24 THE NAUTILUS. 



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

 time to time I will be enabled 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. Rush, in letter to 

 Ed. 



Helicina occulta Say, has been re-discovered living in Avesteru 

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

 Allegheny Co., by Mr. S. H. Stupakoff of Swissvale, Pa. 



The old, old stoey ! — 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, Ind. One man realized $75 

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



EXCHANGES. 



(Exchange 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, Mingnsville, 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 Sphceritim and 

 Pisidium. — George T. 3Iarstop, care of State Savings Loan and Trust 

 Co., Quincy, III. 



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

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

 Fresh-Water, both U. S. and Foreign. — C. Broivne, 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 my collec- 

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



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

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

 Ijoiver Roxborotigh, Philadelphia, Pa. 



