— 278 — 



variety (var. longispira n. var.) of Oliva ispidula. — 

 H. A. PiLSBRY. On Chloritis heteromphalus Pils. — A. Retnell. 

 On Burtoa nilotica Pfr. and its relationship to Achatina, etc. 

 (pi. XVII). 



Tlie IVautiluis, a monthly devoted to the interests of Con- 

 chologists. Editors: H. A. Pilsbry and C. W. Johnson. 



Vol. XX, n° 6, october 1906. 



Contents : F. W. Kelsey. A Healthy Colony of Epiphragmo- 

 phora tudiatlata. — Fr. N. Balch. Remarks on Certain New 

 England Cbitons with Description of a new variety [Tonicella 

 ruber Lowe var. index n. var.]. — L. S. Fiierson. Some 

 Observations on the Ova of Unionidœ. — V. Sterki. Sphœrium 

 Hendersoni n. sp. [Colorado]. 



Vol. XX, n' 7, november 1906. 



Contents : C. W. Johnson. On the Distribution of Hélix hor- 

 tensis MûU. in North America. — Bryant Walker. A List of 

 Shells from Nebraska. — Notes : F. R. Latchford, Lij)nn;ea 

 megasoma ; — Migration of Scallops. 



Vol. XX, n° 8, december 1906. 



Contents : Mrs. M. Burton Wilhamson. Abalones and the 

 Pénal Code of California. — V. Sterki. New Pi»idia [P. neglec- 

 tiim n. s|». et var. coipulentum n. var., North America]. — 

 S. C. Wheat. The Brooklyn Conchological Club. — Maxwell 

 Smith. Shells of Richfield Spriogs. New-York and Vicinity. — 

 L, P. Gratacap. a Note upon the Insufficiency of tiie Oper- 

 culum as a Basis of Classification in Round-mouthed Shells. — 

 T. D. A. CocKERELL. H 6 lix hoHensi S iiï Newfoundiand. — Notes : 

 Oysters Carried by Seaweed ; — E. G. Vanatta, Biitish 

 Columbia Shells ; — C. W. Johnsox, Additional Localities for 

 Hélix hortenM-i. 



