FRESHWATER AND LAND SHELLS. 21 



Continuation of Mr Lea's Paper. Reail^ September ISth, 1835. 



GENUS MEGASPIRA. 



Testa clavata; apertura subovata, infernh rolundata; marginibus rejlexis, superni dis- 

 junclis ; columella pluriplicata, basi integra, non effusa. 



Shell clavate; aperture nearly oval, below rounded; margins reflected, above dis- 

 joined; colmnella many-folded, below entire, not effuse. 



Bemarks. — The genus Megaspira* is proposed for a single species. 

 It is a most curious and interesting shell, and although it is closely analo- 

 gous to the genera Bulimus, Pupa and Auricula in some of its cha- 

 racters, cannot be with propriety placed in either of them. Unfortu- 

 nately we know nothing of the animal ; but if we may judge from the 

 peculiar form of the shell, it will doubtless be found to differ much 

 from these genera. 



Megaspira Ruschenbergiana. Plate XXIII. fig. 101. 



Testa cylindraceo-turrita, valdh striata, subfusca, maculis longitudinalibus rufo-fuscis or- 

 nata, apice consolidata ; anfractibus tribus et viginti, subplanulatis ; spira ad apicem obtusi- 

 uscula; columella quadrupUcata ; labro refiexo. 



'■ Shell subcylindrical, turrited, thickly striate, brownish, furnished with longitudinal 

 reddish-brown spots, having a solid apex; whorls twenty-three, rather flattened ; spire 

 obtuse at the apex ; columella with four folds ; outer lip reflected, 



Hab. Brazil ? W. S. W. Ruschenberger, M.D. 



My Cabinet. 

 Diam. -5, Length 2-5 inches. 



* y.iya.i, magnus, and o-Tfuga., spira. 

 VI. — F 



