270 The Ohio Journal of Science [Vol. XX, No. 7, 



Limnophora tendipes sp. n. 



Male. Black, opaque, densely gray pruinescent, with a bluish or 

 greenish tinge on pleura and sides of abdomen. Back of head con- 

 colorous with thorax, the other parts densely silvery pruinescent. 

 Thorax indistinctly vittate, two narrow submedian vittse distinct 

 anteriorly. Abdomen with most of first tergite, two large subtriangular 

 spots on second and other two on third tergite, and a central one on 

 fourth blackish. Legs colored as body. Wings clear, darker at bases. 

 Calyptrse white. Halteres fuscous. 



Width of narrowest part of frons over twice as great as distance 

 across posterior ocelli; interfrontalia much wider than orbics, the latter 

 with long setulose hairs on entire length; parafacial twice as wide as 

 third antennal segment, and equal to height of cheek, the vibrissal angle 

 produced much beyond base of antenna, in line with outer side of apex 

 of third antennal segment, lower half of cheek hairy except anteriorly; 

 arista swollen on basal fourth, almost bare; vibrissal angle with numerous 

 setulose hairs, the vibrissse not differentiated, situated much above 

 lower margin of cheek; eyes with sparse fine hairs. Thorax with 4 

 series of fine presutural acrostichal hairs; postsutural dorsocentrals 4; 

 sternopleurals 2; prostemum bare. Legs long and slender; fore tibia 

 with one or two posterior median bristles, and a long apical posterior 

 bristle; mid femur with a series of posteroventral bristles which become 

 much shorter apically; mid tibia with one or two anterodorsal, two 

 posterodorsal, two posterior and one or two posteroventral bristles; 

 hind femur with long setulose hairs on basal half of posterior surface, and 

 four or five bristles on apical third of anteroventral ; hind tibia with 

 three or four fine bristles on each of the following surfaces; antero- 

 ventral, anterodorsal, and posterodorsal; hind tarsus with a bristle 

 near the base on ventral surface; apical tarsal segment on all legs broad. 

 First posterior cell much widened at apex. 



Length, 9 mtn. 



Type, Cordova, Alaska. One male. 



SUBFAMILY ANTHOMYIIN^. 



Hydrophoria galeata sp. n. 



Male. Black, slightly shining, thorax and abdomen with dense lead 

 gray pruinescence. Head with dense pale gray shining tomentiim on 

 orbits, parafacials and cheeks; antennse and palpi black. Thorax when 

 viewed from behind indistinctly vittate. Abdomen when viewed from 

 behind with an almost linear black dorsocentral vitta; hypopygium gray 

 pruinescent, forceps glossy black. Legs black. Wings clear. Calyptrae 

 white. Halteres yellow. 



Narrowest part of frons not wider than distance between posterior 

 ocelli; orbital hairs extending a little more than midway to anterior 

 ocellus; interfrontalia obhterated at middle; parafacial at base of 

 antenna wider than third antennal segment, but little narrowed below; 



