J. R. MALLOCH , 315 



in a single irregular series. It most closely resembles anthracina 

 of those described in this paper, but the eyes are closer together, 

 the arista has longer hairs, the prealar is very short, the hind tibial 

 armature is different, and the wing veins are yellow. 

 Locality; Beulah, New Mexico, June 29, 1902. 



Hylemyia angustiventris sp. u. 



Male. — Black, slightly shining, densely gray pruinescent. Head black, 

 interfrontaUa, parafacials, and greater portion of cheeks reddish testaceous. 

 Tlioracic dorsum vnih three faintly indicated vittae, the median one most 

 distinct, lateral margins more distincth' pruinose than disc. Abdomen with 

 a shining, fuscous dorso-central vitta, which is of uniform width from base to 

 apex. Legs brownish black, the hind tilnae i)alcr. Wings clear. Calyptra 

 white. Halteres yellow. 



Eyes separated by not more than width of anterior ocellus; face concave in 

 profile, the parafacial much narrowed at lower angle of eye; antennae almost 

 as long as face, third joint less than one and one-half times as long as second; 

 arista hairy, the longest hairs a little longer than basal diameter of, arista; 

 cheek about one-fifth as high as eye, anterior angle distinctly but not greatly 

 produced, margin with short hairs and a few longer bristles, some of those 

 near anterior margin upwardly curved; vibrissa long, a few weak hairs above 

 it ; ])roboscis stout. Presutural acrostichals weak, one to two pairs in irregular 

 order; prealar bristle absent, only the usual bristles above fore coxae, and those 

 weak. Abdomen narrow, about three times as long as wide, fourth (visible) 

 segment longest; fourth sternite with three to five long downwardly directed 

 l)ristly hairs on each lateral margin; fifth sternite without abnormal bristling. 

 Fore tibia with two bristles, one antero-dorsal, and one postero-ventral ; fore 

 tarsus longer than fore tibia, but little compressed; mid femur with four to six 

 bristles on basal half of postero-ventral surface; mid tiliia with one anterior, one 

 postero-dorsal, and two postero-ventral bristles; hind femur with four to five 

 weak bristles on apical half of antero-ventral surface, the postero-ventral 

 surface unarmed; hind tibia with two antero-ventral, four to six antero- 

 dorsal, and three stronger postero-dorsal bristles, the posterior surface with a 

 few setulose hairs on basal half. Veins 3 and 4 convergent at apices; outer 

 crass-veins straight; costal thorn minute. Length, 4 mm. 



Type.— d"; Cloudcroft, New Mexico, June 18, 1902, [A. N. S. 

 No. G219]. Paratypes. — 1 cf , topotypical, June IG. 



This species resembles linearis Stein, but the latter has the 

 eyes separated by nearly the width across the posterior ocelli, 

 the prealar l^ristle more than half as long as the bristle behind it, 

 the costal thorn longer than inner cross-vein; the whole disc of 

 third sternite of al)domcn with long, bristly, downwardly directed 

 hairs, and the hind tibia with threi' long bristles on the antero- 

 dorsal surface. 



TKAXS. .\M. EXT. SOC, XLIV. 



