— 296 — 



gical Survey of Monmouthshire, with some Notes on Breck- 

 nockshire. — J. E. Cooper. A. Loydell (Obituary). — \A'. J. 

 Farrer. Vertigopusilla ^lùW. and V. a/pesfm Aderat Keswick. 



The 1^'autiluK, a monthly devoted to the interests of Con- 

 cbologists. Editors: H. A. Pilsbry and G. W. Johnson. 



Vol. XXIV, n° 1, May 1910. 



Contents : Catharine J. Bush. On the Variation of Aplustrum 

 amplustre L. — VVm. H. Dall. A New Floridian Amnicola [A. 

 Harperi n. «p.]. — V. Sterki. A New Species ol MuscuHum [if. 

 pusillum n. sp., Michiganj. — J. K. Strecker, Jr. Aqrioli7nax 

 agrentis L at Waco, Texas. — .T. K. Strecker, Jr. Notes on 

 Land Shells frora Matagorda Peninsula. Texas. — Bryant 

 Walker. On the Validity of Unio undaltifi Barnes (PI. III). 

 — H. W. WixKLEY. Boston Malacological Club. — Notes : 

 Bryant Walker, A new species for the United States fauna ; — 

 C. W. Johnson, A large fossil Trivia. 



Vol. XXIV, n» 2. Junel910. 



Contents: Rev. H. E. Wheeler. A New Clairbornian Shell 

 [Ovulactœon Aldrichi n. sp., Alabama]. — H. A. Pilsbry. Note 

 on the.Genus Piérides. — H. von Ihering. Descriptions of Two 

 New Species of PotamolUhux [P. paysandtianvs, P. Filipponei 

 nn. >«pp., Uruguay]. — Dr. V. Sterki. Common or Vernacular 

 Naraes for Muscles. — Bryant Walker. On the Validity of 

 Unio imdatus Barnes (Concluded). — Notes : G. Dallas Hanna, 

 Three Shells not hilherto reported from the District of Colum- 

 bia ; — A. L. Hettrich, Albino Oliva angulata. 



Vol. XXIV, n° 3, July 1910. 



Contents : Fred Baker. Shell Collecting in Puset Sound and 

 Alaska. — H. A. Pilsbry. On Opeas GoodaUi Miller. — Wm. 

 H. Dall. New Shells from tlie Guif of California [Hindsia peri- 

 deris, rymatium adairenae. Snlariella triplostephanus un. 

 spp.] — Wm. h. Dall. Two New Mexican Land Shells [Eucalo- 

 dium (Anisospira) Orcutti, Epiphragmophora ( Trichodiscina) ver- 

 densis nn, spp.l 



