452 CASEY 



in lateral fifth, where the surface becomes rugose but not longi- 

 tudinally wavy and with moderately coarse, well separated punc- 

 tures, each of which is very strongly carinato-tuberculose exter- 

 nally ; elytra fully one-half wider than the prothorax and about six 

 times as long as its median line, sculptured nearly as in veiitri- 

 coszis ; abdomen sparsely but strongly pimctato-muricate, polished. 

 Length 7.5-8.0 mm. ; width 5.3-5.6 mm. Arizona (Tempe), — 

 Warren Knaus orbus n. sp. 



Form slightly less rotund and more elliptical, similar in color and lustre, 

 the erect vestiture sparse, shorter, yellowish-cinereous and with- 

 out trace of serial ari'angement; head subequal in width to an 

 elytron, smooth and very sparsely but distinctly punctate, the an- 

 tennae dark rufous, fulvo-pubescent apically, the apical joints 

 elongate-triangular (c^) ; prothorax not quite four times as wide 

 as its median length, in form as in the preceding, with very 

 remote, rather small but distinct, submuricate punctures, becom- 

 ing somewhat abruptly very coarse, deep, elongate and subanas- 

 tomosing but not attended by definite tubercles in almost lateral 

 fourth; elytra oval, very slightly longer than wide, fully six times 

 as long as the prothorax but only a little more than a third wider, 

 sparsely, very evenly but confusedly punctate, the punctures only 

 moderately small, deep and very distinct, each attended by a very 

 minute granule on its anterior edge ; abdomen rather coarsely and 

 somewhat closely but only slightly muricately punctate. Length 

 7.5 mm. ; width 4.8 mm. California (Kern Co.) nitidus Csy. 



5 — Body rounded, deep black, polished under the indument, clothed 



sparsely with rather coarse, erect and yellovvish-cinereous hair, 

 rather shorter than in ventricosjis^ not in the least lineate on the 

 elytra, and intermixed with numerous shorter recurved hairs; 

 head not half as wide as the elytra, finely but distinctly, sparsely 

 punctate ; prothorax less than four times as wide as its median 

 length, formed as in the preceding species, rather finely but 

 sparsely, submuricately punctured, with a few coarse punctures 

 scattered along the basal part and closely, coarsely and very roughly 

 punctured toward the sides; elytra as long as wide (d^) or a little 

 wider (?), very finely, sparsely punctato-granose as in ventri- 

 cosus^ except that the punctures are evenly distributed and not 

 condensed into lines, theinflexed sides more coarsely and strongly 

 but still not very closely punctured, the disk fully twice as wide 

 as the prothorax (9), sensibly less (d^) ; abtlomen rather strongly 

 but sparsely punctato-muricate. Length 6.4-7.0 mm. ; width 

 4.4-4.7 mm. California (Bishop, Inyo Co.), — A. Fenyes. 



angusticollis n. sp. 



6 — Body oblong-oval, moderately convex, black, with a feeble piceous 



tinge, the legs and antennae dark rufo-piceous ; erect pubescence 

 long, fine, sparse, very pale yellowish-white, with some shorter 

 and less erect hairs intermingled, not at all lineate on the elytra; 

 surface highly polished ; head not quite as wide as an elytron, 



