Pho hoe CE. 
THE specimens of SHetts in the following List marked 
B.M. were received from Professor Alcide d’Orbigny, as the 
type specimens, collected, described and figured by him in 
the Mollusca Part of the “ Voyage dans Amérique Méri- 
dionale, le Brésil, la république orientale de l Uruguay, la 
république Argentine, la Patagonie, la république du Chih, 
la république de Bolivia, la république de Pérou, exécuté 
pendant les années 1826 4 1833, par Alcide d’Orbigny. 
Ouvrage dédié au Roi, et publié sous les auspices de M. le 
Ministre de I’ Instruction publique.” Paris, 4to. 1847. 
The specimens are fastened on their original Pasteboard 
Trays, named by M. d’Orbigny, and marked with their 
special habitats ; and generally there is a series of different 
ages of each species, especially of those from the South 
American rivers and ponds. 
JOHN EDWARD GRAY. 
1 Oct. 1854. 
