. 292 - 



Vol. XXIX, n° 6, October 1915. 



Contents : W. A. Dall. Notes on American Species of Mac- 

 trella [M. clisia n. sp., West Mexico]. — A. E. Ortmann. 

 Studies in Najades (continued), — E. G. Vanatta. Notes on 

 Oliva [0. peruviana Lk. var. subcastanea n. var., 0. bulbosa 

 Boit. xnr. iininucnlala n. n. = var. alba Jolms. [non Lk.), 

 O. ispiduld L. var. grutiosa et var. akjida nn. varr., OUvella 

 biplicata lapillus n. var., 0. BInncsi Ford var. albata n. n. = 

 var. nlba Ford (non Marr.)J. — Notes : E. P. Chace, Hélix 

 pisana Miill. in California. 



ycA. XXIX, n° 7, Novenibcr 1915. 



Contoiils : H. A. Pir.SBr.Y. A New Indian Species of Pupil- 

 lidée [Bifidaria (Bensonella) landurensis n. sp., India]. — 

 Bryant Wat.ker. IJnio vhidis Conrad. — W. H. Over. Mol- 

 iusca of Soutli Dalcota. — Notes : L. S. Frierson, On the 

 Genus Harmundiu ; — Bryant Walker, Habits of Eupera ; — 

 E. G. Vanatta, Venezuela Sholls ; — C. W. Johnson, HcHx 

 horten.sis, near Edgartown, ^^artha's Vineyard, Mass. ; — 

 T. D. A. COCKERELL, Slugs in California ; — T. D. A. Cocke- 

 RELL, Tethys {Ncaplysia) caiifornica Cooper ; — T. D. A. 

 Cockerklt., The Solenopsidse [= Solcnomorphidœ n. nom.]. 



Vol. XXIX, n" 8, necember 1915. 



Contents : Bayard Long. An occurrence of Paludestrina 

 salsa in Nev Jersey. — Frank C. Baker. Pleistocene Mollusks 

 from Illinois. — Darling K. Greger. The Gastropoda of Payne 

 County, Oklahoma. — W. H. Over. Mollusca of South Dakota 

 (concluded). — E. G. Vanatta. Pupoides inornatus n. sp. 

 [S. Dakota]. — Notes : F. R. Latchford, Litlorina littorca 

 a Fish. 



