APPENDIX 



133 



SUB CLASS II. 



CARTILAGINOUS FISHES. 



Skeleton cartilaginous ; cranium divided by indistinct sutures ; gills 

 generally tixed ; gill membrane without rays ; intermaxillaries and max- 

 illaries wanting or rudimentary. 



The remaining tamilies, including the sturgeons, raijs, shai-ks, saw 

 fish, skates, lampreys, &:c., are foreign to the purpose of this work, and 

 therefore need not be enumerated. 



THE PEARCH. 



i 



