AMERICAN HYMENOPTERA. 99 



DESCRIPTIONS OF NEW HYMENOPTERA. 



BY E. T. CRESSON. 



Againa albipes, n. sp. 



S . — Uniform dark honey-yellow, clothed with a long thin pala 

 pubescence, more dense on abdomen ; sparsely punctured, metathorax 

 closely and rather coarsely reticulated ; mandibles pale, with black tips 

 and long hairs; palpi pale ; antennae yellowish-white, scape with long 

 hairs; wings pale yellowish-hyaline, marginal cell with a fuscous cloud, 

 rather narrow, about equal in length with the stigma, truncate at tip ; 

 second submarginal cell subtriangular, the third subquadrate, slightly 

 narrowed beneath ; legs entirely yellowish-white, clothed with a Ion"- 

 whitish pubescence; abdomen more or less tinged with fuscous, ovate, 

 petiolate, the petiole long, much swollen beyond the middle, strongly 

 and rather closely punctured, the apex strongly constricted. Lenrnh 

 5 — Ss lines. 



Three S specimens. Nevada. 

 Stizns nevadeiisis, n. sp. 



S . — Black ; middle oi face, clypeus, labrum, mandibles except 

 tips, anterior orbits ending in two dots within the ocelli, tubercles, 

 narrow posterior margin of prothorax, sometimes narrow line over 

 tegulae and a band or two spots on seutellum, both sometimes wanting, 

 yellow; base of antennsK ferruginous; tegulate dull honey-yellow, with 

 a yellow spot anteriorly ; thorax with a very short, dense, changeable 

 pile; wings pale yellowish-fuscous, marginal cell darker, costa more 

 deeply tinged with yellow; legs ferruginous, sometimes more or less 

 black at base, anterior femora beneath, four anterior tibise exteriorly, 

 and base of posterior tibia;, yellow; abdomen shining, pale yellow 

 above, base of first segment, and basal and apical margin of all the 

 segments narrowly black; on each side of first segment anteriorly an 

 oblique, generally bifurcate black mark; anterior margin of second 

 segment more or less undulate, and on each side anteriorly a rounded 

 black spot; a short, oblique, black line on each side of second and 

 third, and sometimes fourth, segments posteriorly; the yellow band on 

 fifth, and sometimes fourth, d(!eply indented with black on each side 

 anteriorly; six segment with large, transverse, yellow mark; apical 

 segment black, tipped with ) iruginous, the anal spiiij rather lono- 



