XXI. — On the Lingual Dentition of Gceotis. 



BY THOS. BLAND AND W. G. BINNEY. 



Read January 6, 1873. 

 [Reprinted from the Annals of the Lyceum of Natural History, N. Y., Vol. x, Oct., 1872.] 



The genus Gceotis was described by Shuttle \vorth,* founded 

 on a curious mollusk from Porto Rico. The lingual denti- 

 tion was said to be nearly the same as in Vitrina and Zonites, 

 the teeth arranged in oblique rows, centrals obtusely tri- 



*" Lamina lingualis fere ut in Vitrina et Zonites constituta videtur, papillre nempe 

 numerosse in seriehus utrinque oWiquis ordinatse sunt: papilla central! obtuse trl 

 dentata; mediis vix a centrali diversis; lateralibus autem subulato-productis, arcuatis 

 basi? bifurcatis. An maxilla adsit hteret." " E formatione lingure animal videtur 

 sine dubio carnivorum." Shuttleworth, Bern Mit. 1854, p. 34. 

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