the inner one the longest : eljtra black with a very faint tint of blue : legs 

 rufous. 



This is most probably the C. emarginatiis of Say. but it does not exactly 

 accord with De Jean's species. [Say's C. emarginatua belongs to the genus 

 Anomo'jlossus, Chaud. ; the species here described is C. impunctifrons, Say.] 



24. Platynus angusticollis, DeJean. — Length of the body 5 Hues. 

 Taken in lat. 5-4° and 65°. Not uncommon in Britain 



[24] Body very black, glossy, somewhat narrowed. Head smooth, nar- 

 rower than the prothoras. including the neck sub-rhomboidal, without it 

 triangular; palpi and antonnie piceousj frontal impressions large; prothorax 

 narrower than the elytra, obcoruatc, longer than wide; dorsal channel deep, 

 terminating anteriorly in a transverse obtuse angular impression; hitoral mar- 

 gin diluted, 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 puuctiform impressions, the anterior 

 one being adjacent to the fjrmer furrow, and the posterior to the latter. 



[This is considered an erroneous determination by Dr. Le Conte (List. 

 p. 7), and is inserted bj" him as a race of/*, sinnafus, Dej.] 



25. Agonum (Anciiomenuj) E.\TKNSicor.LB:, Say. — [Ent. Works, ii. 478.] 

 A pair taken in lat. 54°. [Belongs to Platymis ; has been taken in Ontario] 



20. Agonum picipenne. Kirhi/. — Length of the body 3] to 4 Hues, Seve- 

 ral specimens taken in lat. 54°. 



[25] Body black, glossy. Mouth and its organs rufous, except the upper- 

 lip, which is edged with that colour ; antennae longer than the prothorax. 

 piceous with the scape paler than the other joints : prothorax longer than in 

 the foUowiog species, oblong-ovate, with the lateral margin piceous, and not 

 dilated posteriorly as in the majority ; basilar impressions rather shallow, 

 oblong : elytra oblong, rufo-piceous, slightly furrowed, furrows impunctured ; 

 five punctiform impressions between the second and third ; the three anterior 

 ones adjacent to the latter, and the two posterior to the former : legs dusky 

 rufous. 



Variety B. With only four punctiform impressions, legs paler. 



C. With the 2nd. 8rd and 4th joints of the antennae pioeous, the 



rest ferruginous : impressions of the elytra as in B. 



D. Larger, elytra with five impressions, in other respects like C 



This species appears very like A. lennm, Dej., which is also North Ameri- 

 can, but the colour of the underside of the body and of the head and pro- 

 thoras is different. [Belongs to Plati/mifi.'] 



