367 



The Nautila;:, a monthly devoted to the interests of Cod- 

 chologists. Editors : H. A. Pilsbry et G. W. Johnson. 



Vol. XV, n» o, september 1901. 



Contents : J. B. HENDERSON, Jr. A uew jiinuiican 

 Adamsiella [A Jarvisi n. sp., figurée]. — H. von IHKRING. 

 The Uniouidœ of North America. — R. E. G. STEARNS. 

 An abnormal Chiton. — 0. A. CRANDALL, The american 

 PhyssB [Physa Walkeri n. sp.]. — W. H. D.ALL and 

 P.BARTSCH.A new californian Bittium [B. californicum 

 D. sp.]. — F. C. BAKER. Limuaea auricularia in America, 

 — Colonel Orestes A. Crandall [notice nécrologique du]. 



Vol. XV, n"6, October 1901. 



Contents : H. A. PILSBRY. Land Mollusks of the Nor- 

 theastern groiip of llie l.oo Choo Islands. rQanesella tane- 

 gashimae, G. Adelinae, Diplommatina yakushimae nn. 

 spp. ; Eunea Iwakawa , var. nov. yakushimae]. — 

 BRYANT WALKER. A new species of Strophitus [S. 

 Wrightianus, n. sp., fig.]. — D^ V. STERKI. New Pisi- 

 dia [Pisidium affine, P. Sargenti, nn. spp.]. — 0. A. 

 CRANDALL. The american PhysaB. — General notes : 

 T. D. A. COCKERELL. Lucapina crenulata. T. D. A. 

 COCKERELL. Navanax inermis. E. M. GAYLORD. Epi- 

 phragmopliora Kelletii. 



Vol. XV, no 7, November 1901. 



Contents : C. T. SIMPSON and J. B. HENDERSON. 

 A new land operculate from Haiti [CERATODISCUS (nov. 

 Gen.) soliitus n. sp., fig.]. - T. H. ALDRICH. A texan oil 

 well Fossil. — W. A. MARSH. Description of a uew Unio 

 from Missouri [Pleurobema missouriensis u. sp.]. — 

 L. S. FRIERSON. A new Unio from Texas [Quadrula lana- 

 nensis n. sp., fig.]. — C. T. SIMPSON. On the classifica- 

 tion of the Union idae. — Mrs. M. BURTON WILLL\MSON. 

 How Potamides (Cerithidea) californica Hald. travels. — 



