186 LAND AND FRESH- WATER SHELLS OF N, A. [PART J. 



Helix lohrii, was found by Mr. Gabb on the table-lands near 

 Malejo, Lower California. Specimens received from him agree 

 with the type of H. rowelli lent me for figuring by Dr. Newcomb 

 (Fig. 326). 



The shell is much like a gigantic H. pulchella. 



Doubtful, Spurious, Extralimital Species of Helix. 



Helix (Sheppard, Trans. Lit. and Hist. Soc. Qi^ebec. 1, 194).— Shell 



thin, conoidal, perforated ; spire very flat ; margin of lip reflected. 

 Common in the same place as the abov^ (//. horlensis, Plains of 

 Abraham, Quebec) ; it is a much less shell, with a brown epidermis ; 

 the penultimate whirl has an elevated white ridge near the aper- 

 ture, which appears to be some remains of the last year's lip. 

 (^Sheppard.) [==//. riifesceiif;?'] 



Helix sagraiana, D'Orbigny, a Cuban species, is erroneously attributed 

 to California (on the authority of Sowerby) by Pfeiffer (Mon. I, 

 325) and Carpenter (Report, p. 214). 



Helix sandiegoensis, Lea, is mentioned by name only by Gould, Pac. R. 

 R. Rep. V, 331. 



Helix attenuata, Lake Superior, &c., is given without description by J. de 

 C. Sowerby, in Ricuardson's Fauna Boreali-Americana (III, 315) 

 together with 



Helix gidaris, 



Helix rudis, and 



Helix paludosus (=i7. miniita). 



Helix angidata, Sheppard, is quoted as synonym of Planorbis campanic- 

 latus, by J. de C. Sowerby, in Fauna Boreali-Americana, III, 315. 



Helix pallida, Budgin, Virginia, is quoted as a synonym of an unnamed 

 Helicella by G. B. Sowerby (Tankerville Coll. 37), and 



Helix corrugata, Budgin, is quoted by the same (p. 42) as a synonym of 

 Limncea corrugata, and 



Helix viridata, Budgin, Virginia, is quoted by the same (p. 43) as syno- 

 nym of Paludina viridis, and 



Helix imperfecta, Budgin, is quoted by the same (p. ix of Appendix) as 

 synonym of Melania inermis. 



Helix minuta. True (Proc. Essex Inst. II, pt. 2, p. 193, Salem, Mass. 

 1860). — Shell minute, rounded conical, smooth, apex obtuse ; epider- 

 mis of a uniform reddish horn-color ; whirls four, rounded above and 

 below, with a well-defined suture ; aperture rounded, lip simple and 

 thin, umbilicus broad and deep. Diameter about one-twentieth inch. 



Helix peregrina (Bosc, Hist. Nat. des Coq. IV, 57, 1830). — Ovale, im- 

 perforee; les tours de spire ecartes, decroissants egalement, I'ouver- 

 ture ovale. 



Schwet, Einl. in Conch. II, tab. iv, f. 11. Se trouve dans les ilea 

 ■de la cote ouest de I'Amerique. (Bosc.) 



