306 CASEY 



rufous; head moderately coarsely, deeply and not very closely 

 punctate, with a large occipital impunctate spot, the sides before 

 the eyes obviously converging and evenly, strongly arcuate ; pro- 

 thorax nearly four-hfths wider than long, only very slightly nar- 

 rower than the widest part of the elytra, the two bases equal, the 

 apex much narrower than the base, strongly sinuate, widest rather 

 behind the middle, with the sides subevenly and strongly arcuate, 

 the lateral punctures coarse and anastomosing, forming long irreg- 

 ular rugae ; scutellum moderate, slightly transverse, angulate ; 

 elytra short, not more than two-fifths longer than wide, narrowly 

 parabolic at tip, the series somewhat vmeven and with not very 

 coarse punctures laterally, the punctures of the interstitial series 

 more widel}^ spaced; abdomen sparsely punctulate medially. 

 Length, 5.7-6.0 mm.; width 2.4-2.5 mm. California (San 

 Diego) tersum n. sp. 



Pronotal punctures in a broad median area very minute and sparse..32 



32 — Elytral series distinct to the suture, although composed of very 

 fine punctures toward the latter and with the interstitial punctures 

 there confused as usual. Southern California 33 



Elytral punctures very minute, sparse and wholly confused broadly 

 toward the suture. Utah 34 



33 — Form narrowl} subcylindric, parallel and strongly convex, rather 

 shining, castaneous, the legs dark rufous, with the hind tarsi 

 much shorter than the tibise ; head broad, with rather coarse, 

 deep, perforate and somewhat widely separated punctures, which 

 become finer and sparse at the middle of the occiput, the sides 

 strongly converging and broadly arcuate before the eyes ; pro- 

 thorax large, fully as wide as the elytra, barely three-fifths wider 

 than long, widest somewhat behind the middle, with the sides 

 evenly, rather feebly arcuate, the apex much narrower than the 

 base, the punctures near the sides coarse, elongate and rather 

 close-set but not longitudinally confluent ; scutellum moderate; 

 elytra fully three-fifths longer than wide but only two and one- 

 half times as long as the prothorax, the serial punctures laterally 

 becoming especially coarse and close-set toward the humeri. 

 Length 6.7 mm; width 2.75 mm. Southern California. 



cylindricum Csy. 



Form nearly as in cylindricum but shorter, with a more transverse 

 prothorax, convex, rather shining but with a feeble opalescent 

 lustre, dark piceous, the legs paler; heatl well developed, with 

 the sides moderately converging and stronglv arcuate, becoming 

 subparallel near the eyes, the punctures deep, only moderately 

 coarse and rather close-set, becoming much coarser and sparser 

 along the base and toward the eyes, the occipital smooth spot 

 large but ill-defined ; prothorax large, four-fifths wider than long, 

 witlest behind the middle, the sides distinctly arcuate, becoming 

 gradually convergent and straighter anteriorly, the basal angles 

 nearly right and evidently prominent, the punctures medially 



