E. T. CRESSON, JR. 45 



Melina albocostata Fallen (PI. I, fig. 15.) 



1820. Sciomyza albocostata Fallen, Dipt. Suec, Sciom., 12. 



Our specimens agree with those examined from Europe, and 

 with Hentlel's description. 



9 . General color pale yellow with pleural stripe distinct. The wings 

 are pale yellowish hyaline with infuscation as figured (fig. 15), with the costa, 

 stigma, and marginal cell including the auxiliary, first and second veins, 

 contrastingly white. Sometimes this differentiation in the color of the wing 

 is not very well marked. In any case the general pale color of the insect 

 will distinguish it from the others of this group. The two frontal bristles 

 are approximate; the mesopleura bare or w'ith one or two microscopic setulae 

 along the posterior margin. The species is apparently boreal in its distribu- 

 tion in our fauna. I have not seen the male sex. Length. — 4 to 5 mm. 



Originally described from Europe. 



Specimens Examined. — 9 9 . 



Canada: Kaslo, British Columbia, Julv 17, (R. P. Currie), [U. S. N. M.], 



Maine: Camp Kennedy, 3000 ft. alt., Mt. Katahdhi, August, [U. S. 

 N. M.]. 



Xew Hampshire: Bretton Woods, June 28; Halfway House, Mt. Wash- 

 ington, July 16; Mt. Washington, 2000 ft. alt.. July 6 to 28; (all C. W. John- 

 son), [all B. S. X. H.]. Mt. Washington, (G. Dimmock, near summit), 

 [U. S. N. M.]. 



Colorado: 1 specimen, [U. S. X. M.]. 



Melina tenuipes Loew 



1872. Scioinijza tenuipes Loew, Berl. Ent. Zeit., xvi, 99. (Cent, x, 80.) 



A species distinguished from the other dark forms by the smaller 

 size, more slender build, longer gray frontal stripes, and pale 

 scutellum. The anterior frontal bristle is midway between the 

 posterior and the anterior frontal' margin. In the other species 

 these Ijristles are nearer together. The single long bristle on 

 the palpi is another character of note. 



d', 9- Black to brown; frons anteriorly, antennae, face, cheeks, palpi, 

 halteres, humeri, scutellum, fore coxae and middle and hind legs, pale. Wings 

 brownish, more or less infuscated along the costa beyond first vein, including 

 submarginal cell; third to fifth veins rather distinctly infuscated. Fore legs 

 excepting coxae entirely black; hind femora not infuscated apically. Opaque; 

 broad frontal orbits, median triangle, occiput, mesonotum, scutellum, pleura, 

 metanotum, and abdomen more or less densely grayish; mesonotum narrowly 

 vittate with brown anteriorly; apices of abdominal segments narrowly whitish. 

 The gray frontal stripes much more than one-half as long as frons. 



Eyes round; frons broader than long. Epistoma weaklv and sharply 

 produced; cheeks one-third of eye-height. Third antennal joint nearly cir- 



trans. am. ent. soc, xlvi. 



