160 ZOOLOGICAL PHILOSOPHY 



22. Leptosome Holdbranchs. [Slender- bodied. H. E.] 

 Chetodon. Chetodipteron. 



Acanthimon. Pomacentrus. 



Pomadasis. Acanthopod. 



Pomacanthus. Selene. 



Holacanthus. Argyriosua. 



Enoplosus. Zeus. 



Gljrphisodon. Galeoides. 



Acanthurus. Chrysostose. 



Aspisurus. Capros (boar-fish). 



Abdominal Holobranchs. 

 Inferior paired fins placed a little in front of the anus. 



23. Siphonostome Holobranchs. [Tube-like mouths. H. E.] 

 Fistularia. 

 Aulostoma. 

 Solenostoma. 



24. Cylindroaome Holdbranchs. [CyUndrioal. H. E.] 

 Cobitis. Amia [Ganoid. H. E.]. 



Misgurnus. Butirinus. 



Anableps. Tripteronotus. 



Fundulus. Ompolk. 



Colubrine. 



25. Oplophore Holobranchs. [Armed. H. E.] [Gatfishes. H. E.] 



Silurus. Ageniosus. 



Maoropteronotus. Macrorhamphosus (snipe- 

 Malapterurus. fish). 



Pimelodus. Centranodon. 



Doras. Lorioaria. 



Pogonathus. Hypostome. 



Cataphractus. Corydoras. 



Plotosus. Tachysurus. 



26. Dimerid Holobranchs. [Two-membered. H. E.] 

 Cirrhites. Polynemus. 

 Cheilodaotylus. Polydactylus. 



27. Lepidome Holobranchs. [Scaly opercula. H. E.] 

 Mugil (grey mullet). Chanos. 

 Mugiloid. Mugilomorus. 



28. Oymnopome Holobranchs. [Naked opercula. H. E.] 



Argentina. Clupanodon. 



Atherina. Gasteropleucus. 



Hydrargyrus. Mene. 



Stolephorus. Dorsuaria. 



Euro. Xystera. 



Clupea (herring). Cyprinus (carp). 

 Mystus. 



