CEEATOMYIELLA AND PARADIDYMA REINHARD 17 



bristles about seven in number, descending below middle of second 

 antennal segment, uppermost pair reclinate, hardly larger than the 

 next preceding ones in the row; face moderately receding, rather 

 long and deeply excavated, its ridges not strongly divergent below, 

 bare except one or two bristles above vibrissae, which are situated 

 on the front edge of mouth ; antennae as long as face, basal segment 

 short, second wholly yellow, about one-fifth the length of third, 

 which is blackish beyond the narrow base; arista brown, thickened 

 on basal fourth, second segment short; parafacials gray pollinose, 

 bearing a row of strong bristles along the inner margin, those in 

 lower part of row larger than any of the f rontals, a few hairs extend- 

 ing outside the large bristles on the lower extremity; cheek about 

 two-fifths the eye height; palpi small, yellow, bearing two slender 

 black hairs near tip; labella pale yellow, fleshy; eyes bare; back of 

 head gray pollinose ; thinly clothed with pale hairs. 



Thorax and scutellum black, gray pollinose; mesonotum marked 

 with four narrow black stripes; chaetotaxy as in conica; postscutel- 

 lum normally developed ; inf rasquamal hairs absent ; calypters white. 



Abdomen black, subshining; the pollen gray, apparent on sides 

 of first segment, thicker on the basal margins of last three and ex- 

 tending rather thinly past the middle on each; first segment with 

 a weak pair of median marginals ; second with one pair (broken off, 

 scars indicating strong bristles) ; third and fourth each with a com- 

 plete marginal row ; no discals on anal segment. 



Legs black, basal segments reddish; claws and pulvilli elongate. 



Wings subhyaline; veins bare except third, which is setulose two- 

 thirds of the distance to small cross vein; last section of fifth vein 

 short; fourth vein with a broadly rounded bend, beyond slightly 

 concave to costa; apical cell open just before the extreme wing tip: 

 epaulets black ; costal spine developed. 



Length. — 8 mm. 



Female. — Unknown. 



r^/pe.— Male, U.S.N.M. no. 44759. 



Remarks. — Described from one male in the United States National 

 Museum from Hammonton, N.J., August 23, 1903; no collector's 

 label. 



Genus PARADIDYMA Brauer and Bergenstamm 



Paradidyma Bbaueii and Bergenstamm, Die Zweifliigler des kaiserlichen 

 Museums zu Wien, no. 5, p. 382, 1891; no. 6, p. 184, 1893. (Genotype, 

 Dldyma validinervis "Van der Wulp.) — Coquillett, Revision of the 

 Tachinidae of America, p. 126, 1897. — Aldrich, Catalogue of North Amer- 

 ican Diptera, p. 474, 1905. 



Atrophopoda Townsend, Trans. Amer. Ent. Soc, vol. 18, p. 373, 1891 [Geno- 

 type, A. singularis, new species (female only)]; Smithsonian Misc. Coll., 

 vol. 51, p. 66, 1908. 

 73007—34 2 



