150 [Jmie, 



LIST OF THE COLEOPTERA COMMON TO BRITAIN & NORTH AMERICA. 

 BY G. C. CHAMPIOTf, F Z.S. 



In the Transactions of the American Entomological Society, xxi, 

 pp. 345-416 (October, 1894), Dr. John Hamilton gives a carefully 

 revised " Catalogue of the Coleoptera common to North America, 

 Northern Asia and Europe, with distribution and bibliography." The 

 total number of species enumerated is 594, of which 216 appear to 

 have been introduced into North America. The remainder are com- 

 mon to North America and Europe, and with the exception of 50 

 (which almost certainly occur there) to Northern Asia also. As 

 no fewer than 384 of the species enumerated are found in Britain, 

 I think a list of these cannot fail to be of interest to British Coleop- 

 terists. The species (78) marked * are more or less cosmopolitan ; 

 those (111) marked f are, according to Dr. Hamilton, probably intro- 

 duced in North America; those (23) marked % have not yet been 

 recorded from North Asia ; and those (172) without special mark are 

 apparently endemic in Britain, the continent of Europe, and North 

 America. An analysis of the list appended below shows that nearly 

 all the Clavicornia are cosmopolitan, and the Heteromera also, the 

 Melandryida (2) and Pythidce (1) excepted. All the Curculionid(S hut 

 ten appear to have been introduced into North America. The endemic 

 species common to Britain and North America belong to the Stapliyli- 

 nidcB (63), DytiscidcB (22), Oarabidce (17), Chrysomelidcs (12), CurciiU- 

 onidas (11), HydrophilidcB (11), Coccinellidce (7), SiJphidcd (4), Elate- 

 ridae (4), HisteridcB (3), Scolytidce (3), Gyrinidae (3). 



In the following list, whicb includes 384 species, I have adopted 

 the nomenclature of Sharp and Fowler's " Catalogue," in preference 

 to that of Dr. Hamilton, as it will be more easily understood by British 

 students. LymexyJon navale, L., and Latheticus oryzcB,C 0. Waterh., do 

 not appear to have yet reached North America ; it is possible, however, 

 that L. sericeum, Harris, may not be distinct from L. navale, L. Dr. 

 Hamilton's Catalogue tends to show that there is no true line of de- 

 marcation between the Nearctic and Pala?arctic regions, many northern 

 species being common to both continents. To further emphasize this 

 it may be noted that very many genera are common to Europe and 

 North America, in which the Nortb American representatives are 

 extremely closely allied to the European. 



fCarabus granulatus, L. Elaphrus lapponieus, G-yll. 



t „ iiemoralis, Miill. Blethisa multipunctata, L. 



Elaphrus riparius, L. Notiopliilus aquaticus, L. 



