MES^VLIA.— Plate 1. 



access to the Lamarckiau types, when engaged on his 

 important edition of tiiat work ; either whilst the collection 

 was in the possession of the Due de Eivoli, under the 

 curatorsliip of M. Kicner, or subsequently in that of Baron 

 Delcssert under the care of M. Chenu. That such was the 

 case M. Deshayes has related to me more than once with 

 much concern. 



Species 3. (Mus. Cuming.) 



Mesalia Melanioides. 3fes. testa acuminato-turntd, 

 bad rotundata, anfmdibm decern, superm leviter con- 



cavis, oblique longiludinaliter pUcato-costellatis, strik 

 spiralibus numerosk Urkque subdktantibus decmsalk, 

 suturk impressk; alba, punctk rark rufo-fnsck ornaid. 



The Melania-like Mesalia. Shell acuminately tur- 

 reted, rounded at the base, whorls ten in number, 

 slightly concave at the upper part, obliquely longitu- 

 dinally plicately ribbed, decussated with numerous 

 spii'al striae and distant ridges, sutures impressed ; 

 white, oi-namented with one or two red-brown dots. 



Hab. ? 



The generic peculiarities of Mesalia are well-illustrated 

 in this species. 



