1873.] o43 [Horn. 



moderately coarse spinules arranged in a triple series or densely and 

 irregularly placed. 



Hind tibia? with moderately long spinules arranged in 

 three series ; thorax punctured or rugose at the sides. 

 Elytra with punctures in the apical region only. 



Thorax with narrow space within the margin punc- 

 tured. 

 Sutural stria entire ; elytral punctures coarse ... patruelis. 



Thorax with wide lateral and apical space strigose ; 



sutural stria abbreviated lucidulus. 



Elytra densely and coarsely punctured, except a small 

 scutellar space not well defined ; thorax coarsely 



punctured over nearly the entire surface seneipunctatus. 



Hind tibia? with short spinules densely placed ; thorax 

 with basal margin only punctured. 

 Elytra sparsely punctured at apex only. 



Elytral punctures coarse ; marginal stria of meso- 



sternum sinuous at middle dimidiatipenuis. 



' Elytral punctures finer ; marginal stria of mesoster- 



num straight gaudens. 



Elytra coarsely punctured over the greater part of the 

 surface. 

 Elytra punctured over the entire surface ; marginal 

 thoracic stria not extending on the base ; anterior 



tibia? moderately denticulate serrulatus. 



Elytra with impunctured space at base ; marginal 

 stria of thorax extending along the base ; anterior 



tibia? with two apical teeth very large sulcifrons. 



S. patruelis, Lee. Bost. Journ. V., p. pi. fig. ; Mars. Mon., 1855, p. 

 711, pi. 20, fig. 147 ; Javeti, Mars. loc. cit. p. 709, pi. 20, fig. 146. 



Form robust, surface shining with bluish-green or slightly bronze 

 lustre. Head distinctly margined, front smooth and with a chevron more 

 or less marked. Thorax with a narrow band of punctures within the 

 lateral margin extending usually along the apex ; basal margin with a 

 narrow space coarsely punctured. Elytra very coarsely but not densely 

 punctured at apex, punctures extending along the suture two-thirds to 

 apex ; external subhumeral obsolete, humeral oblique, fine and long, in- 

 ternal subhumeral disconnected, short ; first dorsal extending slightly 

 beyond the middle, second shorter, third as long as first, fourth shorter 

 than the preceding, and arched at base joining the sutural. Pygidium 

 and propygidium sparsely and not coarsely punctured, the former 

 smoother at apex. Anterior tibiae six-denticulate, the apical three teeth 

 much coarser, hind tibia? biseriately spinulose. Length .10-. 14 inch; 

 2.5-3.5 mm. 



In this species the punctuation of the sides of the thorax varies, and 

 \"-*. extent may be reduced to a small patch near the anterior angle. 



