AMARIN/E 227 



lies before me, so closely resembles pulzeysi Bates, from Mexico, 

 that I am altogether uncertain as to its validity. In addition to 

 the characters given above, the very large head and deeply and al- 

 most wholly strigose mandibles are important from a generic view- 

 point; the deep strigae are obsolete for a greater distance basally 

 on the right than on the left mandible. The scutellum extends 

 posteriorly between the elytra much less markedly than in Curto- 

 notus. The mentum tooth is strongly bidentate. The form and 

 sculpture of the pronotum and elytra are virtually as in Curtonotus. 



Curtonotus Steph. 

 Cyrtonotus Auct. 



Removing the two aberrant species pterostichinus and hcematopus 

 as above, this rather large and well known genus becomes fairly 

 homogeneous, the chief diversification being in the form of the 

 thoracic sides basally; there is usually a deep sinus just before the 

 angles, though in the brunnipennis section, the sides are rounded 

 to the basal angles, but with the lateral parts of the base never- 

 theless remaining distinctly sinuate. A large proportion of the ex- 

 treme northern species are unknown to me in nature, and so at 

 this time I will simply make known a few nondescript species, 

 which can readily be interpolated in the very satisfactory table 

 drawn up by Mr. Hayward. If Curtonotus is to be maintained 

 as a distinct genus, the namefulvipes Putz., will have to be restored, 

 in place of pennsylvanicus Hayw. This species is aberrant in out- 

 line, almost exactly resembling Bradytus exaratus Dej., which, with 

 a few allied species, forms an equally aberrant element in Bradytus, 

 and, as further proving the close relationship of Curtonotus and Bra- 

 dytus, it should be said that wholly similar differences in the form 

 of the thoracic sides toward base, as related of the former, exist 

 also in the latter genus; this qan be observed in comparing, for 

 example, apricarius with septentrionalis. 



On reading the description of Curtonotus adstrictus given by Put- 

 zeys, I am unable to differentiate it from laticollis Lee., and be- 

 lieve the two to be identical. It is probable that the species de- 

 scribed below under the name spadiceus, is among those identified 

 as adstrictus by Hayward, but the Putzeys description does not fit 

 it very well, especially in the width of the elytra, which in adstrictus 



