979 



AMERICAN COLEOPTERA. 



^er Catalogue to /„,>,,. In the Liatof ^^^63) the 



WW name is lost sight of in its relation to Ascofor, and is there „iven 



naTin ended To he applied to another species and was so used by 



"in order to avoid further confusion the name Leco„«, should 



be allowed to stand. ^ ^ b ^ 



vl. nigroaeneus, Ha. — ADunuaui. num vy 

 species described as lutosus, 6Vo,r/i. 



II>YBIUS. 



1 ater De Geer.-To this ungularis, Lee, must be referred 



/ £U Lee. fide Shp., does not seem to be correctly ulenUfied. 



The true ^^V^^^ sWd be referred . 

 I. angustior, Gyll. — lo tins picipes, /v< V /-, 



COPTOTOMUS. . 



a obsevrus, Shp.-I bave very great doubt of the distinctness ot tins 



species. 



RHANTUS. 



R. obscurus, Shp., is flavogriseus, Crotch. 



R. Imgipes, Shp., was regarded as a mere color vanety of the pre- 

 ceding by Crotch, and, I think, correctly. 



Rvlebeius SI p.-While I can separate specimens winch agree with 

 Dr Sha^rLcription, I do not believe the species distinct from bmo- 



tatus, Harr. 



R. discedens, Shp., is the female of tortus, Lee. 



R. serlcans, Shp., is the species recorded m our hsts as notatus, Fab., 

 and, I think, not distinct, 



COLVWBETES. 

 ft Orotchi, Shp., is strigatus, Lee. 



ft «„„«, Leo, **«*, Harr., rugipenn^ Shp.-Afte * studj 

 of the large series iu our cabinet* I arrive at the following resuta, . 



The miles, from whatever part of our territory, are identical The 

 female, however, vary. The principal forms are (1) those with the 

 „ pturei as in the male ; (2) those with the thorax more decd- 

 X^nJulate; (3) those with the thorax much ™re coarsely and 

 deeply vesiculate, and the transverse strigae of the elytra deeper on the 

 disc much finer at sides and apex. 



I tlk this condition of affairs is indicative of polymorphism m he 

 female. A similar polymorphism in Agabus congener and b.pustulatus 

 has been ably elucidated by Dr. Sharp. 



I fUnk the throe species above named should be united under the 

 name of sculptilis, Harr. 



