36 
TRANS..S. D. SoclETY NATURAL HISTORY 
pale fuscous, the knees, apex of the tibize and the hind tarsi paler. 
Abdominal segments edged with pale. 
Described from two examples; a male taken May 6th at 
Brooklyn Heights in San Diego and a female taken March 11th at 
Alpine; both from manzanita bushes. 
216.’ Catonia fusca Van D. Not uncommon on manzanita (Arc- 
tostaphylos bicolor) in the canyons east of San Diego and at 
Alpine, May and June. 
217. Catonia rubella Van D. Abundant with the preceding, May 
and June. 
218. Catonia costata Van D. Not uncommon on the rocky hill- 
sides at Lakeside, Foster and Alpine. April to June. 
219. Oliarus californicus n. sp. 
Allied to aridus but with more of the aspect of placitus; ely- 
tral maculation of the female forming a short oblique vitta a little 
beyond the stigma, pale spot on the sides of the front small. 
Length 7-8 mm. 
Vertex distinctly narrower and longer than in aridus, more 
parallel than in placitus. Front wider at base than in aridus, 
much wider than in placitus. Costal areole of the elytra wider. 
Male pygofers less deeply excavated than in aridus, the sides cut 
away obliquely to the dorsal angle, this edge slightly arcuated.. In 
aridus the sides of the notch are much more nearly parallel and 
the apex is strongly produced in an obtuse lobe ventrally, the 
edge retreating dorsally for about half its length; median plate 
of the female broader and shorter. 
Color black tinged with castaneous on the clypeus, med- 
ian carina of the front, and on those of the mesonotum; lateral 
carine of the front and of the vertex posteriorly whitish; carin 
and hind margin of the pronotum narrowly pale, sides of the front 
with a small pale spot next the clypeus. Margins of the pleural 
pieces and ventral segments more or less pale. Legs pale fuscuous, 
the knees, hind tibize and tarsi whitish. Elytra whitish hyaline 
nervures pale with black punctures armed with long black hairs; 
before the middle is an oblique row of four black spots placed on 
the forks of the nervures; the apical and subapical nervures and 
the stigma clouded with brown and there is an oblique fuscous 
vitta covering the second apical areole and continued forward near 
ly to the subapical transverse nervures. These markings may be 
much reduced or in the male quite absent. 
Described from many specimens of both sexes taken at most 
all places where I have collected in San Diego County, from May to 
October. This species is so close to aridus it is difficult to find 
good characters to distinguish it but they are obviously distinct. 
The form of the male pygofers, the small size of the pale spot on 
the sides of the front will best distinguish the males while the fe- 
male can be recognized by the small frontal spots and the macula- 
tions on the elytra. Placitus is a larger eastern form with narrow- 
er base to the front and a longitudinal fuscous vitta on the apical 
half of the elytra of the female; quinque-maculatus and vicarius 
