THYCE AND POLYPHYLLA 311 



of the anterior tibiae short and obtuse though angulate. Length 

 (c?) 18.0 mm.; width 10.0 mm. California (Los Angeles). 



pistoria Csy. 



5 Last palpal joint not as long as the antennal club, though much more 

 than half as long; abdominal segments (9 ), except the last, closely 

 connate 6 



Last palpal joint distinctly longer than the antennal club; abdominal 

 segments ( 9 ) partially free 1 1 



6 Pygidium broadly, subcircularly rounded at apex. Form stout, con- 

 vex and subcylindric, slightly shining, pale red-brown, the head 

 and prothorax darker; vestiture pale ochreous-yellow; head with 

 very dense decumbent coarse hairs, more squamiform near the eyes, 

 the erect bristling hairs numerous; clypeus concave, finely, densely 

 punctate, densely clothed with rather long, decumbent and feebly 

 subsquamiform hairs, the angles obtuse though rather distinct, the 

 apex feebly arcuate, slightly sinuate medially; last palpal joint 

 five-sixths as long as the antennal club, with a very deep excavation 

 virtuallythroughout the length and very narrow apically, expanding 

 slightly basally; prothorax transverse as usual, the sides feebly 

 diverging and rather coarsely crenulate nearly to the middle, there 

 rather broadly rounded and thence converging and more feebly 

 serrulate to the feebly sinuate apex; base strongly lobed as usual, the 

 angles obtuse and distinctly rounded; surface not very finely, closely 

 but not confidently, deeply punctate, closely clothed with coarse and 

 decumbent but scarcely squamiform hairs, the erect finer hairs 

 unusually short, the vestiture obscurely trivittate; scutellum densely 

 clothed throughout with decumbent hairs, which are more squami- 

 form than those of the prothorax; elytra with the lateral impression 

 broad and shallow, extending slightly behind the middle, a third 

 longer than wide, a little more than a fourth wider than the prothorax, 

 finely, rather densely, subrugulosely punctate and with short and 

 rather dense, coarse and decumbent but scarcely squamiform hairs, 

 a little closer narrowly along the suture; pygidium somewhat small, 

 but little wider than long, very densely clothed with short decumbent 

 and narrowly squamiform hairs, the abdomen with less dense and 

 less squamiform hairs, which however become very dense along the 

 sides; hind tarsi about as long as the tibiae; first tooth of the anterior 

 tibiae acute and erect. Length (cf ) 21.0 mm.; width 9.6 mm. Cali- 

 fornia (Los Angeles Co.). A single example.. . rotundicauda n. sp. 



Pygidium angulate apically, the angle more or less rounded or narrowly 

 parabolic 7 



7 Elytral vestiture consisting of rather long, decumbent, very dense 

 coarse hairs, each hair feebly inflated basally and drawn out into a 

 long fine point distally. Body stout, convex, subcylindric, the dense 

 vestiture whitish, with only very pale yellowish tinge; head and 

 clypeus nearly as in the preceding, except that the clypeus is 

 broadly rounded laterally and around the angles, the apex feebly 

 arcuate; last palpal joint stonier and shorter, nearly as in blaisdelli, 

 three-fourths as long as the antennal club, the excavation very deep, 

 extending throughout the length and moderately narrow, scarcely 



