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



Pegomyia lativittata sp. n. 



Male. Black, slightly shining, densely gray pruinescent. Orbits 

 and cheeks with silvery pruinescence ; antennse, arista, and palpi black. 

 Thorax similar to that of lysinoe Walker, with a very broad black vitta 

 behind suture on each side of dorsum and two linear submedian vittse 

 anteriorly. Abdomen with a uniform broad black dorsocentral vitta, 

 and the posterior margin of each tergite black; hypopygium shining 

 black, very slightly pruinescent. Legs reddish testaceous, coxae, fore 

 legs and all tarsi black, fore femora slightly paler than tibiae, mid and 

 hind tibise slightly darker than their femora. Wings slightly brownish, 

 yellow at bases. Calyptrae and halteres yellow. 



Narrowest part of frons barely wider than anterior ocellus; inter- 

 frontalia obliterated above middle; bristles confined to anterior half 

 of orbits; antennae elongate, third segment about twice as long as 

 second; arista almost bare; parafacial at base of antenna as wide as 

 third antennal segment; cheek a little higher than widest part of para- 

 facial, with a series of bristles on lower margin. Three pairs of pre- 

 sutural acrostichals, between which there are four or more series of weak 

 hairs; prealar nearly as long as the bristle behind it; sternopleurals 

 1 : 2. Abdomen slightly depressed, the bristles on apices of tergites long; 

 hypopygium small; fifth stemite almost bare on inner margins of pro- 

 cesses and without strong bristles. Fore tibia with one anterodorsal 

 and two posteroventral bristles, the apical posterior bristle strong; 

 fore tarsus much longer than tibia; mid femur with one bristle beyond 

 middle and three on basal half of anterior surface, one beyond middle 

 of anteroventral and a series of about eight on posteroventral surface; 

 mid tibia with one anterodorsal, one posterodorsal, and two or three 

 posterior bristles; hind femur with a series of bristles on anteroventral 

 and four or five on middle half of posteroventral surface ; hind tibia with 

 one anteroventral, two anterodorsal, and two posterodorsal bristles. 

 Lower calyptra not protruded. 



Length, S mm. 



Type, Savonoski, Naknek Lake, Alaska, July, 1919. One 

 male. 



Pegomyia jacobi sp. n. 



Male. Black, slightly shining, densely gray pruinescent. Head 

 black, the orbits and cheeks with silvery pruinescence. Thorax with 

 the sides of dorsmii more conspicuously pruinescent than disc ; two linear 

 vittas apparent on anterior margin. Abdomen with a rather broad 

 subinterrupted inconspicuous black dorsocentral yitta, the bases of the 

 bristles set in black dots, fifth sternite with the processes glossy black. 

 Legs reddish testaceous, coxae, femora except their apices, and the tarsi 

 black. Wings clear, yellow at bases. Calyptrae and halteres yellow. 



Narrowest part of frons as wide as distance across posterior ocelli; 

 interfrontalia not obHterated ; orbits bristled on entire length ; parafacial 

 at base of antenna as wide as third antennal segment, narrowed below;. 



