386 T. D. A COCKERELL. 



EXPLANATION OF PLATE V. 



FIG. 26. Pimephales anuli. Lunkasoos Lake, Maine. Bureau of Fisheries. 

 (Note straight edge of skin across middle of scale.) 



FIG. 27. Gobio flm'iatilis (G. vulgaris). R. Neckar near Canstatt (Stuttgart 

 coll.) Brit. Museum. 



FIG. 28. Ericymba buccata. Wild Cat Creek, Indiana. Bureau of Fisheries 

 Figure reversed. 



FIG. 29. Ericymba buccata. Wild Cat Creek, Indiana. From subdorsal region, 

 in front of dorsal fin. 



FIG. 30. Gila robusta. Tempe, Arizona. Stanford University. 



FIG. 31. Kneria cameronensis. Brit. Museum. 



