FRESHWATER AND LAND SHELLS. 89 



Helix Columbiana. Plate XXIII. fig. 75. 



Testa obtuso-convexd, infernh subrotundatd, nitidct, longitudinaliter striald, corned, dia- 

 phand, umbilicald; anfraciibus senis, subrotundaiis ; aperturd subrolundaid; labro albo et re- 

 Jlexo, infernh subcalloso ; columelld Icevi. 



Shell obtusely convex, rounded below, shining, longitudinally striate, horn-coloured, 

 transparent, umbilicate ; whorls six, roundish ; apertme rather round ; outer lip white 

 and reflexed, slightly callous below; columella smooth. 



Hab. Fort Vancouver, Oregon. Professor Nuttall. 



My Cabinet. 



Cabinet of Professor Nuttall. 



Diam. •?, Length -4 of an inch. 



Remarks. — One of the new shells brought by Professor Nuttall from 

 his late expedition. It very closely resembles a small individual of JI. 

 thyroideus (Say), but may be distinguished by its having the stnse, more 

 distant, and in having a more depressed spire. 



Helix magnifica. Plate XXIII. fig. 88. 



Testa obtuso-conicd, subcarinatd, longitudinaliter striatd, fasciis fiammeis, rubris albisque 

 pictd, subtus seriebus pluribus punctorum rufescentium ornatd, lath umbilicatd; anfractibus 

 quinis, supernh planulatis, inferni subconvexis ; aperturd transversd; labro sinuoso, rejiexo ; 

 columelld lavi. 



Shell obtusely conical, subcarinate, longitudinally striate, with white and red flame- 

 shaped bands, beneath furnished with many series of reddish spots, widely umbilicate ; 

 whorls five, above flattened, below rather convex; aperture transverse ; outer lip sinu- 

 ous, reflexed ; columella smooth. 



Hab. New Granada. J. H. Gibbon, M.D. 



My Cabinet. 

 Diam. 2-7, Length 1-2 inches. 



Remarks — This remarkably fine shell was among the collection 



VI. — X 



