IV MONTHLY PROCEEDINGS 



tegulse polished ; metathorax above with fine ilen:<e Icmgitudiiial suboblique stria- 

 tions; the apical middle ou the verge of the truncation somewhat smooth and 

 slightly produced, the truncation closely punctured, with a deep shining fovea on 

 upper middle,. sides of metathorax rugulose; wings hyaline, with a fuscous cloud 

 covering the marginal and submarginal cells and faintly the discoidal cells, nerv- 

 ures and stigma black, apex of marginal cell obliquely truncate, the appendiculate 

 nerve short, not reaching the margin of the wing : legs black with griseous pubes- 

 cence; abdomen shining, first segment finely punctured, thickly clothed, especially 

 at sides, with rather long pale pubescence, second segment at base very minutely 

 punctured ; venter sliining, sparsely clothed with a blackish pubescence. Length 

 .45 — .55 inch. 



Hub. — Washinjitou Territory ; (Morrison ). Closely allied to % uni- 

 color 8ay, which however has the metathorax coarsely reticulated above 

 and the wings hyaline. 



Aetata nigropilosa.— 9 .—Deep black, shining, clothed with black pubes- 

 cence; face finely and rather closely punctured; mesothorax and scutellum smooth 

 and polished, with a few scattered punctures, the former clothed with black 

 pubescence on anterior inargin and with a shallow depressed line over the tegulae ; 

 metathorax above rather finely reticiilated, more coarsely so on the sides, apex 

 rugose, with a deep shining fovea on upper middle; pleura finely punctured, 

 pubescent; tegulse rufo-piceous ; wings uniformly fuscous, with a darker streak 

 at tip of marginal cell, nervures and stigma black, marginal cell broadly and 

 obliquely truncate at tip, the ajipendiculate nervure very short, third submarginal 

 cell slightly narrowed towards the marginal, posterior wings much paler than 

 the anterior; tarsi more or less brown at tips; abdomen smooth and polished, 

 impuuctured. Length .35 — .45 inch. 



Var. 9 • — Wings subhyaline, the anterior pair broadly fuliginous at tip: the first 

 dorsal segment of abdomen except base, the second entirely, above and beneath, 

 and the lateral and apical margin of the third, ferruginous. Length .35 inch. 



% • — Mesothorax finely punctured, the anterior middle depressed ; apex of meta- 

 thorax above depressed and somewhat produced ; tegulpe black ; anterior wings hya- 

 line at base : abdomen rather less shining and more puliescent. Lengtli .45 — .50 inch. 



Hah. — Colorado ; Nevada ; (Morrison). 



Astata csertllea. — % . — Steel-blue, shining, cdothed with bla('k pubescence; 

 face finely punctured; mandibles and antennaj black, tips of the former reddish; 

 mesothorax sjmrsely, feebly punctured, somewhat depressed anteriorly and with 

 a finely impressed longitudinal line on each side over tegulfe ; scutellum smooth 

 and shining, with a medial impression ; metathorax opaque, coriaceous, the apex 

 above somewhat jaroduced and with a broad rather deep depression; the sides 

 and apical truncation finely rugulose ; pleura finely punctured ; tegul£e piceous ; 

 anterior wings fuscous, the nervures and stigma black, marginal cell short and 

 broad, the apex broadly truncate, the appendiculate nervure indistinct, but con- 

 tinued to the margin of the wing, third submarginal narrow, rounded beneath 

 and narrowed above towards marginal, the first submarginal longer than the 

 second and third together, posterior wings hyaline; legs black, the coxse and 

 femora tinged with blue; abdomen shining, impunctured. Length .35 inch. 



Hah. — Nevada; (Morrison). Readily distingiiished by the steel-blue 

 color. 



