Oct.,i9i6 Bulletin of the Brooklyn Entomological Society 87 



third and fourth veins ending at equal distances before and behind apex 

 respectively; arista with short dense hairs; proboscis fleshy; scutellum not 

 longer than its basal breadth, not flattened. 



Type of genus, Oscinoides arpidia n. sp. 



Oscinoides arpidia n. sp. Female.- — Black and yellow, distinctly shining. 

 Head yellow, blackened on upper portion of frons and almost the entire 

 occiput; antennse yellow, third joint slightly brownish; arista brown; pro- 

 boscis and palpi yellow. Mesonotum yellow, with three black stripes which 

 are fused anteriorly and cover the entire disc except on the margins and 

 a central portion posteriorly, the latter having the appearance of an ante- 

 riorly bidentate spot ; a black spot above wing-base ; humeri and anterior 

 portion of pleurae yellow ; scutellum yellow ; postnotum black. Base and 

 venter of abdomen yellow, the remainder black. Legs yellow; apical joint 

 of midtarsi, entire hind tibice, and apical three joints of hind tarsi except 

 base of third black. Halteres yellow, knobs white. Wings hyaline, veins 

 brown. 



Frons broad, flat, triangle occupying nearly its whole area, the surface 

 with short hairs ; vertex with the bristles strong ; orbital hairs weak ; an- 

 tennae rather large, third joint rounded apically; arista about as long as 

 anterior width of frons, distinctly hairy; height of cheeks less than width 

 of frons, distinctly hairy; height of cheeks less than width of third an- 

 tennal joint. Thorax with moderately dense short hairs, one pair of pre- 

 scutellar bristles on disc, and the same laterals as in Gaurax. Abdomen 

 tapering at apex. Legs stout, the hind tibise more so than in species of 

 Gaurax, the sensory area distinct. Wings long and narrow; second costal 

 division (from end of first vein to end of second) nearly three times as 

 long as third; last section of fifth vein sHghtly longer than penultimate 

 section of fourth. 



Length, 3 mm. 



Type locality. Urbana, III, June i, 1916. One specimen taken by the 

 writer among low vegetation in the Forestry of the University of Illinois. 

 Paratype, Aberdeen, S. Dak., July 12 (coll. J. M. Aldrich). 



The species is dedicated to Mr. R. P. Dow in recognition of his 

 services to entomology in connection with the Bulletin of the 

 Brooklyn Entomological Society. 



A NEW MISCOGASTERID CHALCID FLY FROM MARYLAND. 



By a. a. Girault, Glenndale, Md. 

 From the woods, June 4, 1916. 



Miscogaster marilandica n. sp. Female. — Length 1.50 mm. 



iEneous black, the wings hyaline, the legs and antenna white, also the 



