34 PKOCEEDINGS OF THE NATIONAL, MUSEUM vol. 69 



than width of face; mesonotum very dark aeneous, clothed with 

 short, appressed, pale pile, with rather numerous and long black 

 hairs intermixed chiefly posteriorly; scutellum as the mesonotum, 

 the marginal hairs unusually long, black; upper posterior corner of 

 mesopleura and upper pteropleura with coarse black hairs, remain- 

 ing pleural pile white; fore basitarsus with long pale apical hair; 

 group of black spines on ventral surface near base; femora black, 

 four fore tibiae an tarsi brown ; hind legs nearly entirely black, tips 

 of tibia dark brown ; femora moderately enlarged and with rudimen- 

 tary apical process on inner ventral surface; second tergite with pair 

 of shining aeneous spots; third with pair of yellow spots tinged 

 with dark aeneous; first tergite with pale pile, remaining tergites 

 with pale pile on anterior corners, black medianly and posteriorly; 

 wings faintly smoky; cliscal cross vein joining discal cell little beyond 

 middle ; posterior cross vein subequal to upper outer section of discal 

 cell ; squamae white ; halteres yellowish ; length 9 mm. ; wing 8 mm. 



Type locality. — Naknek, Alaska (J. Hine) ; Anchorage, Alaska, 

 June 16, 1921 (J. M. Aldrich). 



Type. — In collection of J. S. Hine, Columbus, Ohio. 



Holotype male; paratype male. 



This species is related to the ejuncida group. The black mesonotal 

 pile and black hairs on the pleurae and abdominal markings dis- 

 tinguish it. 



XYLOTA NAKNEK ATLANTICA, new variety 



Xylota hesperia atlantica Shannon, nomen nudum, Fauna of New England, 

 vol. 15, 1925, p. 176. 



Two male specimens, Bar Harbor, Maine (C. W. Johnson), and 

 Franconia, New Hampshire, agree with the specimens from Alaska 

 in practically all details. They differ by having the third antennal 

 joint longer than broad, while it is as broad as long in Alaskan 

 specimens. 



Type. — In collection Boston Society Natural History. 



Paratype.— C^t. No. 27743, U.S.N.:M. 



XYLOTA RAINIERI, new species 



Male. — Ocelli set nearly their altitude from hind-eye margin; 

 frontal triangle pollinose except small anterior area; antennae yel- 

 lowish brown, third joint subquadrate; arista somewhat lighter, dis- 

 iinctly shorter than w'dth of face; mesonotum with dark blue and 

 greenish icfleetions, pile mostly pale with sparse, rather long, black 

 hairs intermixed posteriorly; pleurae with white and some yellow- 

 uih pile; fore basitarsus without long pale hair at apex; ventral 

 basal spines present; spur of average size; second tergite with fairly 



