, one-third longer than broad. Thorax gray 

 pollinose, marked with four blackish vittre. Abdomen gray pollinose, macrocha;t?e 

 of fourth segment in a marginal row of eight; genitalia protruding half the length of 

 the fourth segment. Wings hyaline, tinged with yellowish, bend of fourth vein ar- 

 cuate ; hind calypteres yellowish. Length 6 to S mm. 



New Hampshire (Mrs. Slosson) and Maryland. Two specimens. 

 Clytiomyia atrata, sp. nov. 



$ — Differs from the description of punctata as follows : Wholly black except 

 the palpi ; no black spot near base of costa nor on the small crossvein. Eyes almost 

 contiguous, vitta next the antennae sub-equal in width to either side of the front, 

 cheeks one-third as broad as the eye height, no orbital bristles; vibrissa not stouter 

 than the bristles below them, inserted at lowest third of the face. Third joint of an- 

 tennae one-fourth longer than the second, one-third longer t: an broad. Proboscis 

 slender, the last section three-fourths as long as height of head, labella small. 

 Thorax grayish pollinose, with four blackish vittie. Abdomen whitish pollinose, 

 macrochaetae of fourth segment in a marginal row of eight, genitalia slightly pro 

 truding. Wings pure hyaline, extreme base yellowish, only a single bristle at 

 base of the third vein, fourth vein arcuate at the bend. Length 7 mm. 



Washington. A single specimen from Prof. O. B. Johnson. 



Thryptocera Macq. 



In their work on the Muscida; Calypterata (Zweif. Kais. Museums 

 Wien, iv., p. 102, and vi,, p. 150), Brauer and Bergenstamm erron- 

 eously credit this genus to Meigen ; it was first described by Macquart 

 (Hist. Nat. Dipt., H., pp. 87-88, 1835). Meigen's re-description ap- 

 peared three years later (Syst. Besch., VII., p. 242, 1838), and he cor- 



