SARCOPHAGA AXD ALIJES iT 



urged the small niuiiber of bristles on the seutelluin, 

 and the partial plumosity of the arista. 



Xanied in honor of H. S. Harbeck, the Phila- 

 (lelpliia dipterist, who placed at my disposal for the 

 present work the riches of his private collection. 



Type. — Harhcckia tessellata, n. sp.; according 

 to Mr. W. R. Walton, who looked nj) the matter for 

 me, Brachifcoma pubiconm Coq. (Proc. U. S. X. M., 

 XXV, 116) is congeneric. It differs chiefly in not pos- 

 sessing median marginals on the second abdominal 

 segment. 



No. 12. Karbeckia tessellata n. sp. 



Male. Head rather convex behind, front prom- 

 inent, face vertical, lower line of head sloping up con- 

 siderablj^ to meet it. Front narrow, .114 of head 

 (average of two, — .09.5 and .132) ; middle stripe 

 brown, much wider above than parafrontals, the lat- 

 ter and the parafacials blackish, with a thin coating 

 of lustrous gray pollen; frontals 10 to 12, hardly 

 reaching base of antenna? and not strikingly diverg- 

 ent below; parafacials with a row of ratlier strong 

 bristles, ascending diagonally along the expanding 

 facial impression; antenutC dark brown, third joint 

 one and one-half times the second and reaching two- 

 thirds of the way to the vibrisste, which are at the oral 

 margin thougli mucli above the lower line of the head; 

 arista thickened at base, penultimate joint very short, 

 ])lum()sity shorter tlian in a normal Sarcopliaga and 

 dwindling beyond tlie middle, so that from a third to 

 almost a half of the length is bare ; facial ridges witli 

 small hairs extending a])out. a third of the way up ; 

 facial impression reddish-brown, conspicuous, wide 

 toward the vil)rissa?; bucca over two-fifths of the eye- 

 height, very bristly below; back of licad and bucca 

 blackish, Avith tliin cincrous ])ollen, tlie former with 

 four or five rows of bhick hair and almost no pale 

 beard; outer vertical bristle quite small but larger 



