THYCE AND POLYPHYLLA 319 



concave clypeus densely clothed with long, apically attenuate scales, 

 intermingled with moderate erect hairs; antennal club long, almost 

 as long as the entire stem; last palpal joint elongate-oval, with a 

 broad to moderately narrow, deep entire excavation and about three- 

 fourths as long as the club; prothorax nearly one-half wider than the 

 median length, the sides parallel in basal, converging in apical, half, 

 coarsely crenulate in basal half, rather reflexed basally, the angles 

 rounded; surface very shining, the punctures moderately coarse, 

 shallow and widely separated, a little closer but not at all dense 

 in the impressed median line; scales long, attenuate, sparse, broadly 

 closer laterally, without erect hairs except medially toward apex and 

 along the sides; scutellum densely squamulose; elytra rather closely 

 and moderately strongly punctato-rugulose, the scales well separ- 

 ated, closer laterally, apically and along the suture, three to nearly 

 four times as long as wide; pygidium obtusely triangular, convex, 

 densely squamulose, the scales smaller and narrower than those of 

 the elytra; abdomen closely albido-squamulose; hind tarsi slightly 

 shorter than the tibiae. Length 19.5-20.5 mm.; width 9.0-10.0 mm. 

 Three examples. 



Female a little broader posteriorly than in the male, the vestiture 

 sparser, the clypeus smaller, with the angles rounded as usual; head 

 posteriorly obtusely tumid; antennal club much shorter; last palpal 

 joint half as long as the club; front tibiae strongly bidentate; tarsi 

 and claws shorter and smaller. [After Fall, this sex not being re- 

 presented among my material.] 



California (about 50 miles to the eastward of San Diego), Rick- 

 seeker field! Fall 



Thoracic punctures irregular in distribution as usual but for the most part 

 close-set to dense 14 



14 Form stout, with more transverse prothorax than in fieldi and of 

 slightly larger size, pale red-brown in color, throughout, moderately 

 shining, the decumbent squamiform vestiture rather dense and pale 

 yellowish-white; head in form and vestiture nearly as in fieldi; 

 antennal club long, not quite as long as the stem, the maxillary palpi 

 missing in the type; prothorax fully one-half wider than long, formed 

 otherwise nearly as in the preceding, the punctures smaller, deeper, 

 much denser, separated generally by from half to twice their diameters 

 and coalescent broadly along the depressed median line, the scales 

 and erect hairs nearly as in fieldi; scutellum densely squamulose, the 

 punctures denser than in the preceding; elytra broader, about a 

 third longer than wide, fully two-fifths wider than the prothorax, 

 more closely punctato-rugulose than in fieldi, the scales a little 

 shorter, broader and everywhere denser; pygidium a little larger and 

 broader, more obtusely rounded at apex and with smaller but 

 similarly dense squamules; legs nearly similar. Length 22.0 mm.; 

 width I o.i mm. California. A single rather mutilated example 

 given me many years ago by the late J. J. Rivers, the label reading 

 simply "Southern California" simplicipes n. sp. 



Form stout but with the anterior parts relatively much smaller, red-brown, 

 the head and prothorax piceous-black; vestiture dense, pale ochreous- 



