OF WASHINGTON. VOLUME XIV, 1912. 199 



SYNOPSIS OF GENUS CRYPTOMEIGENIA B. & B. 



1 . Dorsal vittse of thorax distinct velvety black 2 



Dorsal vittse of thorax indistinct brownish, pollen of front and 



face gray theutis, Walk. 



2. Legs except tarsi yellow. Second and fourth longitudinal veins 



yellowish setifacies B. & B. 



Legs black, wing veins black, front and sides of face golden 



yellow aurifacies n. sp. 



Cryptomeigenia aurifacies, new species. 



Length 3 to 10 mm. Eyes apparently bare, but microscopically haired, 

 frontal vitta opaque, dark brown, somewhat lighter approaching root of 

 antennae; sides of front golden yellow pollinose extending narrowly up- 

 ward around sides of ocellar triangle and connecting with the posterior 

 orbits, which are also yellow pollinose. Sides of face golden yellow polli- 

 nose, barely connecting beneath the eyes with the yellow of posterior 

 orbit. Anterior two-thirds of parafacials with fine, black, bristly hairs. 

 Facial ridges when viewed from side, brown and haired on lower one- 

 fourth only. Cheeks, facial depression, and epistoma grayish pollinose. 

 First two segments of antennae reddish and abundantly haired on upper 

 surfaces, third joint slender, gently rounded at tip, black. Arista about 

 twice the length of third joint, thickened on basal one-fourth, microscop- 

 ically pubescent for a little more than one-half its length, black. 



Thorax, pleurae, and pectus, including coxae, grayish pollinose, slightly 

 yellowish gray at humeri and in supra-alar region. Thoracic vittae four, 

 velvety black; the inner pair slender anteriorly, entire, thickened posteri- 

 orly beyond the suture, ceasing about midway between suture and an- 

 terior edge of scutellum, the outer abruptly thickened anteriorly and in- 

 terrupted at suture extending backward to a point immediately above 

 center of postalar callus. 1 Post-dorso-central bristles three, sternopleural 

 bristles three, the lowest of which is in the male often quite weak. Scutel- 

 lum with two marginal and a long apical pair and many rather coarse 

 hairs on the disk. Abdomen somewhat conical, silvery-gray pollinose; 

 when viewed from the rear the posterior margins of segments 1 to 3 broadly, 

 and a narrow median vitta, slightly shining, black. Fourth segment al- 

 most entirely gray pollinose. Segments, 1 with marginal and 2, 3, and 4 

 with discal and marginal macrochaetse. Tip of ovipositor in female exserted, 

 acute, and pointing forward. 



Wings hyaline, veins black; posterior cross-vein sinuous. 



Squamae translucent, yellowish white. Trochanters and extreme apices 

 of femora reddish, remainder of legs and tarsi black. 



1 In viewing marking of thorax and abdomen in Tachinidae one should 

 always look at them from the rear at a vertical angle of about 45, the 

 markings appearing most intense at this angle. 



