FAMILY CARABIO^. 49' 



Genus ANCHOMENUS (Bon.). Carabus (Fab.). 



' Mentum-tooth entire ; thorax cordate, posterior angles acute ; elytra oblong, subconvex ;. 

 ' head as broad as the thorax ; third joint of the antennae twice as long as the second. 

 ' Elytra rather sinuate at the apex. Anterior tarsi of the males with three dilated 

 'joints' (West. & Steph.*). 



Anchomenus EXTENSicoLLis (Steph.). (Plate xviii, fig. 10.) 



Head and thorax green, snbmetallic ; elytra purplish bronze, snbmetallic ; legs light 

 brown. Length about four-tenths of an inch. 



DicoExus DiLATATus (Say). ( Plate xxi, fig. 13.) 



Insect large ; thorax nearly as wide as the abdomen. Head black, smooth ; thorax purple, 

 indented before and behind. Elytra purple, strongly marked by eight plain lines : 

 one begins in the acute upper and outer angle, running rather obliquely, and joins the 

 fifth from the inner margin, the two enclosing one line : outer line next the margin 

 depressed, and Imperfectly punctured. Length about eight-tenths of an inch. 



DictELUs ELONGATus (Say). (Plate xxi, fig. 9.) 



Insect narrowed ; margin of the thorax and elytra nearly upon the same line, black ; head 

 and thorax smooth. Elytra marked with plain lines : line commencing at the outer 

 and anterior angle, rather oblique, and becoming more so at the posterior extremity, 

 where it coalesces with the other lines, and all together terminate in the posterior and 

 inner angle ; the dotted line of the margin obsolete. Length about seven-tenths of 

 an inch. 



SriijEBODERus sTENOsTOMis (Dj.). ( Plate xxi, fig. 10.) 



Insect dil.Lted behind, narrowed before ; head smooth, shining black ; thorax s^mooth, 



brilliant steel-blue, punctured Ijehind. Elytra dark purplish upon their disks, bordered 



by rich steel-blue, punctiu^d and. lined- ; lines interrupted posteriorly. Glossy black 



and punctured laterally Ijeneath. Length from five- to six-tenths of an inch. 



•Jfcr; SrsMiEira rainarksthat the AircnemsscsmsybeABth^nkilicd from CAf,iiTBTtis bythe elongate formof the 

 thorax, ami its not being iHinctiiti; throughout; aud from Piatinus, by its acute simple notcli in the centre of tjje- 

 mcntum. 



[ AoBICDLTffBAL RePORT — VoL. V.] 7 



