289 



The Nautilus, a monihly devoted lo l!ie intcre.sts of 



Conchologisls. Edilors : il. A. Pilsbiy and C. W. Joliiison. 



Vol. XXX, 11° y, January 1917. 



Contents : Charles Hedley. Notes on Operculuni Evolution. 

 — Jas. .H. Ferriss. a Shell Hunt in the Black Range, with 

 Description of a New Oreohelix [0. Pil'^bryi n. sp.]. — W. J. 

 Crozier. The Nature of the Conical Bodies on the Mantle of 

 Certain Nudibranclis. — A. E. Ortmann. The Analoniy of 

 Contrad"ns camboiensis Sow. (Nayades). 



Vol. XXX, n" 10, February 11)17. 



Contents : H. A. Pilsrry. Rafînesque's Gênera of Fresh- 

 water Snails. — TJarling Iv. Greger. A Color-marked Euco- 

 nospira from the Pennsylvanian of Missouri and a list of réfé- 

 rences lo coloration in Fossil Shells (PI. BI). — H. A. Pilsbry. 

 A New Ilemphillia and other Snails from near Ml. Hood, 

 (Jregon [H. Malonei n. sp.]. — H. A. Pilsbry. Philomycus in 

 Arizona [Ph. {Pallilera) arizonensis n. sp.]. — T. D. A. Cocke- 

 RELL. Henry Melvill Gwalkin [Obituary]. — Notes : II. W. 

 WiNKLEY, Common Names ; — T. D. A. Cockerell, Limax 

 arborum in a Colorado Greenhouse. 



\ol. XXX, n° 11, Mardi 1917. 



Contents : H. \on Ihering. Loboa [n. gen.] Brunoi n. sp., 

 a Land Shell froni the Brazilian Island of Trinily (fîg.). — 

 Calvin Goodrich. PIcurocera aubiilare Lea. — H. A. Pilshry. 

 A new Ilolospira from Chihuahua [//. Dryankrallieri n. sp.] 

 (fîg.). — H. A. Pilsbry. Notes on the bi'asciala Group uf Oxy- 

 chona (fig.). — Shields Warren. A List of Mollusks collected 

 at Castle Island, Boston. — C. W. Johnson. Martyn's Uni- 

 versal Conchology. — Notes : J. H. Blake, Astarle quadrans 

 as Food for Flounders. 



