May 1890.] 



PSYCHE. 



339 



long as tlie fore tibiae, plain, being neither 

 attenuated nor infuscated. Median legs pale 

 yellow throughout; femora with preapical 

 bristle. Hind femur eciliate, black, with 

 yellow tip and with preapical bristle; tibia 

 setose, not incrassated, with its anterior face 

 and tip black, its base and posterior face 

 vellovv the latter with five prominent setae; 

 tarsi entirely black. Halteres yellow. Wings 

 gray, hyaline; the venation resembling that 

 of other dark-legged species of Dolic/ioptis; 

 costa presenting a short but distinct swelling 

 at the juncture of the first longitudinal vein; 

 this swelling does not interrupt the straight 

 outer contour of the costa but bulges out dis- 

 tinctly on its inner edge; veins black pos- 

 terior cross-vein forming right angles with 

 the fifth longitudinal vein. The base of the 

 wing is rath&r acute. 



Habitat: Milwaukee Co., Wis. 



This species is to be admitted to the 

 group comprising Loew's D. pachy- 

 c?zemus and brevipennis, both of which 

 are characterized by having tlie cilia of 

 the inferior orbit black, while the pre- 

 vailing color of the legs is yellow^. The 

 male incoiigruus differs from the males 

 of both of Loew's species in having the 

 tegular cilia yellow, in the coloration of 

 the legs, in having the fore tarsi plain 

 and the hind femora eciliate. There 

 are several other differences but these 

 will suffice to separate the species. 



DoLiCHOPus scoPARius, Loew. $. 



A male agreeing closeh' with Loew's 

 description of this species was sent me 

 from Mass. by Mr. S. Henshaw. The 

 hypopygial lamellae vv^ere so nearly de- 

 stroyed in the single specimen from 

 which Loew's description was taken 



that he could only affirm that thev were 

 yellow. In my specimen they are well 

 preserved and very unlike the h\popy- 

 gial lamellae of other species of Doli- 

 chopiis known to me. They are rather 

 large, entirely pale yellow, of a rhom- 

 boidal shape, and have their somewhat 

 swollen edges smooth and entire, not 

 jagged as in other species. The upper 

 (or when the hypopygium is flexed 

 back in line with the abdomen, the 

 under) edge is slightly twisted, folded 

 in and fringed with delicate black hairs, 

 which I take to be the homologues of 

 the ragged fringe so characteristic of 

 most species. 



DOLICHOPUS FLAGELLITENEXS, n. sp. J. 



Length 5 mm. ; length of wing 4.5 mm. 



Rather dark metallic green. Palpi j-ellow, 

 black at their tips. Face about the normal 

 breadth for a male, overlaid with yellowish 

 gray dust. Antennae of medium size; first 

 joint yellow, with the usual black hairs con- 

 spicuous; second joint yellow with its dor- 

 sal half black; third joint small, rounded, 

 black, blunt anteriorly; arista rather robust, 

 blackish with short white pubescence. 

 Front metallic green with coppery reflection ; 

 cilia of the inferior orbit short, yellow. 

 Thoracic dorsum dusted in front with white, 

 the median line coppery; humeral callosity 

 concolorous with the dorsum. Scutellum 

 with a large coppery spot on each side of the 

 median line. Pleurae dull metallic green 

 dusted with white posteriorly. Tegulae with 

 black cilia. Abdomen with coppery reflec- 

 tion ; venter overlaid with white dust: h\'po- 

 pygium black, lamellae of moderate size, 

 suboblong, white, upper edge infuscated and 

 fringed with rather weak black hairs. Fore 

 coxae yellow, blackened only at their bases; 

 beset in front with several long and conspic- 

 uous black setae ; posterior coxae concolorous 



