ZOOLOGY. 183 



1 4. Cephalus. Suv-Fish. Jrm's strong, bony; Sorf?/ termi- 

 nating abruplly, as if cut olF in the middle ; dorsal^ 

 caudal, and analfms united. 



15. Tetrodon. Body roughened beneath with spines; jaws 

 bony, divided at the point ; ventral fins wanting. • 



16. Sygnanlhus. Pipe-Fisii. Head small; snout long, 



cylindrical, turning up at the end ; orifice to the gills 

 none ; breathing aperture on the hind part of the head ; 

 ventral fins wanting ; body encrusted with many sided 

 scales. 



17. Centriscus. /:fe« J lengthened into a very narrow snout ; 



teeth wanting ; lower jaw longest ; breathing apertures 

 broad and flat ; body compressed ; ventralfms united. ' 



18. Pegasus^ Mouth henea.th ; snout retTSiCtWe ; upper jai9 



elongated; breathing aperture before ih.e pectoral fins ; 

 nenlrul fins behind the pectoral. 



The numerous families of fishes contribute largely to the 

 comforts and support of Mankind ; and in some countries 

 constitute the principal portion of food ; in civilized coun- 

 tries they are variously applied, in this, «nd some other 

 nations of Europe, tiiey are among the principal articles 

 exported, either in a dryed or pickled state ; the curing of 

 which affords employment to thousands of their inhabitants. 

 The most valuable as articles for exportation, are the Cod, 

 Salmon, and Herring tribes, the two first of which are gene- 

 rally caught by the hook and line, and the latter in nets; 



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