Bui. 41 7, U. S. Dept. of Agriculture. 



Plate XVII. 



Species of Calosoma and their Larv/e. 



A. — Calosoma obsoletum: Adult. B. — Calosoma haydeni: Adult. C. — Calosoma cancellation: 

 Adult. D. — Calosoma obsoletum: Third-stage larva. E. — Calosoma haydeni: Third-stage 

 larva. F. — Calosoma semilaeve: Third-stage larva. G. — Calosoma cancellatum: Third- 

 stage larva. A-C, about natural size; D, F, X2y 2 ; E, X'Qi; G, X3. (Original.) 



