PLATE IX. 



HOPLADELUS OLlVARiy Gill. 



Fig. 1. Side view of fish, illustrating the peculiar form of the body and fins. 



Fig. 2. Dorsal view of fish to show its width aud the form of the head. 



Fig. 3. The head from below, with its iiiauj' (twelve) aud broad brauc-hiostegal ra.ys. The lower Jaw protrudes be.voud 



the upper. 

 Fig. 4. The opeu mouth, with its broad bauds of miuute villiform teeth, aud the posterior exteusiou of the iutermax- 



illary bauds. 

 Fig. 5. Intended to illustrate the appearance of the skin. 



