].']8 Journal New York Ent. Soc. [Vol. ii. 



striK of the elytra being longer and less close ; the thorax is also 

 narrowed behind. Length, 42 inch. = 10.5 mm. 

 Habitat, Illinois, Kansas. 



N. cavicollis Z('(-. (Plate III, Fig. 6.) — Differs oi bilobits ■AWi\ 

 fissicollis b\' the anterior half of the thorax being covered with 

 scattered punctures and the posterior half being broadly concave, 

 and deeply punctured. Length, .45 inch, = ti 25 mm. 



Habitat, Buffalo, N. V., (also Mo , la. to Texas). 



N. Imperfectus Lcc. — Black, smooth and glossy ; thorax with 

 basal impressions slightly transverse, and rather deep ; elytra w'ith 

 four punctate, imperfect striae on each ; the strife form an oblong 

 space, which is slightly flattened, sides of elytra smooth and glossy. 

 Length, .40 inch. = 10 mm. 



Habitat, Pa., Va., N. C. (mountainous districts). 



N. debilis Lfc. — Black, glossy; thorax with basal impressions 

 long and deep; sides sinuate, hind angles rectangular; elytra with 

 strife deeply punctured, palpi and antennae rufous. Length, .38 

 inch. = 9.5 mm. 



Habitat, Roan Mts., N. C, Ga (mountainous districts). 



. Carabus /,/////. 



Large sized species allied to Calosoina ; third joint of the 

 antennae cylindrical ; labrum not bifurcate, posterior coxie touching; 

 spurs of anterior tibiae terminal. 



Synopsis of species. 

 Thorax punctate beneath. 



Brassy-bronze; eljtra finely granuhite witli broken and continuous 



elevations mseander- 



Thorax not punctured beneath. 



Flind angles of thorax hardly produced. 



Jet black; elytra! stria: much broken . . . chamissonis. 



Hind angles of thorax prolonged, rounded 

 Elytra with impressed spots. 



IJlack. with blue margin; elytra! stri;v very fine . sylvOSUS. 



Cupreous with metallic purple or red margin . nemoralis. 



Elytra catenate; serrate near humeri. 



Black with blue margin ...... serratus. 



Elytra not serrate near humeri, stria> and intervals equal, distinct. 



Black with blue margin ...... limbatus. 



Elytra, bronzed, catenate, four intervals forming slender 



costa: vinctus. 



