44 TRANS. S. D. SOCIETY NATURAL HISTORY 
apical margin of the corium; cauda lanceolate, extending beyond 
the tip of the clavus for three or four times its width at that 
point. 
Color dull yellowish or testaceous brown varied with darker 
or fuscous; base of the front darker, a broad brown vitta extends 
from near the apex of the vertex to the tip of the mesonotum, 
sometimes including a pale median line. Generally the elytra are 
darker above with a fuscous cloud on the base of the clavus and 
about three along the middle of the corium, and there are two 
rows of brown points toward the costa. Cauda fuscous with a 
pale mark behind the apex of the clavus. Abdomen fuscous with 
the edges of the segments paler. Tip of the rostrum black. Whole 
insect more or less pruinose at times. 
Described from numerous examples swept from wild sunflow- 
ers at La Jolla, Calif., in August, 1913. Very distinct by its broad 
valvate elytra abruptly produced in a short tail at apex. 
242. Lamenia californica Van D. Taken on willows at Lakeside 
and Musseys, May to August. 
243. Megamelus marginatus Van D. Coronado, June. 
244, Pissonotus marginatus Van D. San Diego, December. One 
male with black femora and tibie. 
245. Pissonotus delicatus Van D. April to June. Swept from a 
fine grass growing on low spots. This species was described 
from a pale female; they are mostly darker. 
246. Pissonotus frontalis Crawf. Seven examples which seem 
to be correctly referred here were taken on grass growing 
along water courses from San Diego to Alpine. They dif- 
fer from aphidioides in being a little smaller, in having the 
frontal carina forked on a line with the lower angle of the 
eyes, the branches parallel, closely approximate and obscure 
over the apex of the head; antennez black beneath, apex of 
the front narrowly pale. The styles of the male are not 
“spatulate” but are transverse at apex as figured by Mr. 
Crawford, with their inner angles acute and black. This 
genus is quite distinct from Dicranotropis. 
247. Stobaera tricarinata Say. Common, throughout the year. 
248. Stobaera concinna Stal. Grossmont, in low lands near the 
flume. May. Crawford unites this species, affinis and 
minuta with tricarinata but they are quite distinct. 
249. Stobaera minuta Osb. Alpine and Torrey Pines, May and 
June. In these the orange dorsal vitta is conspicuous. 
250. Stobaera bilobata n. sp. 
Much smaller than tricarinata with the elytra fuscous marked 
with a bilobate costal area. Length 114 to 2 mm.; macropterous 
234, mm to tip of the elytra. 
Head narrower than in tricarinata; fove of the vertex deep; 
front narrow, much constricted above, the sides slightly concavely 
arcuated. Lateral carinze of the pronotum strongly arcuated, at- 
