222 DIPTERA OP NORTH AMERICA. [.PART II. 



tarsi brownish-black ; all the hairs, as well as the few short bristles 

 upon them, are yellowish, though the latter appear dark when 

 held towards the light. Halteres and tegulge yellowish, the latter 

 with yellowish cilia. Wings hyaline with a yellow-grayish tinge 

 and yellow veins ; the short and steep posterior transverse vein 

 lies more closely to the axillary incision than to the tip of the 

 wing ; its anterior end is not quite so far distant from the extreme 

 basis of the costa as from the tip of the wing. 

 Hab. New York. 



2. C. delicatus Loew. 9 • — Lsete viridis, abdominis segmentis se- 

 cundo et tertio flavis, antennis nigris, palpis flavis. 



Bright green, the second and third abdominal segments yellow, antennae 

 black; palpi yellow. Long. corp. 0.08. Long. al. 0.10. 



Syn. Chrysotimus delicatus Loew, Neue Beitr. VIII, 74, 2. 



Face blackish-green, covered with white-grayish, not very strik- 

 ing, dust. Palpi pale-yellowish. Antennas black. Front metal- 

 lic-green, indistinctly covered with whitish dust ; frontal bristles 

 black, in another direction fallow-brownish with yellow lustre. 

 The cilia of the orbit seem to be altogether yellow. Thorax 

 and scutellum pale metallic-green, with gray-whitish dust, but 

 shining anol fringed with yellow bristles. The metathorax and 

 the pleuraa have a similar, but more dull, coloring ; the latter are 

 covered with white-grayish dust. The first and the two last ab- 

 dominal segments are green and shining, the second and third, in 

 fresh specimens, are undoubtedly of a yellow color ; in the only 

 specimen, which I possess, both are infuscated to a considerable 

 extent at their basis ; upon the posterior corners they show a 

 dusky-whitish color. The color of the venter cannot be distinctly 

 perceived, but it seems to correspond with that of the upper side. 

 Coxae and feet yellow, only the last joint of the tarsi brownish- 

 black. All their hairs, as also their bristles, are yellowish, though 

 the latter appear to be dark when held towards the light. Hal- 

 teres and tegulae yellowish, the latter with yellowish cilia. Wings 

 hyaline, tinged with grayish ; towards the anterior margin with a 

 yellow-grayish tinge; the veins on the posterior part are more yel- 

 low-brownish, on the anterior part more yellow ; the short poste- 

 rior transverse vein has not such a steep position as in the pre- 



