BY THOMAS G. SLOANE. 503 



a Elytra with humeral ele- 

 vation S. saphyreomarginatus, Casteln. 



aa Elytra with no humeral 

 elevation. 

 Elytra convex, with 7th 



stria obliterate S. discopunctatus, Chaud. 



Elytra hardly convex, 



with 7th stria distinct S. obesulus, Chaud. 

 B Mesosternal andmetasternal 

 episterna punctate. 

 b Form and size normal. 

 c Elytra with interstices 

 flat (strisB shallow and 

 finely punctate). 

 Prothorax perceptibly nar- 

 rowed behind S. civilis, Germ . 



Prothorax not perceptibly 



narrowed behind aS'. Bockhamptonensis, Casteln. 



CO Elytra with interstices 

 convex (always convex 

 in ^, sometimes hardly 

 so in 5). 

 Elytra depressed, striae 

 deep and strongly punc- 

 tate aS'. habitans, sp.nov. 



Ely tra convex, striae strong 



and finely punctate S. monarensis, sp.nov. 



bb Form graceful, size small. 



Elytra fiat, broad, widely 

 margined ; prothorax 

 transverse S. cycloderus, Chaud. 



Elytra narrow, finely mar- 

 gined; prothorax almost 

 as long as wide aS'. ischnus, Chaud. 



