June, 1914-] LeNG: NoTES ON SCAPHINOTUS. 139 



NOTES ON THE SPECIES OF SCAPHINOTUS DEJEAN 



INHABITING NORTHEASTERN AMERICA WITH 



DESCRIPTION OF A NEW SPECIES. 



By Charles W. Leng, 

 West New Brighton, New York. 



The tendency of the barrier created by the Allegheny Mountains 

 to separate distinct though closely related species in the tribe Cychrini 

 has already been exemplified in the final separation of Cychnis 

 gcrmari and andrczusi by Roeschke, and Cychrns indiaiicv and stenos- 

 tomus by Blatchley; a further example of the influence of the same 

 barrier will be found in the variations of Scaphinotns elevatiis, and 

 in the necessity of separating the eastern and western races of the 

 species heretofore known as Cychnis or Scaphinotns nnicolor. 



Scaphinotus was founded by Dejean for Cychrns elevatns and 

 nnicolor and contains those species in which the hind angles of the 

 thorax are so dilated as to project over the base of the elytra. 

 Authors have not agreed as to its standing and in our Check List, 

 based upon Dr. Geo. H. Horn's review of the genus/ it is treated as a 

 synonym, but in Dr. Roeschke's paper- the latest and most complete 

 study, embracing the Cychrini of the world, it receives recognition. 



The specific names that have been proposed, arranged chrono- 

 logically, are as follows : 



elevatus Fabricius, 1787, Mant. Ins., I, p. 198. 



nnicolor Fabricius, 1787, Mant. Ins., I, p. 198. 



heros Harris, 1839, Bost. Journ., II, p. 196. 



flammeus Haldeman, 1844, Proc. Ac. Nat. Sci. Phila., II, p. 54. 



dilatatus Leconte, 1853, Trans. Am. Phil. Soc, X, p. 398. 



tcnchricosns Roeschke, 1907, Mon. p. 141. 

 besides a number of names for species occurring in Colorado, New 

 Mexico and Arizona that are not within the scope of the present 

 paper. 



Of the eastern species 5". elevatns is by far the best known and 

 the most widely distributed. It is distinguished by its size, 15-23 



1 Trans. Am. Ent. Soc, VII, 1878. 



2 " Monographic des Carabiden-Tribus Cychrini," Annales Musci Nation- 

 alis Hungarici, 1907. 



