278 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



156. Macrotylus intermedius, new species 



Smaller than essigi, more greenish in color and more suffused with 

 blackish. Length 3j^ mm. 



General characters of essigi. Greenish yellow. Head clearer yellow, 

 clypeus narrowly fuscous, the bucculae whitish. Disk of the pronotum in- 

 fuscated behind the black callosities and marked with fuscous dots at the 

 base of the black hairs with which the surface is clothed and with an 

 obscurely paler median line. Basal area of the scutellum with a yel- 

 low mark on either side. Clavus as in lincolatus, not entirely black, 

 dotted with fuscous ; corium' sparsely dotted with black, especially on its 

 posterior disk; costal nervure, a narro.w longitudinal median vitta and the 

 hind edge blackish. In essigi the corium is yellow with a slender costal 

 line and the broad apex black and the disk with black hairs which do not 

 spring from black dots as they do in intermedius and lineolaius. Cuneus 

 immaculate except for an obscurely blackish costal line. Membrane as in 

 essigi, deeply infuscated. with the nervures yellow and a white mark next 

 to the apex" of the cuneus followed by a blackish ray. In lineolatus the 

 membrane is less deeply infuscated, leaving the black ray more conspicu- 

 ous. Legs obscure greenish lineate with fuscous and with the usual pale 

 dots at the apex of the femora as in both allied forms. Antennae black 

 or nearly so, with the base of the second and third segments very nar- 

 rowly pale. 



Described from two male and three female examples taken 

 by Mr. Giffard in San Mateo Co., June 20, 1917. This may 

 prove to be a color variety of essigi. 



Holotype (No. 350), male, in collection of the California 

 Academy of Sciences. 



Allotype, female, in collection of Mr. Giffard. 



Paratypes in both collections. 



157. Macrotylus lincolatus Uhl. Santa Cruz Co., 1200 feet, 

 June 8, 1917; Tallac, August 22, 1916. 



158. Reuteroscopus falcatus, new species 



Whitish or tinged with fulvous ; eyes, clypeus, two spots on the pro- 

 notum and a row of marks on the pleurae and sides of the venter black. 

 Length 4 mm. 



Head shorter and more vertical than in oniafus. Vertex smooth, but 

 slightly convex ; clypeus narrow, prominent ; facial angle less than a right 

 angle. Antennae about as in ornatus; first segment exceeding the clypeus 

 by one-fourth its length; second stout, not thinner than the first, in the 

 male nearly as long as the basal width of the pronotum, in the female 

 shorter; third and fourth together as long as the second; third one-fourth 

 longer than the fourth. Pronotum shorter than in ornatus; moderately 

 convex, the anterior angles well rounded, sides regularly arcuated, hind 

 margin very feebly excavated ; callosities subcontiguous. Tumid base of 

 the scutellam well exposed ; apical lobe almost flat. Elytra oblong, nearly 

 flat, the costa but feebly arcuated ; abdomen of the male attaining the 

 apex of the cuneus, of the female reaching to apical one-fourth of the 

 membrane. Genital segment of the male large, convex, occupying two- 

 fifths of the length of the abdomen, moderately compressed but scarcely 

 carinate ; the genital characters rather obscure. 



