326 MEMOIRS ON THE COLEOPTERA 



Reise, 1860, page 93, for our species, or for the similar Siberian 

 species cancellatus, which is considered a synonym of Randall's 

 species in the Siberian catalogue." In a male of punctatissimus 

 very kindly sent by Mr. Leng, taken in Newfoundland, there is a 

 semicircular impression at the abdominal apex, shallow and with 

 flat rugulose surface; it does not differ even varietally from a 

 female in my collection, taken by Sherman in Labrador. As 

 punctatissimus is well known, though not abundant, no further 

 reference to Lyperopherus will be made in the present work. 



In the most recent European catalogue nearly sixty generic and 

 subgeneric names are united under Pterostichus. The utility of 

 this course is not apparent; it renders the subject no easier for the 

 student, more greatly complicates nomenclature and furthermore 

 does not express the actualities as found in nature. No very useful 

 or final revision of the subfamily could be formulated without in- 

 cluding the entire Pterostichid fauna of the world at large, and not 

 improbably some European groups, already named, may be among 

 the thirty- two appearing in the above provisional table of our own re- 

 stricted fauna; only seven or eight of these are at present monotypic. 



Myas Dej. 



This genus is mentioned at the present time only to call attention 

 to an evident mistake in our lists; foveatus Lee., is given as a syno- 

 nym of cyanescens Dej., whereas a reference to the descriptions shows 

 beyond doubt that cyanescens is a synonym of cor acinus Say, and 

 that both the latter and foveatus are valid species. The striae are 

 described as punctate both in coracinus and cyanescens and as com- 

 pletely impunctate in foveatus; the form of the thoracic side mar- 

 gins is also wholly different in the two species, making identifica- 

 tion so certain that the synonymy proposed, apparently by LeConte 

 himself (Bull. Bk., Dec. 1882), is wholly unaccountable. The ely- 

 tra in foveatus are described by LeConte as obsoletely violaceous 

 and shining; in my two examples, from Massachusetts and Lake 

 Champlain, the elytra are bright aeneo-violaceous in lustre. 



Cylindrocharis n. gen. 



The general appearance of the few known species allied to ros- 

 trata Newm., is so peculiar that I think there can be but little doubt 



