12 TRANS. S. D. SocieTY NATURAL HISTORY 
Dam in October 1913. The most interesting character of this in- 
sect is its remarkable color adaption, harmonizing exactly with 
that of the bark on which it rests. 
97. Macrocephalus cimicoides Swed. Alpine, June; one example 
taken on the dry granite hill sides. 
Family REDUVIIDAE 
98. Ploiariola californica Baker. San Diego and Coronado, June 
and July. 
99. Ploaria californiensis Baker. Mussey’s, August; one example. 
100. Oncocephalus nubilus n. sp. 
Most nearly allied to cincticrus Reut. from Africa. Basal joint 
of the antennze bald above; testaceous with a dorsal fuscous cloud. 
Length 18 mm. 
Head normal, unarmed beneath; anteocular portion equal to 
the postocular and eyes together; post-ocular portion gibbous and 
abruptly narrowed behind, strongly elevated about the ocelli; arm- 
ed beneath on either side behind the eyes with three porrect stiff 
bristles and there are about three on the tubercular antennal sockets. 
Basal joint of the antennz thickened toward the apex, bald above, 
below and on either side armed with long stiff bristle-like hairs as 
is the entire second joint, these becoming shorter toward the apex; 
second joint one half longer than the first; third shorter than the 
first. Rostrum with the first joint sub-equal to the second, the ap- 
ical only fuscous. Pronotum unarmed on the disk and humeri, the 
anterior angles with a blunt tubercle; disk with the two median 
caring distinct, the humeri prominent, sharply right-angled; sides 
obtusely carinate; prosternal tubercles short and blunt. Scutellar 
spine long as in geniculatus and the characters of the legs and 
elytra as in that species. 
Color pale testaceous; a broad dorsal fuscous cloud is nar- 
rowed to a point at the anterior margin of the pronotum and is 
deepened almost to black on the posterior disk of the pronotum, 
covers the scutellum except the pale apical spine and its basal car- 
ina, and is dispersed over the elytra where it omits the broad base 
of the costa and becomes obscurely dotted with pale posteriorly. 
Eyes, tumid base of the head, its lower surface and a line behind 
the antenne, black. Antennez infuscated with the incisures and 
hairs paler. Legs marked as in geniculatus; femora fuscous at 
apex, the posterior with a broad median annulus; tibiae with the 
base and apex and a median annulus fuscous, the annulus on the 
posterior displaced to near the base. Margins of the connexivum 
with a black line near the base of each segment. 
Described from a single male taken by Prof. F. H. Snow on 
the San Bernardino Ranch, Cochise County, Arizona in August, at 
an altitude of 3750 feet. What I believe to be the immature female 
of this species occurred in numbers with its dark fuscous larve 
all over, with the dorsal fuscous cloud less defined, and the elytra 
nymphs differ in being darker and more or less clouded with brown 
under stones on the adobe lands at Alpine, April 22, 1913. These 
