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



Head broad and short, its width across the eyes three fourths that of the 

 basal margin of the pronotum; nearly vertical, the face below somewhat 

 inferior ; its apex, viewed from the side, broad and square ; produced below 

 the eye for a distance almost equal to the length of the eye ; clypeus flattish, 

 poorly distinguished, its basal suture indistinct but obvious, on a line dis- 

 tinctly above the base of the antennas ; gula wanting. Rostrum attaining 

 the hind coxae ; basal segment expanded reaching the base of the head. 

 Antennae short ; basal segment about reaching apex of clypeus ; second 

 equal to the width of the head across the eyes ; third about two thirds of 

 second; fourth one half the third. Pronotum short and broad, feebly 

 convex ; sides but little oblique, feebly arcuated ; hind margin straight : 

 callosities indistinct. Basal field of scutellum covered. Elytra short and 

 broad; costa distinctly arcuated. Hind femora broad and much flattened; 

 third segment of hind tarsi scarcely longer than the second. Male genital 

 characters obscure, the sinistral clasper small and transverse. 



Color obscure testaceous-white, sometimes tinged with yellow or green, 

 especially on the head and abdomen. Antennae becoming infuscated on 

 their apical half; Femora with a few large scattering brown dots toward 

 their apex, more apparent on the hind pair and less conspicuous in the 

 male, these dots tending to form a line near the lower margin. Tibiae 

 white, armed with large conspicuous black spines set in black dots. Eyes, 

 apex of the tarsi and of the rostrum black. Oviduct of female more or 

 less infuscated. Lower surface of male sometimes infuscated. Upper sur- 

 face clothed with closely set silvery scale-like deciduous hairs, intermixed 

 on the elytra with longer fuscous ones. Membrane immaculate. 



Described from 10 male and 14 female examples taken on 

 Atriplex at Coachella, Palm Springs and Soboba Springs, 

 Calif., May 13, to June 2, 1917. Among our pale species sparsa 

 may be distinguished by the stout black tibial spines and the 

 sparse coarse dotting of the femora. 



Holotype (No. 438), male, allotype (No. 439), female, 

 and paratypes in collection of the California Academy of 

 Sciences. 



38. Catonia helenae, new species 



Form and size of majiisculus ; cinereous varied with fuscous 

 and croceus ; front with an interrupted black band at base and 

 an indefinite area at apex ; length 7-8 mm. 



Vertex nearly square, a little wider posteriorly ; carinse prominent ; an- 

 terior margin feebly rounded, passage to the front abrupt ; basal margin 

 scarcely angled. Front narrow, much wider at apex ; sides straight ; carinse 

 prominent; clypeus more convex with conspicuous carinae. Elytra long and 

 parallel ; venation distinct ; stigma about twice longer than wide and 

 crossed at its basal third by an oblique suture, the margin beyond with 

 three small areoles. Lateral plates of the female genital segment short, 

 transverse, their hind edge feebly sinuated and their inner angle obtuse. 

 Plates of the male lanceolate-triangular, acute at apex, their inner basal 

 angles approaching, exteriorly fringed with short pale hairs ; median valve 

 produced in a long slender tooth which attains the middle of the plates. 



Color soiled yellowish testaceous, tinged with fulvous on the front, 

 mesonotum and elytral nervures. Fovae of the vertex and pronotum in- 



