American Caraboidea 143 



set, coarsely, deeply, moderately closely punctate, the punctures gradu- 

 ally smaller and then obsolete posteriorly, the eighth as in color adensis; 

 second interspace about as wide as the next three combined, the apical 

 foveoles two in number; dorsal fovea single, coarsely impressed, at three- 

 sevenths. Length 3.35 mm.; width 1.2 mm. New York (Catskill Mts.), 

 — H. H. Smith. 



According to the classification of Mr. Fall, this species would 

 come near ohscurus Fall, of the California Sierras, but it is as much 

 below the average in point of size as that is above it. Embodying 

 the opinions expressed above I am disposed to suggest the following 

 list of the North American species of this genus: 



aeneus Hbst. coloradensis Csy. 



semistriatus Say nemoralis Fall 



americanus Harris sylvaticus Esch. 



confusus Lee. novemstriatus Lee. 

 punctatus Lee. quadrifoveatus Harr. i. litt. 



hardyi Putz. directus Csy. 



borealis Harris parvus Csy. 



simulator Fall obscurus Fall 



evanescens Csy. nitens Lee. 



sierranus Csy. semiopacus Esch. 



According to the principle recently adopted by Mr. Leng, of 

 renaming species bearing names which have been previously given 

 in the genus, whether or not these older names are synonyms, 

 obscurus Fall, of the above list, would have to receive another 

 designation ; for, as I see by the European list, there is an ohscurus 

 DTorre, which is a synonym of aquaticus. I believe this principle 

 to be unnecessary, however, and if generally adopted would give 

 rise to almost endless giving of new names throughout the field of 

 zoology. 



Trachjrpachus Mots. 



Trachypachys G. & H. 



The species of this genus are strikingly inharmonious, in general 

 habitus, with the other genera in this part of the Carabidae, re- 

 minding us much more of certain forms of Bembidion, such as 

 obliqulum or erasum, than they do of Elaphrus, Loricera and other 

 associates of this section. As a genus Trachypachus is peculiar, in 

 that the hind coxae attain the sides of the body. My collection 

 includes five species as follows: 



