Vol. VII] GIFFARD— CALIFORNIA HEMIPTERA 307 



Vertex distinctly transverse, proportionately shorter than in costata; 

 carinae sharp, forming a somewhat acute angle before. Front broad, con- 

 vex in both diameters, scarcely wider below; the median carina slender 

 but evident. Clypeus convex, its median carina nearly obsolete except 

 at base, the lateral broad, horizontal. Pronotum about two-thirds the 

 length of the vertex, deeply angularly emarginate behind as in costata. 

 Mesonotum as in the allied forms, the lateral carinae approaching Ijut lit- 

 tle anteriorly. Elytra intermediate in length between the two species men- 

 tioned, the transverse costal nervures obscure beyond the stigma. 



Color fulvous-brown, polished, darker than in succinca; head, pro- 

 notum, patagias and legs paler fulvo-testaceous ; clypeus, pleural pieces and 

 legs pale fulvous; costal areole of the elytra white as far as the stigma; 

 nervures concolorous ; abdomen darker ; apical teeth of the hind tibise 

 and tarsi blackish as in succinca. 



Described from twelve examples representing both sexes, 

 taken on manzanita at Fallen Leaf Lake by Mr. Giffard on 

 August 21, 1916. This interesting addition to our fulgorid 

 fauna most closely resembles succinea but its shorter vertex, 

 smaller size, darker color and especially the white costa will 

 distinguish it. 



Holotype (No. 373), male, in collection of the California 

 Academy of Sciences. 



Allotype, female, in collection of Mr. Giffard. 



Paratypes in both collections and in that of the author. 



326. Catonia succinea Van D. Fallen Leaf Lake, August 

 21, 1916. This species seems to be most abundant in July. 



327. Oliarus hesperius, new species 



Very near aridus Ball but differing markedly in the male genitalia ; 

 black with pale carinas; disk of the mesonotum castaneous; front black 

 with pale carinae and a conspicuous white spot at apex of the frontal com- 

 partments either side of the base of the clypeus. Length 6-8 mm. 



Vertex nearly square, its length and breadth subequal, its transverse 

 carina obtusely angled or almost rounded, leaving a rather broad apical 

 compartment; front much expanded, its lateral angles rounded. Prono- 

 tum deeply, angularly emarginate; intermediate mesonotal carinae abbre- 

 viated before and behind. Elytral nervures strongly granulate and seti- 

 gerous, the outer sector forked a little behind the inner. 



Male pygofers shorter than in aridus, the ventral notch wide with its 

 sides diverging more than in that species, the lateral margins rounded 

 behind and wanting the large notch at the dorsal angle found in aridus; 

 dorsal surface not longer than the stiles, roundingiy narrowed to the 

 anal tube ; stiles narrow, parallel, contiguous, suljterete, their sagitate 

 apical expansions cut out so as to leave the lateral extensions similar to 

 the apical; in aridus this sagitate apex is broad-triangular with its apical 

 margin scarcely if at all excavated, the apex of the stiles being much sur- 

 passed by the elliptically produced dorsal surface. 



Color black or nearly so with the disk of the mesonotum castaneous 

 between the lateral carinae; carina of the head and pronotum slenderly 



