BY THOMAS G. SLOANE. 227 



Table of Species kiioicn to me. 



A. Lateral cavities of peduncle punctate or rugulose. 



B. Metasternal episterna elongate (metasternnm 



between intermediate and posterior coxae longer 



than posterior cox;e). 



C. Protliorax not longer than broad, mandibles 



short C. proce7-a, Yntz. 



CC. Prothorax longer than broad, mandibles 

 decussating (antenna; very short, nionili- 



form) C. monilicornis. SI. 



BB. Metasternal episterna very short (metasternum 

 between intermediate and posterior coxse 

 shorter than posterior coxa"). 

 J). Head with a strong transverse occipital im- 

 pression C. oblonga, Putz. 



DD. Head without a transverse occipital im- 

 pression (or at most only lightly indicated 

 on sides). 



E. Head without a noticeable lateral 

 sinuosity lietween supra-antennal 

 plates and wings of ch'peus. Pro- 

 sternal episterna rugose on basal 

 declivities C. abWeviata, "Patz. 



EE. Head with a decided lateral sinuosity 

 between supra-antennal plates and 

 wings of clypeus. frosternal 

 episterna smooth on basal declivities G. madeayi, SI. 

 A A. Lateral cavities of peduncle smooth. 



F. Prothorax not broader than long, normally 



narrowed anteriorly C. regularis, SI. 



FF. Prothorax broader than long, greatly nar- 

 rowed anteriorly. 

 6. Mandibles short. 



H. Elytra with stri.^ deep entire, strongly '^ ^_ t ^.^^ p^tz. 



punctate; antennsesubnliiorm, second f ^ . .. ,. c,, 



7 .,,.,„ , , , , , . , O. tnterstitialis, bl. 



]omt decidedly longer than third ' 



HH. Elytra smooth on sides and apex; 

 antennae filiform, third joint not 

 shorter than second. 



