332 CALIFORNIA ACADEMY OF SCIENCES tPnoc. 4th Ser. 



coxal cavities yellowish testaceous, the middle of the femora and tibiae 

 broadly brown ; disk of the ventral segments and marginal incisures 

 obscurely paler. Fifth ventral segment a little longer at median line than 

 at sides, the hind margin straight across the middle ; sixth segment as long 

 as fifth and twice longer than the first genital segment which in turn is 

 twice longer than the second; the apical lobes transverse, very feebly 

 sinuated at apex. 



Described from one female taken by me at the northern end 

 of Fallen Leaf Lake, Eldorado Co., Cal, June 25, 1915. This 

 species, while most closely related to duzeei much resembles 

 behrensi but the antennae are longer, the scutellum longer and 

 narrower, the pronotum broadest behind the middle with the 

 median pair of carinae nearly parallel, the rostrum longer and 

 the humeral expansions and apex of the scutellum conspicuously 

 yellowish. Aradus fuscomaculatus Stal has about the same 

 form of scutellum but it has the antennae a little shorter, the 

 pronotum broadest at the middle and marked with pale, the 

 elytra and abdomen more strongly maculated and the apical 

 plates of the female more oblique. 



Holotype, female (No. 679) in collection of the California 

 Academy of Sciences. 



2. Aradus pannosus, new species 



Very near fuscomaculatus Stal, the antennae shorter and 

 thicker with the apex of the second segment whitish, the valves 

 of the second female genital segment longer and subacute at 

 apex and the genital lobes of the female narrower and more 

 angled when viewed from below. Length 6^ mm. 



Female : Head a little longer than broad ; antenniferous tubercles obtuse, 

 scarcely attaining the tip of the first antennal segment. Antennae a little 

 shorter than basal width of pronotum; stout; second segment tapering to 

 base, as long as III and IV together; III thickest, hardly one fourth longer 

 than wide; IV shorter and narrower than III, oval, conical at tip which is 

 not conspicuously cinereous. Rostrum attaining basal one fourth of meso- 

 sternum. Pronotum a little over twice wider than long, the expanded 

 sides more rounded than in fuscomaculatus, with five or six larger teeth 

 anterior to the widest point ; carinae prominent, the median pair outwardly 

 arcuate on posterior lobe. Scutellum about one fifth longer than wide; 

 sides straight and strongly elevated. Elytra a little shorter than in the 

 allied species. Valves of second genital segment longer and more pointed 

 than in fuscomaculatus where they are distinctly rounded at apex; the 

 genital lobes viewed from beneath narrower and more angled at apex. 



Color blackish fuscous ; posterior edge of humeral lobes, extreme tip of 

 scutellum, apex of second antennal segment and annulations of femora 

 and tibiae whitish; abdomen variegated with dull reddish fulvous, about 



