103 



EXPLANATION OF PLATES;" 



PLATE I. 



Corn Bill Bugs. 



Fig. 1. The Clay-colored Bill Bug, Splicnophorus ocJirciis; mag- 

 nified two and one third diameters. 



Fig. 2. Sphenophorus periinax; magnified three diameters. 



Fig. 3. Sphenophorus rohusius; magnified three and one third 

 diameters. 



Fig. 4. Sphenophorus cariosus; magnified four diameters. 



PLATE IL 



Corn Bill Bugs. ^ 

 f 



Fig. 1. Sphenophorus sculpUlisj magnified four diameters. 



Fig. 2. Sphenophorus scopariusj magnified three and one half 

 diameters. 



Fig. 3. Sphenophorus melanocephalus; magnified three and two 

 thirds diameters. 



Fig. 4. Sphenophorus pldcidus; magnified five diameters. 



PLATE in. 



Corn Bill Bugs. 



Fig. 1, Sphenop>horv s parvnlus; magnified five and one third 

 diameters. 



Fig. 2. Sphenophorus minimus; magnified six diameters. 



* All the drawingB for these platen were made at the office, by Mr. A. M. Wester gren. 



