68 Mr. Gray's Additions to a 



" C. arenosa. — Erreur de M. Gray. Cette figure ne represente qu'un 

 " tres grand exemplaire fort use sur le dos du C. caput serpentis.'" 

 This species must be unknown in France, as it has no character in 

 common with the species to which M. Duclos has referred it; which 

 must also be the case with the next species, C. sulcidentata. 



" C. pyriformis. — Nouv. esp. qui nous parait n'etre qu'une variete du 

 " C.rufa:' 



" C. tahescens. — Esp, du Mus. Gray, figuree dans plusieurs auteurs et 

 " qui nous est inconnu." 



" C. picta. — Erreui" de M. Gray, var. du C. zonata." 

 " C. Listeri. — Esp^ce figuree dans plusieurs auteurs, impossible a 

 " reconnoitre, n'etant qu'un jeuneindividu." 



" C. alhuginosa. Erreur de M. Gray, var. du C. poraria.^' 



" C. guttata. Var. a grosses taches du C. Vitellus.^'' 



" C. Margarita. Var. blanche du C. Globulus.'^ 



It is most charitable to believe from these remarks, that the above new 

 species are totally unknown to M. Duclos ; for, if he had ever seen them, 

 he never could have made such observations. To give him the opportu- 

 nity of verifying his remarks before the publication of his promised Mono- 

 graph, I have sent to the French Museum specimens of most of the above 

 species. It is only necessary to consult Mr. Broderip's beautiful figure of 

 C. guttata to be convinced that it has no affinity to C. Vitellus. 



Additions and Corrections. 



1. C. Princeps. The name must be changed, as it is C. Valentia of 

 Perry's Conchology,* t. 23, f. 2, where the individual specimen here 

 described is well figured. 



2. C. Mappa, add. 



C. Alga. Perry's Conch, t. 23, f. 1 ; Wood's Cat. t. 16, /. 2. 



* I have ventured to refer to this work, as I consider that it is just that every 

 author should be quoted ; and this author has anticipated Lamarck, Swainson, 

 and Sowerby, in several species. 



