PLATE 16. 



Fig. 24 (c) — Amiurus natalis lividus (Raf.) Sot. 

 Kinston, N, C. Reduced. 



Fig. 25 — Amiurus iiatalis coenosus (Rich.) Jor. 

 L. Micliigan. Keduced one-half. 



Fio. 26— Amiiirus natalis coenosus (Rich.) Jor. 

 Late Michigan. Keduced one-lial±. 



