COLEOPTERA. ] 45 



sculpture, and by the structure! of the antennae. The prothorax bears 

 a great resemblance to that of amicus, having, as in that species, the 

 small impressions near the anterior angles. 



124. S. califorilicilS n. sp. — Form very moderately robust. Pubes- 

 cence short, fine, Father sparse, and inconspicuous, sub-recumbent, pale 

 flavo-cinereous. Head rather small, twice as wide as long ; interocular sur- 

 face nearly flat, slightly more than twice as wide as the eye ; longitudinal 

 elevation very slightly wider than the lateral portions, evenly and feebly 

 convex : sulcations broadly rounded ; punctures deep, very closely crowded ; 

 interspaces coarsely granulose and lustreless ; ocular lines meeting at one 

 length in advance ; antennae distinctly longer than the width of head, black, 

 piceous toward the tip, slender, club moderate ; third joint one-fifth longer 

 than the fourth, fourth and fifth equal, sixth and seventh equal in length, 

 the latter much thicker, eighth sub-globular, as thick as the seventh; joints 

 of club increasing in length, last two equal in width and much larger than 

 tin- ninth; maxillary palpi slender, deep black, first joint dark blackish- 

 testaceous. Prothorax small, widest slightly behind the middle; sides 

 thence vevy feebly convergent anteriorly and posteriorly, arcuate, becoming 

 much more strongly so in the former case, slightly sinuate in the latter ; 

 anterior margin slightly shorter and more arcuate than the posterior; sur- 

 face very feebly and transversely impressed just behind the apex, otherwise 

 nearly evenly convex; punctures small, polygonally crowded, deep, rather 

 evenly distributed ; interspaces coarsely granulose and somewhat lustreless ; 

 canaliculation well marked, two-thirds as long as the pronotum, terminating 

 at a slightly less distance from the base than the apex. Elytra at base dis- 

 tinctly wider than the head ; sides nearly parallel, much longer than the 

 width at base, somewhat arcuate at two-thirds the distance toward the 

 vertices ; together broadly, roundly, and rather strongly emarginate behind ; 

 suture two-thirds longer than the pronotum ; surface distinctly impressed on 

 the suture toward the base, rather coarsely, very closely punctate ; punctures 

 crowded, rarely coalescent ; interspaces coarsely granulated. Abdominal 

 segments decreasing uniformly and rapidly in width, first distinctly narrower 

 than the contiguous elytra; surface very convex, coarsely, deeply, closely 

 punctulate ; interspaces coarsely granulose; transverse carinae tricuspid, 

 middle cusps finely acuminate, prominent ; lateral border very narrow and 

 almost obsolete except on the first segment. Legs short and slender, piceous- 

 black ; first joint of the posterior tarsi one-half longer than the second, equal 

 in length to the fifth, joints two to four uniformly and rapidly decreasing in 

 length. Body winged. 



Male. — Fifth ventral segment just perceptibly emarginate in the middle at 

 apex ; sixth narrowing toward the tip, where it is deeply bilobed ; cusp 

 slightly rounded ; seventh segment narrow at the apex, where it is trans- 

 versely truncate. 



Female. — Sixth segment evenly rounded behind. 



Length 2.1-2.3 mm. 



Lake Tahoe, Nevada, 4; California (Calamas, Gilroy, San Buena- 

 ventura), 5. 



Stenini. 10 



