180 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



with 6 or more short posterodorsal and posteroventral bristles; 

 hind femur with a series of anteroventral bristles ; hind tibia 

 straight, with a distinct production at apex ventrally, the antero- 

 dorsal and posterodorsal surfaces with a number of short bristles, 

 the anteroventral surface with a few short setulae. Costal thorn 

 minute. 



Holotype, No. 814, Mus. Calif. Acad. Sci. ; collected by G. 



Dallas Hanna, June 21, 1920. 



Type locality, St. Paul Island, Alaska. 



The species described as Qphyra grcenlandica by Ludbeck 

 was afterwards removed to Pogonomyia by Stein, but Belongs 

 to this genus. Pogonomyia segnis Holmgren, may be the same 

 as my Pogonomyioides atrata, in which case the species name 

 atrata will be replaced by that of Holmgren. 



4. Melanochelia sanctipauli Malloch, new species 



Male : Length 5-6 mm. Black, subopaque, densely pale gray 

 pruinescent. Thorax with three brown vittse. Abdomen with 

 basal tergite largely black, second and third each with a pair of 

 large subtriangular black spots which are narrowly separated 

 in middle, fourth with a less distinct subtriangular central spot. 

 Legs black. Wings slightly infuscated basally, veins black. 

 Calyptrse yellow. Halteres fuscous. 



Eyes bare, separated by a little more than width across 

 posterior ocelli ; orbits very wide, almost obliterating interfrontalia 

 at middle, with fine setulose hairs to anterior ocellus ; parafacial 

 at base of antennae about as wide as third antennal segment ; 

 vibrissal angle produced much beyond a vertical line drawn from 

 base of antennae ; arista with very short pubescence. Hairs on 

 area in front of suture and between dorsocentral bristles erect, 

 sparse, in four or more irregular series ; postsutural dorsocentrals 

 4. Abdomen subcylindrical ; fifth sternite with a deep V-shaped 

 posterior incision. Legs with the fine hairs longer than usual ; 

 mid-femur with some bristles on basal half of posteroventral 

 surface ; mid-tibia with one or two anterodorsal and two or three 

 posterodorsal bristles; hind femur with a series of anteroventral 

 bristles; hind tibia with two or three anterodorsal and anter- 

 oventral bristles, and a few erect posterior setulose hairs. Veins 

 3 and 4 divergent apically. Lower calyptra much larger than 

 upper. 



Female : Differs from the male in having the irons over one- 

 third of the head-width. Genitalia without thorns. Fore tibia 

 with a weak median posterior bristle. 



