XXXvf CONTENTS OF VOL. TI. 



Page. 

 Tribe II. Lips unfit to act as a sucker. Squalus. 



Raia. Chimera. . 375 



Subdivision II. Branchiae free. 

 Accipenser. Spatularia. 



Order II. Osseous Fishes. 



Subdivision I. Jaws imperfect. 

 Tribe I. Jaws exposed and covered with ivory. Dio- 



don. . . . 381 



Tribe II, Jaws covered, and supporting ordinary 



teeth. Balistes. Ostracion. 



Subdivision II. Jaws perfect. 



Tribe I. Gills in tufts. Syngnathus. 383 



Tribe II. Gills continuous. 



A. Malacopterygious Fishes. 



(I.) Ventral fins abdominal. Salmo. Clupea. Esox. 

 Cyprinus. Silurus. . 384 



(II.) Ventral fins thoracic or jugular. 



a. Sides similar. 



(AA.) With a sucker, Cyclopterus. Echeneis. 38? 



(BB.) Destitute of a sucker. Gadus, 388 



b. Sides dissimilar. Pleuronectes. . ib. 

 (III.) Ventral fins wanting. 



aa. Gill opening small. Murena. Gymnotus, . 389 

 bb. Gill opening apparent. Ophidium. Ammodytes. ib. 



*. Acanthopterygious Fishes. 



I. Taenioidae. Cepola. Gymnetrus. Trichiurus. 



Lepidopus. . . 390 



