347 



the following, has a rufous thorax and dark cupreous elytra. They are 

 found under stones in wet meadows. 



A. extensicollis. Head and thorax green, elytra purple, margined with 

 green; beneath piceous; feet ochreous. 



Length seven twentieths of an inch. 



Head impunctured, and, with the thorax, seruginous green; lip and man- 

 dibles piceous, palpi and antenna? dark reddish brown, basal joint of the lat- 

 ter ochreous. Thorax at base and dilated lateral indentations slightly 

 punctured, dorsal furrow distinct. Scutel blackish purple. Elytra deep 

 reddish purple, external submargin green, with twelve or more ocellated 

 punctures; striae distinctly punctured at base, interstitial lines very slightly 

 convex, with exceedingly minute punctures, the third line with from five to 

 seven large punctures, three of which nearest the base are contiguous to 

 the third striae, the fourth in the middle of the interstitial line, and the 

 remaining ones contiguous to the second stria. Body beneath glabrous, 

 piceous; feet ochreous. 



The punctures of the interstitial lines are so small as not to be discovered 

 except by a powerful magnifier. It is probable that this insect is the Fero- 

 nia extensicollis of Say, with whose description it agrees in most respects, 

 and therefore his name is adopted, until a comparison with an undoubted 

 specimen of his insect shows mine to be distinct, in which case it may 

 receive the specific appellation of proximus. Mr. Say describes the extensi- 

 collis as having impunctured strife, convex interstitial lines, rufous antenna3 

 and palpi, and testaceous feet, in which it differs from our species. 



GENUS CHL^ENIUS. 



C. *pubescens. Head and thorax green, elytra olivaceous, head impunc- 

 tured, labrum truncate, body beneath fuscous, feet pale ochreous. 



Length nearly nine twentieths of an inch. 



Body pubescent, the hairs decumbent, sericeous, ferruginous. Head bald, 

 glabrous, impunctured. Palpi and three basal joints of the antennae ochre- 

 ous yellow, smooth; remaining joints fuscous, very hairy. Labrum and 

 mandibles castaneous. Thorax above green, polished, punctured, with 

 longer, more elevated hairs than on the elytra; broadest in the middle; lon- 

 gitudinal and transverse diameters subequal; lateral edges purple, regularly 

 curved, slightly excurved at base; disc distinctly canaliculate, basal lines 

 tinged with purple, elongated, and curving outwards towards the middle of 

 the margin. Coleoptra olivaceous, disc purplish, submargin green, outer 

 edge dark ferruginous; surface slightly polished, deeply and distinctly punc- 

 tured; punctures of the stria? approximated, less distinct at tip; interstitial 

 lines a little convex. Pectus, postpectus and vent fusco-piceous, punctured, 

 with remote hairs. Feet pale ochreous yellow. 



