I 



No.iiiso. NEW NORTH AMERICAN DTPTERA—COQUILLETr. 107 



times as lon^»' as the second, arista thiclvened on the basal four-fifths, 

 the penultimate joint nearly half as long as the last one; thorax gray 

 pruinose, three pairs of postsutural dorsocentral bristles, two sterno- 

 pleurals, scutellum bearing four marginal pairs, the second and fourth 

 ^'ery small; abdomen polished, narrow bases of last three segments 

 whitish pruinose, second segment bearing a discal pair and marginal 

 row of bristles, third with a discal and a marginal row, fourth with 

 three rows; tarsi not dilated; wings hyaline, the l)ase tinged with 

 yellow, third vein bearing a bristle near the base, hind crossvein 

 slightly nearer small crossvein than bend of fourth vein, calypteres 

 whitish; length, -i mm. A female specimen collected August 4, 1896, 

 by Prof. C. A. Sheldon. 



Hal) if I it. — Oswego, New York. 



7//yA. Cat. No. 620-t, U.8.N.M. 



This European genus has not heretofore been reported from this 

 country; in the table of genera given in my Revision of the Tachinid^e 

 it would fall in with ClausiceUa., from which it will be distinguished 

 by the bristly facial ridges. 



CH^TOPHLEPS POLITA, new species. 



Black, including the palpi; vertex three-fourths as wide as either 

 eye, no orbital bristles, frontals descending slightly below the arista, 

 facial ridges ciliate nearly to lowest frontals, face in profile very con- 

 vex, the sides below very narrow, about one-eighth as wide as the very 

 large, subtriangular facial depression, antennte almost as long as the 

 face, the large third joint about six times as long as the second, arista 

 thickened nearly to the middle, the penultimate joint slightly longer 

 than broad, sides of front and face grajash pruinose, proboscis short 

 and robust; mesonotum polished, three vittse in front of the suture 

 and the sides whitish pruinose, three pairs of postsutural dorsocentral 

 bristles, two sternopleurals, scutellum bearing three long marginal 

 pairs, the last pair diverging; abdomen polished, each segment bearing 

 marginal, the last three also with short discal macrochiette; front claws 

 and pulvilli very short, hind tibiie not ciliate; wings hyaline, first vein 

 bearing three bristles on the apical third, the third bearing five near 

 base, extending halfway to the small crossvein, hind crossvein mid- 

 wa}" ])etween the small and the bend of the fourth, the latter arcuated, 

 calypteres whitish; length, 3.5 mm. A male specimen collected by 

 Prof. J. M. Aldrich. 



Hcibltat. — Brookings, South Dakota. 



Type.—Q^i. No. 6205, U.S.N.M. 



PELATACHINA LIMATA, new species. 



Difiers from my description of />cV/^^r/V^(!^ as follows: Face yellowish 

 gray pruinose, thorax marked with four black vittie, abdomen pol- 



^ Revision of the Tachinida', ij. 65. 



