March, i9i8.] RoBINSON : BEETLES COLLECTED IN VIRGINIA. 33 



Ptinid.e. 



31. No. 5350, Bostrychus bicornis, four. 



SCARAB.EID.E. 



32. No. 5608, Clceotus aphodioides, three. 

 23. No. 5609, Clceotus globosus, four. 



Cerambycid.^e. 



34. No. 5985, Smodicum cucujiforme, six. 



35. No. 6443, Urographis fasciatus, one. 



Tenebrionid.e. 



2,6. No. 7391a, Nyctobates barbata, three. 

 27. No. 7413. Xylopinus saperdioides, one. 



38. No. 7414, Xylophinus rufipes, one. 



39. No. 7546, Helops micans, two. 



Calandrid.e. 

 4c. No. 9026, Cossonus concinnus, abundant. 



AxTIIRIBID.i:. 



41. No. Piezocorynus virginicus Leng, abundant. 



42. No. 9235, Choragus nitens, abundant. 



This beetle gave me an instructive lesson. The little, rounded, 

 shiny-black creatures were abundant on the bark of the trunk and I 

 could easily have taken a large number, but the casual glance that I 

 gave to the first led me to think that it was a common species of 

 Triaclnis and I therefore took only three, this in spite of the fact that 

 dead bark was no place to find Triachits and also that there was such 

 great variation in the size of the individuals. Later in the fall I 

 failed to identify the specimens as belonging to the Chrysomelida?, 

 and I sent them to Mr. Leng, who was at first misled by my attempt 

 to place them in Triaclnis, but who finally ran them down. 



