28 NORTH AMERICAN 



Gilroy, California, 1. 



The antennae with exception of the first three joints, and also the 

 maxillary palpi are wanting in the type. 



13. S. Austini n. sp. (Fauvel MS.). — Form moderately slender, sides 

 parallel. Pubescence fine, evenly distributed, moderately sbort, ratber 

 sparse and inconspicuous, cinereous. Head large, not twice as wide as 

 long ; interocular surface very feebly depressed, scarcely twice as wide as 

 the eye, longitudinal elevation much narrower than the lateral portions, 

 rather acutely and strongly convex, prominent ; punctures fine, rounded, very 

 closely crowded, evenly distributed, not coalescent ; ocular lines meeting at 

 one length in advance ; eyes very large, wide, and prominent ; antennae 

 very slightly longer than the width of head, rather slender, dark piceous, 

 club prominent; third joint one-fourth longer than the fourth, fourth per- 

 ceptibly longer than the fifth, sixth shorter, very slightly longer than the 

 seventh, eighth slightly elongated, joints of club increasing in length, last 

 two more robust than the ninth ; maxillary palpi slender, first two joints 

 pale piceo-testaceous, third pale piceous-brown. Prothorax robust, arcuately, 

 evenly, and rapidly increasing in width to the middle, where it is slightly 

 narrower than long ; sides thence rather rapidly convergent posteriorly and 

 nearly straight ; anterior margin slightly longer and just visibly more arcu- 

 ate than the posterior ; surface strongly tuberculate near the basal angles, 

 broadly and feebly swollen behind the apical angles, transversely impressed 

 behind the apex, finely, extremely closely, and somewhat evenly, though at 

 some points rather confusedly punctured ; canaliculation prominent, im- 

 pressed, narrow, beginning at one-third the length from the apex and nearly 

 one-half as long as the pronotum. Elytra at base very much narrower than 

 the head ; sides moderately divergent posteriorly, longer than the width at 

 base, nearly straight ; together broadly, roundly, and distinctly emarginate 

 behind ; suture somewhat shorter than the pronotum ; surface depressed, 

 nearly even, coarsely, closely, and irregularly punctate, scarcely channeled, 

 but the punctures at a spot behind the middle seem to indicate an obscure 

 vortex whirl, in most specimens it is quite distinct under suitable magnify- 

 ing power. First four abdominal segments very slightly wider than the 

 contiguous elytra ; sides parallel and very feebly arcuate ; border very 

 strong, suddenly much narrower on the fifth segment ; surface feebly con- 

 vex, rather strongly, closely, and evenly punctulate, interspaces polished; 

 transverse carinae tricuspid, middle cusps broad and coarsely acuminate, 

 lateral excessively short and rudimentary. Legs rather long and slender, 

 dark fuscous ; first joint of posterior tarsi much more than twice as long as 

 the second, much longer than the next three together, and three-fourths 

 longer than the last. 



Male. — Fourth ventral segment very feebly and just perceptibly emargi- 

 nate in the middle fourth, with the contiguous surface very feebly impressed ; 

 fifth segment strongly emarginate in its middle fourth at apex, emargination 

 evenly rounded, six times as wide as deep, contiguous surface cylindrically 

 impressed throughout anteriorly ; sixth segment strongly sinuate at apex, 

 sinus about equal in width and curvature to the apices, rather acutely 



