EIGENMANN 



r 







*% 



# 



*v. 



B 



D 



Photographs of the tactile organs of Amblyopsis and Chologaster. 



A. Head of Amblyopsis from above, showing tactile ridges. 



B. Same head from side. Tactile organs especially numerous about mouth. 



C. Head of Chologaster papilliferus, from above, under slightly greater magnification 



than A. 



D. Same head, from side, especially showing tactile organs about mouth. 



