AMERICAN PHILOSOPHICAL SOCIETY. 401 



lo. II. AORIC0LU8 [agricola]. — Black; palpi and untennaj 

 piceous, the latter paler at base ; sternum and pcstpectus glabrous. 



Length from nine-twentieths to one-half of an inch. 



Antenna) dusky piceous, ba.sal joint light piecou.s ; palpi pi- 

 ceous, paler at tip ; vertex with an obsolete, piceous spot; visible 

 in a particular light ; thora.x slightly narrower at ba.sc, dorsal 

 line distinctly but not deeply impressed, lateral margin and a little 

 rugose, spaces of the ba.sal lines deeply impres.sed and densely 

 punctured ; elytra, striae profound, impunctured ; sixth intersti- 

 tial line with a single puncture. 



This species resembles the preceding one, but it has a shorter 

 and more robust form, and the thorax is somewhat narrower at 

 the base than in the middle, which is not the case in carbonariui. 

 It is also common. 



[//. paradoxns Hald., and Anisodarfi/fus xtriafus, Lee. appear 

 to be properly referred to this species. — Lec] 



10. II. IJALTIMORIENSIS. — Black; elytra reddish-brown, black- 

 ish on the disk ; feet pale testaceous. [34] 



Length two-fifths of an inch. 

 Carabus ballimoriensis, Melsh. Catal. 



Nasus with about three hairy punctures each side at tip 

 antenna) black-brown, base, labrum, palpi, and ba.se of the man- 

 dibles pale reddish-brown ; thorax black, somewhat narrower 

 behind, posterior angles acute, dorsal line distinct, basal lines 

 dilated, and with the posterior margin conspicuously punctured; 

 scutel blackish; elytra, base, exterior and posterior margins red- 

 dLsh brown, common disk blackish; feet testaceous. 



Distinguished from all the preceding ones by the thorax being 

 much narrowed behind. 



[Also an Anis(j(I(i<ti/lits, and considered as the previously 

 described Carabus St. crncix Fabr. — Lec] 



17. II. CiENUS. — Blackish, slightly tinged with green; palpi 

 and base of the antcnnze testaceous. 



Length seven-tenths of an inch. 



Carabus cctnus Melsh. Catal. 



Head green-black slightly tinged with cupreous ; antennae 

 brown, three basal joint;* aud palpi testaceous ; thorax black, very 

 1823.] 



