FAMILY CARABIDJE. 49 



Genus ANCHOMENUS (Bon.). CAiiADrs (Fal).). 

 ' Mentum-tooth entire ; thorax eonlate, posterior angles acute ; elytra oblong, siihoonvcx > 

 ' head as bi\)a(las the thorax ; third joint of the antenncT twice as long as the second. 

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

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



Anciiomenus extensicollis (Steph.). (Plate xviii, fig. 10.) 



IJead and thorax green, submetallic ; elytra purplish bronze, submetallic ; legs light 

 Ijrown. Leneth about four-tenths of an inch. 



DiccF.Lis DiLATATus (Say). ( Plate xxi, fig. 13.) 



Insect large ; thorax nearl^as wide as the abdomen, llcatl black, smtiolh ; thorax j>urple, 

 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 punctui-ed. Length about eight-tenths of an inch. 



DiccELus ELONG AXIS (Say). (Plate xxi, fig. ?*•) 



Insect narrowed ; margin of the thorax and elytra nearl\ 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 ix)Sterior and 

 inner angle; the dotted line of the margin obsolete. ].,ength about seven-tenths of 

 an inch. 



SpH.iuiouERus sTENCsTOMi's (Dj). ( Plate xxi, fig. 10.) 



Insect dilated behind, narrowed before ; heail smooth, shining i)lack ; thorax smooth, 



brilliant steel blue, punctured Uhind. Elvira dark purplish upon their disks, bordered 



by rich steel-blue, i>unctured and lined; lines interrupted posteriorly. Glos.<y black 



an<l i>unctund laterally lieneath. Length from five- to six-tenths uf an inch. 



* Mr. SrcrBENs romirkii that the Akcbomkrds may be distinsniKbed from Calimtos by the elongate Tormorthe 

 thorsx, .-ind its not being punctate Ihron^lionl ; and from Piatims, by its acute simple notch io Ibe centre of the 

 mentiim. 



[ AoBici'LTDRAL Rf.i'out — Vol.. v.] 7 



