﻿Sept. 1895] COQUILLETT. NeW TACHINlD.li. 103 



the basal articulation not half as long as height of head ; palpi well developed, cla- 

 vate. Third vein bristly nearly to the small crossvein, the others bare ; hind cross- 

 vein nearly midway between the small and the bend, the latter rectangular and bear- 

 ing a long appendage ; posterior end of hind crossvein almost opposite the small ; 

 apical cell open, ending nearly midway between the second vein and extreme tip of 

 wing. Type, the following species : 



Metaplagia occidentalis, sp. nov. 



^ — Black, the first two antennal joints and the palpi yellow. Front at vertex 

 nearly twice as wide as either eye, two pairs of orbital bristles, arista thickened to 

 the tip, which is pointed. Thorax gray poUinose, marked with four black vittae ; 

 three postsutural and three sternopleural macrochsetse, scutellum bearing three long 

 marginal pairs. Abdomen subshining, bases of last three segments whitish polli- 

 nose; second segment bearing a marginal pair of macrochii^tre, third with a marginal 

 row, the fourth with a submarginal and a marginal row. Wings hyaline, costal 

 spine minute, calypteres white. Front claws and pulvilli much longer than the last 

 tarsal joint, hind tibi;T2 not ciliate. Length 7 mm. 



San Diego Co., Cal. A single specimen, captured by the writer. 

 Araba tergata, sp. nov. 



^ — Black, including the palpi. Front wholly silvery pollinose, at vertex 

 slightly wider than either eye, frontal bristles descending to middle of second anten- 

 nal joint, near the middle the two rows are separated from each other fully eight 

 times as far as from the nearest eye, two pairs of orbital bristles ; sides of face sil- 

 very, bearing short bristly hairs, ridges bristly nearly their entire length ; antennae 

 nearly as long as the face, the third joint five times as long as the second ; arista 

 thickened almost to the tip, the penultimate joint not longer than wide ; cheeks 

 nearly one-fourth as broad as the eye-height ; proboscis short, fleshy, palpi clavate. 

 Thorax opaque, black in middle of front part to behind the suture, the remainder 

 light gray pollinose ; three postsutural and two sternopleural macrochc-ette, scutellum 

 bearing two long marginal pairs. Abdomen whitish pollinose on bases of last three 

 segments and hind angles of the first; second segment with a marginal pair of ma- 

 crochistoe, the third and fourth each with a marginal row. Wings hyaline, third 

 vein bearing three bristles at its base, the others bare, costal spine minute ; calypteres 

 white. Claws and pulvilli scarcely one- third as long as the last tarsal joint. 



9 — Differs from the ^ as follows: Frontal vitta yellowish brown, sides of 

 front grayish pollinose, the two rows of frontal bristles near the middle separated 

 from each other from four times to less than twice as far as from the nearest eye. 

 Thorax yellowish gray pollinose, marked with four black vittre. Abdomen grayish 

 pollinose, first three segments each marked with a posterior row of three black 

 spots, sometimes more or less united, the fourth black on the apex. Length 4 to 

 6 mm. 



Northern Illinois (August 2 and 16, 1894; Dr. W. A. Nason), 

 and Los Angeles Co., Cal., in July, captured by the writer. Two 

 males and two females. 



