10 ANATOMY OF VERTEBRATES. 



Suborder I. Apodes. 



Fam. 1. SymbranchidcB. Ex. Cuchia. 



2. MuranidcB. Ex. Eel. 



3. Gymnotida. Ex. Gymnotus. 



Suborder II. Aedominales. 



Fam. 1. Heteropi/yii. Ex. Amblyopsis. 



2. Clupeida;. Ex. Hening. 



3. SalmonidcB. Ex. Salmon. 



4. Scopelidce. Ex. Saurus. 



5. Characinid(E. Ex. Myletes. 



6. Galaxidce.. Ex. Galaxias. 



7. Esocidce. Ex. Pike. 



8. MormyridcB. Ex. Mormyrus. 



9. Cyprinodontida:. Ex. Umber. 



10. Cyprinida'. Ex. Carp. 



11. Siluridce. Ex. Sheat-fish. 



12. Alepisauridce. Ex. Marine Sheat-fish. 



Suborder III. Phartngognathi. 

 Fam. 1. Scomher-esocidcE. Ex. Saury-Pike. 



Order IV. ANACANTHINI. 



Endoskeleton ossified ; exoskeleton in some as cycloid, in others 

 as ctenoid scales ; fins supported by flexible many-jointed rays ; 

 ventrals beneath or in advance of the pectorals, or wanting ; swim- 

 bladder, when present, Avithout a duct. 



Fam. 1. OpJiidid(F. Ex. Ophidium. 



2. GadidcB. Ex. Cod. 



3. Eleiironcctidce. Ex. Plaice. 



Order V. ACANTHOPTERI. (j 



Endoskeleton ossified; exoskeleton, in most, as ctenoid scales; 

 fins with one or more of the first rays unjointed or inflexible 

 spines ; ventrals, in most, beneath or in advance of the pectorals ; 

 duct of swim-bladder obliterated. 



