Occurrence of Ilaiiinannia septemspiralis Razoumovsky and 

 //. palula Drap, in England. — W. E. Alkins. Zonitoides niti- 

 das var. viridescens Cockerell in Nortli Stal'fordshire. — 

 W. E. Alkins. A scalariform Planorbis carinatvs Miiller. — 

 A. E. Boycott. The Genitalia of Azea tridens and Cochlicopa 

 lubrica (Figs.). — A. E. Boycott. Parthenogencsis in Palu- 

 dcslTina JenUinsi. — J. A. Hargreaves. Sinistral Limnœa 

 pcrrfjer Mail, and lis progeny. — W. Harrison Hutton. Notes 

 on IJmnœa pcreger m. sinisirorsum. — S. Spencer Pearce. 

 On a Colony of Cochlicopa lubrica MiUler. — Chas. Oldham. 

 Vertigo alpeslris in Borl■o^^■dnle, Cuniberland. — Geo C. 

 Spence. Note on the reproduction of Obeliscus obeliscus Mori- 

 cand. — J. \\'iLFRiD Jackson. Rare Shells in shell-pockets on 

 tlie W'irral Sand dunes. — Alan Gardiner. itijgromia revelala 

 Férussac in Nortti r3e\on. 



The Nautilus, a qiiarlerly devoted lo the interests of 

 Conchologisis. lutiturs : U. A. Pilsbry and (.. W. .htlinson. 



A'ol. XXXIII, n« 1, July 1919. 



Contents : C. W. Johnson. .'\n old collecting Ground revi- 

 sited (Figs.).— Geo. H. Clapp. New Land Shells from Alabama 

 and Tennessee [Polita cumbcriandiana, Vitrea (Paravitrea) 

 Pilsbry ana, nn. spp.] (Figs.). — Wu. H. Dall. A new Form of 

 AmpuUaria [A. i^FcUpponea) ncritini(ormis n. sp., Rio Uru- 

 guay]. — Fr. c. Baker. A new Species of Plnjsa from New 

 York State [Ph. oneida n. sp.]. — A. A. IIinkley. Mollusca 

 found in the \icinity ot Dubois, Illinois. — H. G. Vanatta. 

 Land Shells of Southern Florida. — H. A. Pilsbry and Jas. H. 

 Ferriss. New Land Snails collecled by the Ferriss and Hinkley 

 Expédition of 1919 [Sonorella monlana, S. Hirikleyi, S. cayeta- 

 nensis^ S. tumacacori, S. palugotùca, S. inustang, S. monle- 

 zuca, S. EUzabcllue, S. colis, S. insignis nn. spp., Bulimulus 

 nigromonlanus n. subsp., Arizona]. — George Willett. Mol- 

 lusca of Forrester Island, Alaska (continued). — Wm. F. 

 Clapp. A new Cuauvtia from the Philippine Islands [C. Forbesi 

 n. sp.] (PI. I). — Notes : P. Bartsch, Milra aiaanda : a cor- 

 rection \M. signa n. noni.J; — E. G. WwAnA, ()p, as pnintlunt 



