SARCOPHAGA AND ALI.IES 47 



urged the small number of bristles on the scutellum, 

 and the partial plumosity of the arista. 



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

 delphia dipterist, who placed at my disposal for the 

 present work the riches of his private collection. 



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

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

 me, Brachycoiiia puhicorms 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 })ehind, front prom- 

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

 siderably to meet it. Front narrow, .114 of head 

 (average of two, — .095 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 antennae and not strikingly diverg- 

 ent below; parafacials with a row of rather strong 

 bristles, ascending diagonally along the expanding 

 facial impression; antenna? dark brown, third joint 

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

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

 margin though much above the lower line of the head ; 

 arista thickened at base, penultimate joint very short, 

 plumosity shorter than in a normal Sarcophaga and 

 dwindling beyond the middle, so that from a third to 

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

 small hairs extending about a third of the way up; 

 facial impression reddish-brown, conspicuous, wide 

 toward the vibrissee ; bucca over two-fifths of the eye- 

 height, very bristly below; back of head and bucca 

 blackish, with thin cinerous pollen, the former with 

 four or five rows of black hair and almost no pale 

 beard; outer vertical bristle quite small but larger 



