ANATOMY OF VERTEBRATES. 11 



Suborder I. Pharyngognathi. 



Fam. 1. ChronudcB. Ex. Chromis. 



2. Ci/clo-lahridce. Ex. Wrasse. 



3. Ctaw-labridm. Ex. Pomacentrus. 



Suborder II. Acastthopteki veri. 



Fam. 1. PercidcE. Ex. Perch. 



2. Squammipennes. Ex. Cbffitodon. 



3. Sparidce. Ex. Sea-bream, Gilthead. 



4. SciamidcE. Ex. Malsre. 



5. Ldhijrinthobranchii. Ex. Anabas or Tree-climber. 



6. MnfiUida;. Ex. Mullet. 



7. Afhejinidce. Ex. Sand-smelt. 



8. Sphyrmiidce (cycloid). Ex. Barracuda. 



9. Scomhmda (cycloid). Ex. Mackerel. 



10. ScUrogenidce. Ex. Gurnard, Miller's thumb. 



11. Tauioidei. Ex. Riljand-fish. 



12. Teutla/ida. Ex. Lancet-fish, 



13. Fistuhiridce. Ex. Pipe-mouth. 



14. Gobiida. Ex. Goby. 



15. BknnudxB (cycloid). Ex. Wolf-fish. 



16. LopldidcE (skiu muricate or naked). Ex. Angler.' 



Order VI. PLECTOGNATHI. 



Endoskeleton partly ossified ; exoskeleton as ganoid scales, 

 jalates, or spines ; ventrals wanting in most ; maxillary and pre- 

 maxillary immoveably connected on each side of the jaw; swim- 

 bladder without air-duct. 



Suborder Scleeodermi. 

 Fam. 1. Balistini. Ex. File-fish. 



Suborder Apleuri (ribless). 



Fam. 1. Ostraciontida. Ex. Trunk-fish. 

 2. Gymnodontida. Ex. Globe-fish. 



' This selection of the chief family-diversities of the vast acaiithopterous order is 

 designed, like the families cited under other orders, merely to exemplify it by familiar 

 fishes with vernacnlar names. For the characters and affinities of all the present 

 known acanthopterous families, see Dr. Giinther's excelleut work, clxxiv., 

 vol. iii. 



