OF WASHINGTON. 377 



parallel-sided, the lateral margins oblique, middle of the posterior sub- 

 margin with two small, approximate, faint fuscous dots, the surface 

 almost flat, but each side conspicuously set with stiff black short hairs. 

 Scutellnm feebly convex, pubescent, the middle line smooth, becoming 

 wider on the tip. Sternum green, paler on the pleural areas. Legs pale 

 yellowish-green, with the spines a little brown, and the nails piceous. 

 Wing-covers flat, long, opaque, clothed with remote, erect, blackish pu 

 bescence, the color dull greenish; the membrane long, faintly tinged with 

 fuliginous at base, and with the basal vein faintly brown. Venter green, 

 with the connexivum paler. 



Length to tip of venter, 2^ millim ; to tip of membrane, 3^ millim; 

 breadth of base of pronotum, about i millim. 



Three specimens were collected near American Fork, June 22. 



This is a delicate and flabby little insect, which can hardly be 

 compared with any other species known to me. It is remarkable 

 for the long, stout antenna?, which in some of the specimens are 

 discolored almost throughout. 



24. Atomoscelis seriatus Reuter. Ofvers. Kongl. Vetens.- 

 Akad. Forhandl., 1875, p. 91. 



Two specimens were secured near Great Salt Lake, June 13. 

 This neat little species is now known from various parts of the 

 South and West, and I have examined specimens from Maryland 

 and the District of Columbia. 



25. Atomoscelis pilosulus. New sp. 



White, opaque, with a faint greenish or yellowish tinge, narrower than 

 A. seriatus Reuter, the upper surface closely spread with white, silky pubes 

 cence which easily rubs off and leaves a polished surface. Head mod 

 erately convex, the face blunt, eyes pale brown, rostrum pale, piceous at 

 tip, reaching behind the posterior coxas. Antennae moderately stout, the 

 basal joint black, with a narrow whitish tip, the second blackish, some 

 what testaceous towards the tip, third and fourth fuscous, in one specimen 

 the apical half of the second joint is pale, and the two last joints are pale 

 testaceous. Pronotum transverse, feebly convex, scutellum nearly flat, 

 wing-covers long, flat, white ; the membrane opaque, milk-white. Legs 

 dull white, the knees, spines of tibise, and the fine dots at the origin of the 

 spines black. Beneath dull white, the venter sometimes tinged with green. 



Length to end of abdomen, if-2 millim ; to tip of membrane, 3-3^ mil 

 lim ; width of base of pronotum, about i millim. 



Several specimens were collected on Bigelovia near American 

 Fork, June 22. 



26. ^Orthotylus. New sp. 



One specimen was taken in the American Fork Canon, June 

 23, but it is not sufficient for description. 



27. Orthocephalus. New sp. 



