IIQ CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Se«. 



clavus, except at base and apex, fuscous ; corium with a large 

 fuscous cloud on the inner angle, which, at the middle, has an 

 extension toward the costa; cuneus pale. Membrane well in- 

 fuscated, the nervures pale except at their base. Beneath and 

 legs pale, more or less tinged with green, the apex of the tarsi 

 black. 



Male much darker; head above, basal joint of the antennae, 

 pronotum, clavus, membrane and most of the lower surface 

 black ; the black color on the corium more extended and occu- 

 pying fully one-half the surface; first antennal joint black; 

 second, brown, yellowish at base ; third and fourth, fuscous. 



Dextral hook of the male genitalia black, broad and strap- 

 like, transverse, a little widened at base, its blunt apex incurved, 

 almost reaching the sinistral wall; sinistral hook straight, ap- 

 parently terete, not thicker than the second antennal joint, sur- 

 passing the apex of the ventral surface of the genital segment. 



Described from five males and eight females. Of these I 

 took two females at Salamanca, N. Y., July 20, 1911, and one 

 at Buffalo, N. Y., August 4, 1901. Mrs. Annie Trumbull Slos- 

 son has sent me three females taken at Delaware Water Gap, 

 Pa., and from Mr. H. H. Knight I have received three males 

 and two females taken at Honeoye Falls, N. Y., July 1, 1915, 

 and two males taken at Batavia, N. Y., July 10, 1914. 



Type, female, in collection of author. Allotype, male, in 

 collection of H. H. Knight. Paratypes in collections of H. H. 

 Knight, Mrs. A. T. Slosson, Museum of California Academy 

 of Sciences (No. 318) and in author's collection. 



19. Orthotylus dorsalis Provancher. 



Elongated with the elytra nearly parallel ; black ; head, at 

 least the occiput, sides and median vitta, usually, of the pro- 

 notum, broad costal margin, lower surface excepting a broad 

 lateral vitta, legs and the antennae of the female, pale or green- 

 ish. Length 5-5 J/2 mm. to tip of membrane. 



Head almost vertical. Eyes prominent, especially in the 

 male ; viewed from the side oval, little longer than broad ; 

 reaching below the middle of the head. Vertex narrowly flat- 

 tened and a little excavated before the basal carina; in the male 

 but little broader than the eye, about twice as broad in the fe- 



