26 



[Senate 



Order' VI. Plectognathi, 

 FAMILY GYMNODONTID^. 



Teteaodon , 



This fish, which belongs to the genus Tetraodon, and appa- 

 rently not described or figured in De Kay's Natural History, was 

 taken in the Hudson river in 1848, off Sing-Sing, Westchester 

 county, and presented by Joakim Urmey, of Sing-Sing. 



Sub-Class II. Cartilaginous Fishes. 

 Order I. EUutheropomi. 

 FAMILY STURIONID^. 



[Zoology— Pari V. 



AciPENSER oxYRniNcus, Skarp-TLosed SLurgeon. - - - - 346 



CRUSTACEA 



ORDER DECAPODA. 



i 



Zoology— Pari "VTI 



AsTACus BARTONii,* Freshwater Lobster^ or Crawfishy p. 23 



From West river, Warren county. 



Crangon septemspinosus,"! Bait Shrimp. 25 



From Haverstraw bay. 



• Presented by Pierre Van Coktlandt. 

 t Presented by John Holmes. 



