THYCE AND POLYPHYLLA 313 



not concealing the sculpture, the clypeus shorter, more rounded at 

 the sides and angles, the vertex tubercularly elevated medially, the 

 antennal club very much shorter, oval, the last palpal joint small, 

 oval, pointed, two-thirds as long as the club and with a deep ex- 

 cavation extending from base to apical fifth; prothorax nearly similar 

 in form but smaller in size, with nearly similar close-set punctures 

 but entirely clothed loosely with long fine erect hairs, the decum- 

 bent hairs extremely short, fine and inconspicuous; scutellum with 

 coarser decumbent and erect pubescence than the pronotum; 

 elytra widest at the middle, nearly three-fifths wider than the 

 prothorax, almost similar in the sparse rugulose sculpture and 

 punctulation, but with the decumbent hairs slender, fuscous and 

 minute, not in the least concealing the integument, the pygidium 

 and abdomen with minute, stouter, closer and whiter decumbent 

 hairs than the elytra; anterior tibiae more strongly tridentate than 

 in the male as usual; middle and hind tarsi much shorter, the claws 

 smaller, subsimilarly but less strongly toothed. Length 20.0-22.0 

 mm.; width 10.0-10.7 mm. Two examples. 



California (San Diego) blaisdelli Csy. 



A Female nearly similar to the female of blaisdelli but larger and 

 broader in form, almost exactly similar in coloration, lustre and 

 very minute sparse vestiture, which is however everywhere still 

 more minute; median elevation of the vertex larger and stronger; 

 antennal club a little longer and narrower; the last palpal joint 

 narrower, straighter at the sides, gradually pointed almost from 

 the base, three-fourths as long as the club, with short bristling 

 hairs throughout, which are twice as numerous as in blaisdelli, 

 the excavation extending from base to apical fourth, gradually 

 attenuated; prothorax larger and broader, with nearly similar 

 irregularly distributed punctures and still shorter minute ves- 

 titure and erect hairs, the more sparsely punctate area near the 

 sides behind the middle even more developed; elytra broader, 

 rather less rugulose, the decumbent hairs still more minute and 

 inconspicuous; other characters nearly similar. Length 26.0 mm. ; 

 width 12. o mm. California (Los Angeles Co.). .nitidula n. subsp. 

 Vestiture finer and closer, very dense, whitish in color; integuments more 

 obscure red-brown, the head and prothorax dark brown; head and 

 clypeus nearly as in the preceding and almost similarly clothed; last 

 palpal joint rather narrow and elongate, fully four-fifths as long as 

 the antennal club, the very deep excavation narrow and extending 

 its entire length, the acute apex slightly bent downward as usual; 

 prothorax of the usual transverse form and outline, the slightly 

 converging sides behind the middle unusually coarsely crenulate, 

 the hind angles rounded; surface strongly, densely punctate, the 

 prostrate hairs thickened, with the usual three condensations, the 

 erect hairs numerous and rather long; scutellum very densely, 

 decumbently squamulo-pubescent; elytra oblong, rapidly obtuse 

 at apex, a fourth longer than wide and not quite one-half wider than 

 the prothorax, the very short decumbent subsquamiform pubescence 

 very dense, still denser along the suture, the lateral impression 



