594 TERTIARY INSEGTS OF NORTU AMERICA. 



and are equal in length to the tarsi. The wings show most of the neura- 

 tioii. The auxiliary vein terminates on the costa before the middle of the 

 wing opposite the transverse median vein. The radius terminates some 

 distance and the cubitus slightly before the tip of the wing. The upper 

 discoidal vein forks about one-quarter way to the margin, and the lonA'er 

 diseoidal before the origin of the u^jper discoidal vein. 



Length of bod}^ 3.5"""; of wings, 2.5"""; breadth of same, 1.1°""; length 

 of hind tibiw, 1.5"™. 



Green Rivei-, Wyoming. One specimen. No. 37 (Prof. L. A. Lee). 



BOLETINA PALUDIVAGA. 

 PI. 10, Fig. 7. 



The venation is not correctly drawn, the auxiliary vein which reaches 

 nearly to the middle of the wing not being shown; the radius should curve 

 upward at the middle of the wing and be connected with the cubital just 

 previous to this curve ; the stalk of the upper discoidal vein is short. The 

 legs are moderately stout but long, densely clothed with delicate hairs, the 

 tibiae with long apical thorns. 



Length of body, 2.5"'"'; of wings, 2.2;">"""; of tarsi, 1.35"'"'. 



Green River, Wyoming. Two specimens, Nos. 5, 40 (Dr. A. S. 



Packard). 



SACKENIA Scudder. 



Sackenia SciiiM., linll. U. S. Geo]. Geogr. Sniv; Terr., Ill, 753-754 (1877). 



Bod}' shaped much as in Boletina. Antenn.i? longei- than the thorax, 

 one-fourth slenderer at tlie apex than near the base, gently curved, 2-(- 14- 

 jointed. Legs very long and slender; femora and tibiaj of about equal 

 length; tarsi a little longer than the tibise; the hind tibise and tarsi together 

 a little longer than the abdomen ; the tibiae with one or two apical spurs 

 beneath and spined throughout. Wings rather broad ovate; the smaller veins 

 at the extreme base obliterated in the specimen examined ; auxiliary vein ter- 

 minating on the costa be3"ond the end of the basal third, the first longitudi- 

 nal vein in the middle of the outer half; the second longitudinal vein is 

 unusually curved downward at the tip, so as almost to reach the apex of 

 the wing ; the united third and fourth longitudinal veins part from the sec- 

 ond very near the base of the wing or within the small transverse vein ; 



