40 GEO. H. HORN, M. D. 



EXPLANATION OF PLATE IL 



Fig. 1. — AmhlychUa cylindriformis, Say, lateral view of larva. 

 Fig. 1, a. — Dorsal aspect. 



Fig. 1, b. — Head, pro- and mesothorax, much enlarged. 

 Fig. 1, c. — Head, under side. 



Fig. 1, d. — Antenna. , 



Fig. 1, e. — Mentura and maxilla. 

 Fig. 1, f. — Leg, front view. 



Fig. 1, g. — Hook bearing plate of fifth abdominal segment. 

 Fig. 2. — Omus Dejeani, Reiche, lateral view of larva. 

 Fig. 2, a. — Head, pro- and mesothorax. 

 Fig. 2, b. — Head, under side. 

 Fig. 2, c. — Mentum and maxilla. 

 Fig. 2, d. — Hook bearing plate. 

 Fig. 2, e. — Antenna. 



Fig. 3. — Tetracha Carolina, Linn., lateral view; nearly twice natural size. 

 Fig. 3, a. — Head, pro- and mesothorax. 

 Fig. 3, b. — Head, under side. 

 Fig. 3, c. — Mentum and maxilla. 

 Fig. 3, d. — Antenna. 

 Fig. 3, e. — Hook bearing plate. 



Fig. 4. — Cicindela repanda, Dej., nearly twice natural size. 

 Fig. 4, a. — Head, pro- and mesothorax. 

 Fig. 4, b. — Head, under side. 

 Fig. 4, c. — Antenna. 



Fig. 4, d. — Dorsal view of fifth abdominal segment. 

 Fig. 5. — Diccelus {costatus? purpuratusf), dorsal view. 

 Fig. 5, a. — Head and prothorax above. 

 Fig. 5, b. — Head beneath. 

 Fig. 5, c. — Head and prothorax, side view. 

 Fig. 5, d.— Leg, 



Fig. 5, e. — Ventral aspect of an abdominal segment, showing the arrangement 

 of the plates. 



