106 THE CANADIAN ENTOMOLOGIST. 



of our European species, but which A. cupripenne far exceeds in beauty. 

 [Quite common in Western Canada.] 



[29] 34. Calathus gregarius, Say. — Taken frequently in lat. 54°. 

 [Say, Ent. "Works, ii. p. 472. Taken in both Ontario and Quebec] 



35. Platyderus nitidus, Kirby. Plate I. fig. 5. —Length of body 

 4 lines. Three specimens, all females, taken in lat. 54°. 



Body black, glossy; head triangular; mouth piceous ; antennas rather 

 longer than the prothorax, piceous withlthe terminating joints paler, scape 

 rufous; prothorax subquadrangular, with the posterior angles rounded, emar- 

 ginate at the base as well as at the apex, slightly channelled, with a pair of 

 linear basilar impressions on each side, the external one being oblique and 

 the other longitudinal ; elytra rather deeply furrowed, with two punctiform 

 impressions in the usual situation ; viewed in the sun, the elytra exhibit 

 changeable shades of blue and bronze ; forebreast piceous ; legs clear, testa- 

 ceous. [Previously described as Feronia (Pteroslickus) erythropus, by 

 Dejean.] 



[30] 36. Argutor bicolor, Kirby. — Length of body 3 lines. Taken 

 twice in lat. 54°. 



Body glossy, above black, beneath mahogany coloured; antennas and palpi 

 at the base dark mahogany colour; prothorax longer than wide, rather nar- 

 rowest at the base, where it is slightly sinuated, anterior angles rounded, 

 without punctures, dorsal channel slight, a deep short basilar furrow on each 

 side ; elytra slightly furrowed with impunctured furrows, the seventh from 

 the suture obsolete ; in the interstice between the second and third are three 

 punctiform impressions, the anterior one adjoining the latter and the two 

 posterior ones the former. 



This species approaches very near to A. erytkrojpus, Dejean, but it is 

 smaller, and the posterior angles of the prothorax are not rounded. The 

 under side of the body, the legs and antennae, are all of the same colour 

 sometimes a little darker, at others a little paler. [The genus Argutor, Meg. 

 is now included in Pterostichus.~\ 



37. Argutor [Pterostichus] femoralis, Kirby. — -Length of the body 

 3 1 lines. Taken in lat. 54°. 



This species approaches very near to the preceding one, and its place is 

 between that and A. vernalis, of which it is the American representative. 

 It differs from A. bicolor chiefly in having only the scape of the antennae 

 and the tibiae and tarsi of a different colour from the rest of the body, and in 

 having the anterior half of the furrows of the elytra slightly punctured ; and 

 from the latter in having the prothorax narrower at the base, with only a 

 single impunctured impression on each side. [We have received a specimen 



