Conchology — By Exchange. 51 



By Purchase. 



1 Large Quartz crystal from California. 

 10 Twinned Calcite crystals from Joplin, Mo. 

 1 Specimen of Arsenic (native) from Alden Island, British Columbia. 



Carnotite from Dolores Co., Colorado. 



Fayalite from Rockport, Mass. 



Cyanite from St. Gothard, Switzerland. 



Babingtonite from Barend, Italy. 



Granuline from Mt. Vesuvius, Italy. 



CONCHOLOGY. 

 By Donation. 



J. H. BATTY, New York City. 



5 Specimens of H. (Ly since) kumboldtiana, Val. , Durango, Mexico. 

 WILLIAM BEUTENMULLER, New York City. 



114 Specimens of land shells from the Great Smoky Mts. N. C. 

 BARNUM BROWN, New York City. 



309 Specimens, representing 21 species of the following genera: 

 Chiton, Patella, Fissurella, Nacella, Trophon, Mactra, Mono- 

 ceras, Petricola, Saxicava, Photinula, Modiolarca and Natica, 

 from Patagonia, S. A. 



F. H. CHURCH. 



8 Specimens of Tapes variegata, from Corea. 

 T. S. CLARKE, Palm Beach, Florida. 



1 Specimen of Valuta spirata, Phil., from Palm Beach, Florida. 

 F. A. CONSTABLE, New York City. 



464 Specimens, including the following genera: Ampullaria, Unio, 

 Batissa, Melania, Hemiplecta, Cryptosoma, Xestina, Amphi- 

 dromus, Camcenella, Xesta, Camcena, Macrochlamys, •Clausilia, 

 Gamieria, Streptaxis, Hybocystis, Platyrhaphe, Opistophorus, 

 P seudotrochatella, Coptochilus, Cyclophorus, Pupina, Alyccsus, 

 Procyclotits, Pterocyclus, Platopylis, Eulota, Buliminus, Pro- 

 sopeas, Plectotropis, Scabrina, Leptopo??ia, Helicina and Pseudo- 

 don from Cochin China. 

 L. P. GRATACAP, Staten Island, N. Y. 



1,400 Specimens of marine gasteropods from Vineyard Sound, Mass. 

 Rev. R. B. POST, New York City. 



7 Lamellibranchs from New York and Maine. 

 BRYANT WALKER, Detroit, Mich. 



3 Specimens of Planorbis companulatus, Say, Mich. 



4 " Aiicy lus kirklandi, Walker, Mich. 

 Dr. WILLIAM MORTON WHEELER, New York City. 



3 Specimens of Ashmunella cooperi, from Pecos, New Mexico. 



By Exchange. 



Mrs. IDA S. OLDROYD, Burnett, California. 



1,068 Specimens, including 151 species of marine lamellibranchs 

 and gasteropods from California. 

 SLOMAN ROUS, Brooklyn, N. Y. 



10 Specimens of marine shells from South Africa. 

 WILLIAM WEEKS, Brooklyn, N. Y. 



38 Specimens of Marginella apicina, Nassau. 



