THE NAUTILUS. 129 



during the past mouth and the specimens and suites received are 

 magnificent. It should be borne in mind : 



1st. That donating to the Collection is purely a voluntary mat- 

 ter on the part of members. 



2d. That none but the finest kinds of specimens are accepted. 



3d. That all shells must have the localities accurately designated. 



4th. That consignments should be forwarded to the President, 

 care of Academy of Natural Sciences, 19th and Race Sts., Philadel- 

 phia, at which institution the Phila. members of the Association 

 meet at intervals, and prepare, label and mount the shells for per- 

 manent exhibition. 



To avoid duplicating, it would be well for members to forward to 

 the President lists of such shells as can be sent and he will erase the 

 names of the species already received, and return the lists to the 

 senders. 



Donations to United States Collection. 

 Since last announcement, the following have been mounted and 

 placed in the Collection. [Names of donors annexed.] 



H. Moores, Columbus, Ohio. — 



A lot of fresh-water shells including 12 species of Strepoma- 

 tidae ; 3 of Paludina ; Sphaerium solidulum and transversum ; 

 Pyrgula Nevadensis, Stearns ; Bythinella obtusa, Lea and Lim- 

 naea humilis, Say and exilis, Say. Also Helix clausa, Say. 



E. R. Mayo, Boston, Mass. — 



16 species of Marine Shells of New England, including Astarte 

 sulcata, CJosta, and castanea. Say ; Chrysodomus decemcostatus. 

 Say; Buccinum undatum, Linn, and ciliatum, Fabr. ; Leda 

 limatula. Say and thraciaeformis, Storer ; Natica flava, Gld. 

 and canaliculata, Gld., and Pecten Magellanicus, Lam. 



J. A. Singley, Giddings, Tex. — 



8 species of Eocene fossils from Moseley's Ferry and Wheelock, 

 Tex., including Surcula Desnoyersii, Lea and Buccitriton Tex- 

 anum, Gabb. 



John Ford, Philadelphia, Pa. — 



Anodonta Tryonii, Lea; IMartesia cuneiformis, Say; and 

 Lioplax subcarinata, Say. 



