A. B. WOLCOTT 67 



NEW SPECIES OF COLEOPTERA OF THE TRIBE 

 CLERINI, WITH NOTES ON OTHERS 



BY A. B. WOLCOTT 

 Chicago, Illinois 



The ])rinuiry intention of the writer was to give in this paper 

 merely the description of a recently acquired and very interest- 

 ing species of Enoclerus. In looking over the material in my 

 collection, however, a few other non-descripts came to my 

 notice and, as most of these have been in my possession for many 

 years, it was thought advisable to make them known now. 

 To these descriptions I have added notes on some known species. 



Placopterus subcostatus Schacffer 



Clems thoritciriis var. subcosldlus Scliarffer, Jouni. X. Y. Knt. Soc, xxv, 

 p. V.n, 1017. 



This form was descriljed as a variety of thoracicua Olivier, and 

 placed by me (in Leng's Catalogue of Coleoptera) as a variety 

 of cyanipennis Klug. Renewed stud}' of my material shows 

 beyond a doubt that I was in error in placing this as a variety 

 of cyanipennis, as subcostatus is entirely distinct, not alone by 

 the longer, less broadly rounded prothorax, but also by the 

 color of the decumbent pubescence, which in subcostatus is dark 

 brown (nearl}^ black in one specimen from Marion County, 

 Florida). In cyanipennis the decumbent pubescence is grayish- 

 white, although the erect hairs arc black, just as they are in P. 

 thoracicus. 



I am unwilling to believe that the color of the vestiture and 

 the scul{)ture of the elytra arc of less than specific importance, 

 and hence must regard subcostatus as a valid and distinct species. 



Our few species of Placopterus may be separated by means 

 of the following table: 



Decumbent pubescence of elytra l)io\vn or black subcostatus Schaeffer 



Decumbent pubescence of elytra whiti.sh or gra\'ish. 



Prothorax sliort, sides broadly and evenly rounded to near the ba.><e. 

 Prothorax reddish, the posterior marjiin narrowly, the anterior margin 

 broadly, blue, elytra dark blue cyanipennis Klug 



TRANS. AM. ENT. SOC, XLVUI. 



