130 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



Leria pleuralis, new species. 



Near defcssa, but the hairs of the cheeks are in a single row, the mes- 

 opleura posterior to the anterior notopleural bristle is wholly densely 

 haired, etc. Head yellowish, the ocellar triangle and upper part of the 

 occiput black; antennae and palpi reddish yellow, proboscis brownish; 

 only one vibrissa each side. Body black, slaty-gray pruinose, abdomen 

 of male largely or wholly yellowish, mesonotum not vittate; pteropleura 

 bare, mesopleura without bristles, sternopleura densely haired and with 

 a single bristle. Legs yellowish, apices of tarsi brown. Halteres yellow. 

 Wings hyaline, slightly yellowish at the base. 



Length, nearly 4 mm. 



Alaska, and Beulah, New iMexico (May 3, 1902, T. D. A. 1 

 Cockerell). Three specimens. 



Type: No. 13099, U. S. National Museum. 



Leria nuda, new species. 



One vibrissa each side, cheeks with a single row of hairs near the lower 

 edge, mesopleura bare, except on the upper hind corner, which bears a 

 bristle and several hairs, pteropleura bare, sternopleura with two bris- 

 tles and a few hairs. Head yellowish, upper part of the occiput black, 

 gray pruinose; antennas and palpi yellow, proboscis yellowish brown. 

 Body black, yellowish-gray pruinose, the mesonotum not vittate. Legs 

 and halteres yellow. Wings hyaline, the veins yellow. 



Length, 3 mm. 



Claremont, California (C. F. Baker), and Santa Fe, New 

 Mexico (July, T D. A. Cockerell). Two females. 

 Tvpe: No. 13100, U. S. National Museum. 



Leria genalis, new species. 



One vibrissa each side, cheeks with a single row of hairs near the 

 lower edge, mesopleura without bristles, bare except on the lower hind 

 corner, which bears several hairs, sternopleura rather thickly haired and 

 with one bristle, pteropleura bare. Head yellowish, the ocellar tri- 

 angle and upper part of the occiput black; antenna; reddish yellow, the 

 third joint, except basally, brown; palpi yellow, proboscis yellowish 

 brown. Body black, bluish-gray pruinose, mesonotum marked with 

 five indistinct brown vittas. Legs yellow, apices of tarsi brown. Hal- 

 teres yellow. Wings hyaline, tinged with yellow basally and in the 

 subcostal cell. 



Length, nearly 5 mm. 



Kaslo, British Columbia. A female specimen collected by 

 Dr. H. G. Dyar. 



Type: No. 13104, U. S. National Museum. 



