No. 50.] 39 



FAMILY HETEROPODA. 

 Argonaitta tuberculosa. The Tuherculated Argonaut, 



RADIATA. 



CLASS ECHINODERMATA. 

 Six species of Echinus. 



CLASS POLYPL 

 Saecinula musicalis. The Organ-pipe Coral. 



CATALOGUE OF SHELLS 



CONTRIBUTED TO THE CABINET OF NATURAL HISTORY 

 OE THE STATE OF NEW-YORK, 



PROM THE PRIVATE CABIITET OF JAMES LEWIS, OF MOHAWK, N. T. 

 NO. Habitat. 



1 PisiDiuM PALusTRE. Ditches and bogs, Mohawk. 



2 Cyclas securis, 15 sp. Cambridge and Grroton. 



3 Cyclas transversa, 15 sp. Erie canal, Mohawk river, &c. 



4 Cyclas elegans, 7 sp. Massachusetts. 



5 Limnea catascopium. Erie canal. 



6 Cyclas partumeia, 7 sp. Mass. within ten miles of Boston. 



7 Cyclas similis, 10 sp. Schuyler's lake, Otsego county. 



8 Cyclas (rug osa). Erie canal : very plenty. 

 9 



10 Physa . Vicinity of Mohawk. 



11, 12 Specimens of local character not entered. 



13 Helix monodon, 8 sp. Vicinity of Mohawk. 



14 Helix alternata, 12 sp. Vicinity of Mohawk. 



