Figs. 55-60. — Barbels and tactile sense organs. (After GOODE in U. S. F. C.) 

 55. Cusk, Ophldiiim. 56. Drum-fish, Pogonias. 57. Sea-raven, Hemitriptcrus. 

 58. Catfish, Amiurus. 59. Spoon-bill sturgeon, Polyodon (ventral view of snout). 

 60. Sea-robin (Gurnard) , Prlonotus. 



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