24 'I'HK NAUTILUS. 



species of various geuera. As we are to return to that place from 

 time to time I will be enal)led to add to them. The next few days 

 I shall try to hunt up the H. elevata D'Orb, and the fresh-water 

 species surrounding Montevideo. — Dr. William H. Bush, in letter to 

 Ed. 



Helicixa occulta Say, has been re-discovered living in western 

 Pennsylvania at Wildwood and at Cayuga, on the Allegheny River, 

 Allegheny Co., by Mr. S. H. Stupakoffof Swissvale, Pa. 



The old, old story ! — A number of fine pearls, some of them of 

 considerable value, were found recently in mussel shells on the 

 shoals in White river, near Seymour, lud. Oiie man realized S75 

 from his find in a few weeks. — Phila. Public Ledger. 



EXCHANGES. 



(Excliange notices of moderate length will be inserted free for subscribers.) 



Cretaceous and Eocene fossils, minerals, agates, marine and 

 fresh-water shells, to exchange for rare marine shells, cloth-bound 

 books or agates. — Homer Squyer, Mingusville, Mont. 



Herkimer County Land and Fresh-water Shells to ex- 

 change for desirable species from other localities. Send lists and 

 receive mine. — Albert Bailey, Chepachet, N. Y. 



I HAVE several hundred unusually fine specimens of Limncea 

 megasoma Say, to exchange for specimens of Sphcerium and 

 Pisidium. — George T. Marston, care of State Savings Loan and Trust 

 Co., Quincy, III. 



Wanted. — INIarine univalves, especially of Mexico, Central and 

 •South America. Offered — many specimens. Marine, Land, and 

 Fresh-Water, both U. S. and Foreign. — C. Browne, Framingham, 

 Mass. 



Wanted. — To Exchange Northern Alabama Land and Fresh- 

 water Shells for shells from any other locality. Send lists and 

 receive mine. — H. E. Sargent, Woodville, Jackson Co., Ala. 



Marine, Land and Fresh-water shells to exchange for a pair of 

 good singing Canary birds. I will send my exchange list to any 

 one that has such to exchange, or for shells that are not in m^^ collec- 

 tion. — Thomas Morgan, P. 0. Box 164, Somerville, K. J. 



Wanted. — Area and Zonites, from any locality, in exchange for 

 British land and fresh-water shells. — Bobert Walton, Charles St., 

 I^ower Boxborough, Philadelphia, Pa. 



