490 Coleopterological Notices, VII. 



the middle and also bisetose ; front very gradually declivous anteriorly, the 

 transverse sulcus separating it from theclypeus almost obsolete; clypeus large, 

 broadly prominent at each side. Antennfe not quite as long as the head and 

 prothorax, gradually and moderately incrassate toward apex ; second joint 

 cylindric-oval, nearly as large as the first, ^5 longer than wide, barely as long 

 as the next two but very much thicker ; three to six just perceptibly increas- 

 ing in size, subquadrate or nearly globular and as long as wide throughout ; 

 six to ten more rapidly but uniformly increasing in size ; sixth globular ; 

 seventh and eighth oval, slightly transverse and % wider than long; eight to 

 ten increasing only slightly in length; ninth ^, tenth }4j wider than long ; 

 eleventh nearly as long as the two preceding but scarcely as wide as the tenth, 

 ogival. Prothorax rather longer than wide, fully }4 wider than the head, par- 

 allel, broadly rounded at the sides anteriorly, moderately narrowed and feebly 

 sinuate toward base ; disk with six strong deep fovese near the basal margin 

 extending throughout the width but without trace of lateral carina. Scutel- 

 lum extremely minute. Elytra % longer than wide, a little more than twice 

 as long as the prothorax and rather more than % wider, parallel and broadly 

 rounded at the sides, strongly rounded at base, the humeri somewhat evident; 

 humeral plicfi narrow but strong, the subhumeral impression correspondingly 

 deep and distinct ; inner fovea large ; suture not modified. Legs slender, 

 moderate in length, the femora feebly clavate, the anterior only slightly more 

 so ; four basal joints of the hind tarsi subequal. Length 0.85 mm.; width 

 0.3 mm. 



Pennsylvania (locality unknown). 



This species differs from any other of the subgenus in its nar- 

 rower and more depressed form, the elytra being less convex, less 

 narrowed toward base, and with the humeri somewhat evident. 

 It is represented in my cabinet by a single specimen. 



19. S. californicus Mots. — Bull. Mosc, 1845, No. 1, p. 48; Mann.: 

 1. c, 1852, p. 329. 



Elongate-oval, strongly convex, polished, black, the elytra and 

 legs dark testaceous, the antennae and palpi still paler; apical mar- 

 gin of the pronotura narrowly pale ; head and pronotum impunc- 

 tate, the former coarsely pubescent with the hairs erect, the lat- 

 ter more sparsely and inconspicuously ; elytra rather sparsely but 

 coarsely pubescent, the hairs moderately short and strongly re- 

 curved. Head subtriangular, as wide as long, the eyes moderate 

 in size, convex and near the base ; front tumid in the middle be- 

 tween the scarcely marked antennal prominences ; clypeus gradu- 

 ally declivous, not prominent at the sides ; labrum transverse, 

 rather large and convex, broadly arcuate at apex ; maxillary 

 palpi long, the third joint rather slender, fusiform, the fourth acic- 

 ulate, scarcely more than ^ as long as the third. Antennae 



