1888.] NATURAL SCIENCES OF PHILADELPHIA. 417 



the author, 625 Market street, Philadelphia, 1866. 8vo, pp. 159-j- 

 XLIV; i^lates 18, with colored duplicates; figures, 430. Bailliere 

 Brothers, New York; J. B. Bailliere, et Fils, Paris; Triibner & 

 Co., London ; C. Bailly-Bailliere, Madrid ; Asher & Co., Berlin. 



A Monograph of the Fresh water univalve mollusca of the 

 United States, in continuation of Prof S. S. Haldeman's work, pub- 

 lished under the above title. By George W. Tryon Jr. Published 

 by the Conchological Section of the Academy of Natural Sciences 

 of Philadelphia,. 1870. 8vo, pp. 238, plates 32. 



Amex'ican Marine Conchology : or descriptions of the shells on 

 the Atlantic coast of the United States, from Maine to Florida. 

 By George W. Tryon Jr.. member of the Academy of Natural 

 Sciences of Philadelphia. Published by the author. No. 19 N. 

 Sixth street, Philadelphia, 1873. 8vo, pp. 208 ; plates 44 ; figures 

 550. 



Smithsonian Miscellaneous Collections, (253). Land and Fresh- 

 Water Shells of North America. Part IV. Strepomatidse (Ameri- 

 can Melanians). By George W. Tryon Jr.. Smithsonian Institu- 

 tion, Washington, December, 1873. 8vo, pp. LV+435 ; 838 

 figures, intercalated with the text. 



Manual of Conchology ; Structural and Systematic; with illustra- 

 tions of the species. By George W. Tryon Jr., Conservator of the 

 Conchological Section of the Academy of Natural Sciences of Phila- 

 delphia. Published by the authoi\ Academy of Natural Sciences, 

 Corner Race and Nineteenth streets. 



Vol. I, 1879. Cephalopoda. 8vo, })p. 316; plates 112; figures 

 671 



Vol. II, 1880. Muricidre including Purpurinse, 8vo, pp. 289 ; 

 plates 70 ; figures 977. 



Vol. Ill, 1881. Tritonidse, Fusidne, Buccinidae. 8vo, pp. 310; 

 plates 87 ; figures 1287. 



Vol. IV, 1882. Nassidfe, Turbinellidttj, Volutidse, Mitridse. 8vo, 

 pp. 276; plates 58; figures 1345. 



Vol. V, 1883. Margiuellidte, Olividie, Columbellidse. 8vo, pp. 

 276; plates 63; figures 1351. 



Vol. VI, 1884. Conidse, Pleurotomidse. 8vo, pp. 400 ; plates 

 65 ; figures 1550. 



Vol. VII, 1885. Terebridre, Cancellariidre, Strombidse, Cyprseidse, 

 Ovulidse, Cassididse, Doliidse. 8vo, pp. 309 ; plates 75 ; figures 

 1301. 



28 



