334 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Sbr. 



Color blackish fuscous ; apex of first antennal segment and base of 

 III indistinctly paler, as is also the edge of the bucculae, lower surface 

 of antenniferous tubercles and tip of first segment of rostrum; expanded 

 sides of pronotum pale ; elytral venation mostly pale, the membrane with a 

 whitish spot at base, the veins pale and margined with whitish ; disk of 

 connexival segments varied with pale rufo-fulvous, their hind margins 

 more conspicuously pale ; the venter quite largely varied with dull rufo- 

 fulvous ; tips of the tibiae pale. At least a portion of the granulations are 

 pale, including a few on the legs and antennae. 



Described from 10 male and 14 female examples taken at 

 Huntington Lake, Fresno Co., Cal., July 7 to 22, 1919, at an 

 altitude of 7-8,000 feet. These were all taken under loose 

 bark of old stumps and logs of lodge-pole pine. It affords me 

 pleasure to name this interesting addition to our fauna for 

 Dr. F. E. Blaisdell of San Francisco, well known for his 

 work on the Eleodini and other groups of the Coleoptera, as 

 a token of friendship and in recognition of his enthusiasm in 

 the pursuit of his favorite study and of his kind and prompt 

 response to all appeals for assistance in the increase and im- 

 provement of the Academy's collection of insects. This species 

 pertains to the group embracing debilis, hubbardi and inor- 

 atus; the thicker antennae will distinguish it from the former 

 two and the more oblique latero-anterior margins of the pro- 

 notum and variegated membrane from the latter. 



Holotype, male (No. 681) and allotype, female (No. 682) 

 and paratypes in collection of the California Academy of 

 Sciences. 



4. Aradus vadosus, new species 



Closely allied to debilis Uhler but with unicolorous an- 

 tennae, shorter rostrum and more oblique pronotal margins. 

 Length 10 mm. 



Female : Head little longer than broad across the eyes, the apical 

 process twice longer than its greatest width ; spines of the antenniferous 

 process terete, subacute, attaining the apical one fourth of the first seg- 

 ment, its base armed with a distinct tubercle ; preocular tubercle large ; 

 middle of vertex with a double row of coarse tubercles, these rows 

 diverging at apex ; lateral depressions deep, narrow, parallel. Antennae 

 almost as long as the head and pronotum together; segment II distinctly 

 longer than median line of pronotum, slender, but slightly clavate at apex ; 

 III and IV subequal, the latter thickest of all, widened to base of the 

 conical apex; all segments finely granulate without distinct apical teeth. 

 Rostrum attaining apical third of mesosternum, the basal segment much 

 shorter than the head. Pronotum two and a third times as wide as its 

 median length ; finely granulate, the sides broadly expanded and upturned, 

 coarsely and irregularly crenate; the latero-anterior margins rectilinear 



