EXPLANATION OF PLATE VIII. 



Fig. 1. Mus exulans, Peale. 



o. Skull in profile ; enlarged 1 diameters. 



b. Ditto, from above ; ditto. 



c, Ditto, from below ; ditto. 



d. Upper molars ; greatly enlarged. 



e, Hind foot ; natural size. 

 /. Ear; ditto. 



Fig 2. Mulloides samoensis, Giinther. 



a. Scale from anterior portion of lateral line, showing branched 



tube; enlarged. 



b. Scale from posterior portion of lateral line showing bifurcated 



tube; enlarged. 



c. Serrature of scale ; greatly enlarged. 



Fig. 3. Ophichthys colubrinus, Boddaert. 

 Anterior portion of body. 



