8 University of Michigan 



species of Leucichthys the general tone is silvery and individuals 

 are taken whose color differs in no material way, excepting 

 heavier pigmentation, from specimens of olpcnac just described. 

 Many examples, however, show very little greenish color on 

 the back. In such individuals the cranial patches are faint pea- 

 green and the cranial cartilages and the fin bases have a sepia 

 tone. The back is of a very pale blue-grey tint with traces of 

 pea-green beneath. The iridescence of the sides is pinkish. 



