1873.] OOJ [Horn. 



coarsely punctured. Anterior tibiju multidenticulate, middle and hind 

 tibise spiuulose. Length .14 inch ; 3.5 mm. 



Easily known by its sub-opaque, steel-blue surface, punctured over its 

 entire extent. 



One specimen, California. 



S. vestitus, Lee. Ann. Lye. V., p. 168. 



Oval, feebly convex^ piceous, opaque. Head moderately densely punc- 

 tured, frontal stria interrupted at middle. Thorax with margins sparsely 

 fimbriate, surface moderately coarsely punctured, punctures denser at 

 the sides, but not rugose. Elytra moderately coarsely and equally punc- 

 tured, over the entire surface, but not densely ; external subhumeral 

 short basal, internal feeble disconnected ; first dorsal extending slightly 

 beyond the middle, 2-3-4 gradually shorter, 2-3 hooked at base, fourth 

 arched, joining the entire sutural. Pygidium and propygidium sparsely, 

 but not densely punctured. Body beneath, and legs reddish-brown, ante- 

 terior tibiae multidenticulate, middle and hind tibi* sijinulose. Length 

 .07-.10 inch ; 1.75-2.50 mm. 



Occurs in California near San Francisco, rare. 



Group VIII. 

 Species usually of robust facies. Front distinctly margined. Pro- 

 sternum moderately compressed, foveate at tip, stride usually entire, 

 convergent in front. Anterior tibiie rather coarsely denticulate, middle 

 and hind tibite biseriately spinulose. 



The species of this group may be readily distinguished by the following 

 table : 

 Elytra with distinct sutural stria. 



Sutural stria entire, punctured space at apex of small 



extent ; dorsal strias not entering the punctures sphseroides. 



Sutural stria abbreviated at apex, or confused. 

 Ely tral punctures apical only, basal region impuuctured. 

 Thorax strigoso-punctate at sides and apex ; elytra 

 densely punctured at apex and sub-opaque ; surface 



bronzed seminitens. 



Thorax sparsely punctured at sides; elytra sparsely 



punctured ; color brownish, shining, not bronzed ferrugineus. 



Elytral punctures dense, extending to base between the 

 striae, scutellar mirror more or less defined. 

 Elytra coarsely punctured. 

 Mirror sharply defined ; sutural stria entire, confused 



. at tip fraternus. 



Mirror not defined ; sutural stria obsolete at apex mancus. 



Elytra strlgoso-aciculate bigemmeus. 



Elytra with sutural stria wanting. 



Scutellar mirror well defined ; fourth dorsal distinct.... Fitchii. 

 No scutellar mirror ; fourth dorsal and arc obliterated, estriatus. 



