76 THE UNIVERSITY SCIENCE BULLETIN. 



and with the pronotum opaque, black and closely minutely sericeous 

 pubescent. Elytra with a somewhat longer pubescence ; deep black becom- 

 ing velvety black toward the apex of the corium and on the tip of the 

 clavus; corium with a square whitish spot resting on the costa and a 

 double one close to the apex; usually there is a small white point on the 

 middle of the corium, one at the inner apical angle and another near the 

 tip of the clavus. Membrane strongly differentiated, whitish hyaline, a 

 little enfumed, the nervures strong, brown; the areoles with a brown sub- 

 apical mark and sometimes another near the base. Beneath and legs 

 black, the knees, tibise except at base and apex and the tarsi, their tips 

 excepted, pallid. In the female the apex of the abdomen and sometimes 

 the slender hind margins of the ventral segments are pale. 



"Described from three males and two females taken along the San 

 Diego river at Lakeside, May 7, 1913, and from a moist ravine at Alpine 

 in June. Dr. J. C. Bradley also took this species at Sisson, Cal., in August, 

 1908. The species can be easily recognized by its small size, intensely 

 black color, the strongly distinguished membrane and the four white 

 marginal spots on the elytra." — Van Duzee. 



Genus lOSCYTUS Reuter 1912. 



"Body oblong. Head subvertical, gula rather brief. Eyes distinctly 

 distant from pronotum, exserted, anteriorly moderately convergent. Part 

 of vertex bearing ocelli slightly elevated. Apex of rostrum reaching inter- 

 mediate coxae. Antennse incrassate, shortly thickly pubescent, sparsely 

 pilose. First segment rather long. Hemelytra laterally little rounded, 

 destitute of white markings. Interior veins of corium obsolete. Embolium 

 entirely distinct from corium. Membrane furnished with four areas. 

 First or internal base produced before the proximal about one-quarter its 

 length. Apex distinctly placed above apex of second. Third segment of 

 posterior tarsi as long as second. Type Salda polita." 



loscytus j)olitns Uhler 1877. 



Uhler, Bui. U. S. G. G. Surv., Ill, p. 441, 1877. 



"Elliptical, highly polished, jet-black, very indistinctly punctate; the 

 whole upper surface set with erect, remote, brown hairs. Head from 

 above short, vertical in front and a little decurving, dull black, densely 

 and irregularly scabrous and rugulose, the raised margin of the clypeus 

 and the tylus ferruginous or pale piceous. Rostrum pale piceous, reach- 

 ing between the intermediate cox^; base of vertex a little convex, formed 

 into a distinct neck, contracted on the occiput; eyes very prominent, 

 brown, placed obliquely. Antennae setulose, moderately long, stout, the 

 two apical joints about as stout as the basal one; basal joint short, 

 blackish-piceous, paler above; second joint much shorter than the two 

 apical ones united, pale piceous or dull yellow; two apical joints dusky 

 black, subfusiform, subequal in length, but much longer than the basal 

 one. Pronotum subtrapezoidal, transverse, short, highly polished; the 

 callosities forming the anterior lobe very convex, not reaching the sides, 

 with a large, indented point in the center ; the posterior lobe much shorter, 

 arched, higher than the anterior one, deeply concave, the humeral angles 

 long, broad, and flat, subtruncated, with an oblong tubercle near the outer 

 angle; the impressed line around the callosities very deep-seated, punc- 

 tate; lateral submargins broadly flattened, rugulose, the edge recurved, 

 decurving anteriorly. Pleural pieces dull black, obsoletely and minutely 

 punctate; the prosternum very short, scarcely covering the base of the 

 cox«. Coxas black; femora dull yellow or ferruginous, the under side of 

 the anterior pair piceous; tibise dull yellow, their tips, the tarsi, and nails 

 piceous. Scutellum moderately convex, obsoletely scabrous at base; the 

 apical portion a little less prominent than the base, and the depression 

 between them shallow; the surface faintly rugulose. Hemelytra flat, 

 ferruginous, the clavus dusky black, and the costal area jet-black, polished, 



