6 2 Conchology — By Exchange. 



ESTATE OF Dr. GEO. L. HYSLOP, New York City. 



A collection of Marine Shells containing about 50 genera and 500 



specimens. 



WM. M. METCALFE, New York City. 



40 Specimens of Physa ancillaria Say. 

 4 " " Plano?'bis bicarinata Say. 



Dr. ROBERT T. MORRIS, New York City. 



40 Specimens of recent and fossil shells from Hudson Bay. 

 Miss LUCY A. SANDFORD, New York. 



2 Specimens of Argonauta nodosa Sol. 



I " " Argonauta argo Linn. 



Dr. WM. M. WHEELER, Bronxville, N. Y. 



35 Specimens Meleagrina ala-perdicis Rv. , Bahamas. 



22 " Ltzvicardium s erratum L., Bahamas. 



35 " Neritina Virginia L. , Bahamas. 



3 " Orthalicus undatus Brug., Florida. 



4 " Ovula uniplicata Sow., Andros Is. 



8 " Cylindrella bahamensis Pfr., Nassau. 



1 " Oleacina solidula Pfr., Nassau. 



2 " Stenogyra octona Chem., Nassau. 



By Exchange. 



THEODOR KORMOS, Budapest, Hungary. 



26 Species of Land and Fresh-water Shells from Hungary. 

 WM. M. METCALFE, New York City. 



6 Specimens of Cyprcea albuginosa Mawe. 



I " 



" " physis Broc. 



I " 



" " lentiginosa Gray. 



2 " 



" " microdot! Gray. 



I " 



" " adansoni Gray. 



I " 



" " erythrceensis Beck. 



JOHN RITCHIE, Jr., Roxbury, Mass. 



5 Specimens Ancylus kirtlandi Walker. 



4 " CcBcum orcutti Dall. 



2 " Cepolis maynardi Pils. 



1 " Ganesella myomphala var. fusca Gude. 



4 " Ganesella turrita Gude. 



1 " Helix xanthophaes Pils. 



I " Helix faunus Phil., var. ritchieana Pils. 



1 " Omphalitis euryomphalus Pfr. 



4 " Pyramidula pauper Gld. var. depressa A. Ad. 



2 " Pyramidula leptata Smith. 



16 " Pyrgulopsis mississippiensis Pils. 



2 " Rotula serrula Bens. 



