AMERICAN PHILOSOPHICAL SOCIETY. 461 



15. H. AGRICOLUS [agricola]. — Black; palpi and antennae 

 piceous, the latter paler at base j sternum and postpectus glabrous. 



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



Antennae dusky piceous, basal joint light piceous ; palpi pi- 

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

 in a particular light ; thorax slightly narrower at base, dorsal 

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

 rugose, spaces of the basal lines deeply impressed 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 carbonarms. 

 It is also common. 



\_£[. paradoxus Hald., and Anisodactylus striatus, Lee. appear 

 to be properly referred to this species. — Leg.] 



16. H. BALTIMORIENSIS. — Black; elytra reddish-brown, black- 

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



Length two-fifths of an inch. 

 Carabus baltimoriensis, Melsh. Catal. 



Nasus with about three hairy punctures each side at tip 

 antennae black-brown, base, labrum, palpi, and base 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- 

 dish brown, common disk blackish ; feet testaceous. 



Distinguished from all the preceding ones by the thorax being 

 much narrowed behind. 



[Also an Anisodactylus, and considered as the previously 

 described Carabus St. crucis Fabr. — Leg.] 



17. H. G^NUS. — Blackish, slightly tinged with green; palpi 

 and base of the antennae testaceous. 



Length seven-tenths of an inch. 



Carabus ccenus Melsh. Catal. 



Head green-black slightly tinged with cupreous; antennae 

 brown, three basal joints and palpi testaceous ; thorax black, very 

 1823.] 



