144 Annals Entomological Society of America [Vol. XV, 



of pronotum transverse instead of inclined posteriorly as in Deserta. 

 Carinae of scutellum sharply defined. Elytra brachypterous, irregularly 

 reticulate. Abdomen obese, oval. Rostrum equalling the abdomen. 

 Anterior femora expanded three times the width of the tibia ; post tibia 

 flattened, inclined to be serrate, the serrations crowned with 6-8 black 

 spines. 



This genus was described by Stal for 0. rhyparus from San 

 Francisco. Oshanin, 1913, in a review of the group evidently 

 misinterpreted the character of the genus as he describes 

 Orgeriiis as wanting a callosity behind the eye, while he erects 

 a new genus, Nymphorgerius, for species with short, angular 

 vertices and the eyes bearing posterior callosities. He mentions 

 a carina between the antenna and the eye, w^hich is lacking or 

 but feebly developed in our species and it is probable that the 

 true Orgeriiis does not occur in Europe. 



Key to the Species of Orgeriiis. 

 A. Size variable. Vertex narrow, one-half longer than its width; the hind 

 tibia distinctly flattened basally, the heavy spines appearing as serrations. 



0. rhyparus Stal. 



AA. Small, pale, vertex wider, less than one-half longer than its basal width. 



Posterior tibia not modified O. minor Ball 



Orgerius rhyparus Stal. 



Orgeriiis rhyparus Stal. Freg. Eugen. Resa. Ins., p. 274, 1859. 



A large, obese, globose species with a long, acutely angular vertex 

 extending one-half its length beyond the eye. Vertex long, parallel 

 margined or widening near the base, then acutely angular, the apex 

 slightly rounding, the lateral carinee strongly foliaceous. Face in profile 

 slightly dished, forming with the vertex an acute angle. Median tablet 

 narrow, parallel margined, about equalling the width of the eye. 



This species appears to be extremely variable in size and 

 color and is best characterized under its varieties. It was 

 described by Stal from specimens from San Francisco and has 

 been found to extend from Oregon to Mexico, west of the 

 Sierra Nevada range. The larvae appear in May and June, the 

 adults in June and July. They are found in bare places in dry, 

 exposed situations. 



Key to Varieties. 

 A. Large, obese forms, partly rufous or testaceous. 



B. Species entirely rufo-testaceous var. rhyparus Stal. 



BB. Rufous with elytra black clitellus n. var. 



AA. Without reddish shade.- 



C. Uniformly fuscous, size variable. 



D. Large, obese, females, 5 mm. or longer concordus n. var. 



DD. Small, females 4 mm. or less pajaronius n. var. 



CC. Uniformly pale or fuscous and pale, small ventosus n. var. 



