

122 



lieiglit, yibrissie sliglitly above the level of frout edge of oral 

 margin, five or six bristles above each; anteniuie five-sixths as 

 long as tlie face, the tbird joint one and tliree-fourtbs times as 

 long as the second, arista thickened on the basal two-fifths, the 

 pennltimate joint as broad as long, palpi linear, proboscis rigid, 

 ^/t*i>T,-<t'4L.*^ labella small but distinct ; thorax gray polliiiose, marked with 

 five black vitta', scutellnm bearing five pairs of marginal macro- 

 chiiette; abdomen gray jjollinose except the apices of the last 

 three segments, first segment bearing marginal, the following 

 two with discal and marginal macrochfeta^; middle tibi;e each 

 bearing two or more on the front side near the middle, hind 

 tibife outwardly subciliate, front pulvilli longer than the last 

 tarsal joint; wings hyaline, third vein bearing three bristles at 

 the base, fourth vein rounded at the bend, beyond which it is 

 nearly straight until a short distance before its apex, where it 

 is strongly arcuate; calypteres white, margined with yellow; 

 length, 13 mm. Blue Mountains, Washington. A single male 

 specimen, collected July 15, 1896, by Prof. 0. V. Piper. Type 

 No. 3627, U. S. National Museum . ,. piperi n. sp. 



J^ Genus PARAPHYTO Coq. 



Paraphijio Coquillett, .Journal N. Y. Ent. Soc, Vol. Ill, p. 105; Sept., 1895. 



1. First two segments of abdomen destitute of dorsal macrochtetse, 

 scutellum bearing three marginal pairs, three postsuturals and 

 two steruopleurals, third vein bristly about halfway to the 



"TvA-small crossvein ....... ^.. . . — ^^.^ .. . 3, .-, ^^J-^M-J. . .<.2. . 



First two segments bearing dorsaljj-he second and third with discal c^ 

 and marginal macrochfeta?, scutellum bearing five marginal 

 pairs, four postsuturals and three steruopleurals, third vein 

 ^ ^^^ . bristly on the ba«al eighth before the small crossvein, abdomen 

 subshining, thinly whitish pollinose, destitute of distinct black 

 spots; black, including the palpi, the face and cheeks largely 

 reddish; length, 13 mm. Laggan, Brit. Amer. (Can. Entomolo- 

 gist, Vol. XXIV, p. 68; March, 1892: Trira.) gillettei Town. 



2. Abdomen subshining, thinly ^ray pollinose, destitute of distinct 

 n _ black spots; black, tbe first two joints of antenn.e, facial depres- 



cf^^^'lCir^-v^Cu. , i^Um, and palpi yellow ; abdomen sometimes largely brownish-red; 



•/■ ' '' -'^y^ length, 11 to 13 mm. Ithaca, X. Y., and Agricultural College, 



^ ^' Michigan. (Journal X. Y. Ent. Soc, Vol. Ill, p. 105; Sept., 



1895.) chittendeni Coq. 



Abdomen opaque gray pollinose, marked with three rows of shining 

 black spots; black, the first two joints of antenna^, facial dei)res- 

 sion, and palpi yellow; front of female one and one-fourth times 

 as wide as either eye, two pairs of orbital bristles, frontal bris- 

 tles not descending below base of antennsTP, sides of face at nar- 

 rowest part each two-fifths as wide as the facial depression. 



