46 TRANS. S. D. Society NATURAL HISTORY 
a median wedge-shaped black vitta with its point on the base of 
the clypeus, superiorly nearly attaining the antennal ledges and 
bisected by a pale median line; clypeus pale, black at apex. Anten- 
nz black, becoming pale at apex. Rostrum pale, black at apex. 
Pronotum with the hind margin broadly and the sides slenderly 
obscure castaneous-brown; two approximate points near the hind 
margin and a larger one in the depressed submarginal area on 
either side castaneous. Metanotum with the center of the cruci- 
form callous and a mark at each of its four extremities pale or 
castaneous. Tergum with a small pruinose spot on either side of | 
the third segment; genital segment pruinose. Elytral nervures pale 
or castaneous slenderly edged with black; costal nervure black. 
Beneath and legs pale; disk of the pleural pieces, upper surfaces of | 
the coxee and femora, a spot on the base and apex of the tibiz, tar- — 
sal claws and the connexivum black, the edges of the connexival 
segments pale. The pale color on the lower surface may be more 
or less tinged with fulvous or castaneous. Basal nervures of the 
second and third apical areoles of the elytra with a conspicuous 
fuscous spot. 
Described from seven male examples taken in Mission Val- | 
ley on the hillside opposite the city of San Diego, July 9th 
1913. This species makes an unusually loud crackling noise which 
is often repeated and well sustained, but the insect was very active © 
and difficult to capture, especially as its home was among the cac- 
tus on the steepest part of the hill. 
I have a Mexican Proarna, perhaps maura, which is very near , 
this but it is larger with the pale markings above more extended, 
the antenne are pale, the rostrum black with the basal joint only | 
pale, the legs and venter mostly fuscous and the genital characters 
are different. In both species the colors beneath are much ob- 
scured by an abundance of white pruinescence. 
255. Okanagana vanduzei Dist. Taken in the back country only; ; 
Sweetwater Valley, June 19th, 1913; Alpine, June 8th and | 
July 4th, 1913. I have found only the males. One of these | 
was singing in the mouth of its hole and beneath it was a ) 
cottony mass which did not contain eggs and the nature of , 
which I have been unable to make out. This species had a 
loud, shrill and continued note. 
256. Okanagana vanduzei var. consobrina Dist. Abundant every- + 
where along the coast and extending up the valleys for a \ 
mile or two and at San Juan Capistrano at least five miles; » 
May 22nd to July 25th. This species has a shrill thin con- 34 
tinued note and is not difficult to locate. Like the preceding | 
it sings within its hole but near the surface of the ground. 
Ordinarily however it rests on grass or weeds near the 
ground while the preceding is found on the chaparral. 
257. Okanagana californica Dist. Taken from Eriogonum and 
Artemesia bushes growing on the adobe lands at Alpine, 
June 21st to July 4th, 1913. It is a slighter and much more : 
clearly marked species than the foregoing. 
