24 NORTHERN ZOOLOGY. 



DESCRIPTION. 



Body very black, glossy, somewhat narrowed. Head smooth, narrower than the prothorax, 

 including the neck subrhomboidal, without it triangular ; palpi and antenna; piceous ; frontal impres- 

 sions large : prothorax narrower than the elytra, obcordate, longer than wide ; dorsal channel deep 

 terminating anteriorly in a transverse obtuse angular impression ; lateral margin dilated, especially at 

 the base, reflexed, somewhat piceous in a strong light, basilar impressions single, large, round, with 

 a few scattered indistinct punctures : elytra rather deeply furrowed ; furrows very slightly punctured, 

 between the second and third are two punctiform impressions, the anterior one being adjacent to the 

 former furrow, and the posterior to the latter. 



XI. Genus AGONUM. Bonell. 



ii. Subgenus Anchomenus. 2 



(25) 1. Agonum (Anchomenus) extensicolle. Extended-necked A. AncJwmeirm. 



Anchomenus extensicollis. De J. Coliopt. iii, 113, 11. 



viridanus. De J. Cat. 10. 



Carabus extensicollis. Melsh. Cat. 



Feronia extensicollis. Say. Amer. Trans. N. S. ii, 54, 34. 



Length of the body 4A lines. 



A pair taken in Lat. 54°. 



DESCRIPTION. 



Body black underneath, above dark green sometimes bronzed ; palpi, legs, and three first joints 

 of the antenna? reddish-yellow : prothorax quadrangular, elongate, somewhat constricted posteriorly, 

 lateral margin very slender ; basilar impressions oblong : elytra furrowed, furrows obsoletely punc- 

 tured ; five punctiform impressions in the third furrow from the suture. 



(26) 2. * Agonum picipenne. P it ch-ivinged Agonum. 



A. (picipenne] nigrum, nitiduni; ore pedibusque rufis ; prothorace oblongo-ovato ; elytris piceis, foveolis quatuor vel quinque 



impressis. 

 Pitch-winged Agonum, black, glossy; mouth and legs rufous; prothorax oblong-ovate ; elytra piceous with four or five 



punctiform impressions. 



Length of the body 3| — 4 lines. 



Several specimens taken in Lat. 54°. 



2 Anchomenus differs from Agonum in scarcely any respect, except in having the posterior angles of the prothorax less 

 rounded, and as it is closely connected with it by those species, which like Agonum picipes have a longer prothorax, I con- 

 sider it merely as a subgenus. 



