IXHABITING NOHTII AMERICA. 77 



■ e1vt»'a are sometimes obsolete or Nvaiiling, This species docs 

 not agree witli the description of C. granulatiis either as 

 respects the colour of the antenna- or that of tlie hody. And 

 although it corresponds wiih llie description of '((tdatus 

 better tlian any other insect I liave yet seen, yet tlie difler- 

 ences are so stril<ing as to forliid its Ijcing referred to that 

 species. Tliis will l)c placed beyond a doubt by comparing 

 Olivier's description with the above, and particularly that 

 portion of it relating to the elytia. of which he says that they 

 are " presque lisses ou sans stries bien in;u(ju«'-es, avec 

 trois rangees des points enfonces." 



S. C. *limbuti/s apterous, l)lack ; margin of the elytra j)ur- 

 plish ; fourth, eighth, and twelfth interstitial lines inter- 

 rupted. 

 Leugtii four-fifths of an inch. 

 Body black, glabrous. 

 Head obsoletely corrugated above the eyes ; antenjur fuscous 



at tip. 

 TAoraa- impunctured, rugulous at base. 

 Elytra margined with purple, strife with transverse lineolar 

 punctures, interstitial lines elevated, equal, distinct, mar- 

 ginal ones and tips sliglitly reticulated, fourtii, eiglUii, and 

 twelfth interrupted. 

 Pectus impunctured ; postpectus each side at base obsoletely 

 punctured ; feet black ; renter each side obsoletely punc- 

 tured. 



This insect very much resembles C. interruptus, but dif- 

 fers in the form of the punctures of the elytra and in having 

 this part margined with purple ; tlic form also is less elon- 

 gated. 



Taken by Mr. J. Gilliams in Maryland. 



-1. C. *serratns apterous, black ; thorax and elytra margined 

 with obscure violaceous, interstitial lines reticulated, three 

 interrupted ones. 



Length more than seven-tenths of an inch. 



