Dec, 1920 Bulletin of the Brooklyn Entomological Society 127 



key I have not removed it to Stein's genus, which may really be 

 entitled to generic rank. 



Pegomyia littoralis n. sp. 



Male — Entirely black, shining. Abdominal dorsocentral vitta 

 linear. Wings slightly infuscated. Calyptrae white, Hal- 

 teres yellow. 



Frons as wide as distance across posterior ocelli ; arista pu- 

 bescent. Thorax with two or three pairs of presutural acros- 

 tichal bristles ; prealar small. Abdomen tapered to apex, de- 

 pressed ; h3'popygium small ; fifth sternite with short processes 

 which are rounded at apices, have a few long hairs at bases of 

 processes and are almost bare beyond. Hind femora with ir- 

 regular bristles on anteroventral surface and some bristles on 

 basal half of posteroventral ; hind tibia with one anteroventral, 

 two anterodorsal, and two posterodorsal bristles. Wings 

 slightly pointed, first posterior cell narrowed at apex. Length, 

 4.5-5 mm. 



Type, Mt. Cadillac, Mt. Desert, Me., July 25, 1919. Para- 

 types, three males. Bar Harbor, Me., July 21-22, 1919 (C. W. 

 Johnson). 



A female which appears to belong to this species has the frons 

 reddish anteriorly, one third of the head-width, and with a pair 

 of cruciate interfrontal bristles. 



Locality, Fogo Island, New FVundlan_d, July 29. 



Pegomyia slossonae n. sp. 



Male — Similar in general color and habitus to littoralis, but 

 with pale gray pruinescence, and a much broader dorsocentral 

 abdominal vitta. 



Frons barely wider than anterior ocellus, the orbits silvery, 

 Prealar absent. Fifth sternite with the inner margins of the 

 processes widely divergent apically, no long hairs at bases of 

 the processes. Otherwise as littoralis. Length, 5 mm. 

 Type, Mt. Washington, N. H., 2,500 feet, June 14, 1916 (C. 



W. Johnson). 



Named in honor of Mrs. A. T. Slosson who has done so much 

 collecting in the region where the type was taken. 



