ZOOLOGY. 183 



14. Cephalus. Sun-Fish. Jaa;* strong, bony; 6o</y termi- 

 nating abruptly, as if cut off in the middle ; dorsal^ 

 caudal^ aud nnalfms united. 



1.5. Tetrodon. Body roughened beneath with spines; jax3S 

 bony, divided at the point ; ventral fins wanting. 



16. Si/gnanthus. Pipe-Fish. Head small; snout long, 



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

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

 ventral Jins wanting ; bodij encrusted with many sided 

 scales. 



17. Centriscus. //t?«{/ lengthened into a very narrow snout ; 

 teeth wanting ; lower jaw longest ; breathing apertures 

 broad aud flat ; body compressed ; ventralfins united. 



18. Pegasus. iVIo/<//i beneath ; snow/ retractile ; upper javt 



elongated; breathing aperture heioxe the pectoral Jins ; 

 'fientral fins behind the pectoral. 



The numerous families of fishes contribute largely to the 

 comforts and support of Mankind; aad in some countries 

 constitute the principal portion of food ; in civilized coun- 

 tries they are variously applied, in ihis, and some other 

 nations of Europe, they 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; 

 N 4 



