278 The University Science Bulletin. 



PLATE XXVII. 



1. DrcEculacephala noveboracensis (Fitch). 



2. Drceculacephala mollipes (Say). 



3. Drceculacephala reticulata (Signoret). 



4. Errhomenellus montaniis Baker. 



5. Helochara communis Fitch. 



6. Pagaronia tripunctata (Fitch). 



