40 TRANS. S. D. Society NATURAL HISTORY 
226. Oececleus decens Stal. The species which I have so determined 
is not uncommon back from the coast from May to August. 
It differs from the eastern borealis in being larger and in 
having a somewhat different male genitalia. The color is 
darker than described by Stal but we find the same range 
of color in a number of allied Cixiine. I prefer to place this 
form under decens until comparison with Mexican mater- 
ial is possible. 
227. Ocecleus venosus Van D. Several examples taken along the 
San Diego river at Lakeside and back of the sand dunes at 
Ocean Beach, all in May 1913. 
Genus Oeclidius n. gen. 
Vertex narrow as in Oecleus but widest at base and not at apex 
as in that genus. Front very narrow, concave, uniformly widening 
from the base to the clypeus, the carinate margins well elevated; 
median carina and apical ocellus wanting, the position of the lat- 
ter sometimes indicated by a dark point. Clypeus slender, tri- 
carinate. Pronotum narrow, angularly emarginate behind, with 
median keel and concentric anterior carina behind the eyes. Me- 
sonotum tricarinate. Basal joint of the antennz longer than 
wide, papillose. Hind tibiz simple. Eyes notched beneath. Ely- 
tra short and broad, vitreous, the two claval veins straight, united 
before the middle, at tip reaching the commissure by a hook some 
distance from the apex; costal area very broad and expanded near 
the base; outer sector forked near its base and both opposite the 
apex of the clavus where they are united by strong transverse veins 
forming five anteapical areoles of which the inner and third are 
small and triangular. Middle apical areole elongate, oblong, in- 
terior to which are five (two stylate) and exterior four, their 
three veins springing from the side of the long median areole. All 
the nervures distinct, impunctate. 
This genus differs from Oecleus in having the vertex narrower 
before, in the narrower ecarinate front the papillose basal joint of 
the antenne, the angularly emarginate pronotum and the elytral 
venation. It bears some resemblance to Micrixia Fowler but can at 
once be distinguished by the narrower vertex and front and differ- 
ent elytral venation. It bears a superficial resemblance to Brixvia 
but has not the elongated second joint of the antennz found in 
that genus. 
228. O6cclidius nanus n. sp. 
Closely resembling Oecleus tenellus Fowler, which doubtless 
pertains to this genus, but smaller. Length to the tip of the closed 
elytra 3144 mm. 
Vertex attaining the front line of the eyes, the base of the 
frontal carine only projecting; deep black, the carinze white, hind 
margin of the eyes flavous. Front and clypeus testaceous, the 
strong lateral carine of the front paler; ocelli black. Rostrum 
reaching the last ventral segment, infuscated at apex. Pronotum 
white with the disk behind the eyes black. Mesonotum black, the 
