I02 Quarterly Journal of ConcJiology. 



Gassies, J. B. — Description de Mollusques terrestres et fluvi- 

 atiles provenant de la Nouvelle-Caledonie (Description of new land 

 and freshwater Mollusca from New Caledonia) pp. 227 — 232. 



Helix avifiiu's, Net itina Montroiizicri, N. guttata, and N. ex- 

 pa?isa. 



Paleontology, pp. 232 — 245. 



Bland T. — Examen critique de certaines especes du contin- 

 ent Americain et des Antilles, decrites dans la Monographie des 

 Helici7ia (Conchologia Iconica) de I-. Reeve, comme appartenant 

 a ce genre (Critical examination of the American species oi Helicina 

 in Reeve's monograph) pp. 245 — 252. See separate article. 



Descriptions of Ten New Species of Shells, 



By G. B. SowERKY, junr. 

 (From the Proceedings of the Zoological Society. ) 



Conus gracilis, (p. 125, PI. XXIV, fig. 6.) An elongated Cone, 

 resembling in form C. amleifotniis, Reeve, &c., but the col- 

 oring differs completely from those species it resembles 

 most in shape, being of a rich brown, with a few irregularly 

 placed whitish patches. 



Specimen unique, in the collection of Dr. Prevost. 



Conus multilineatus, (p. 126, PL XXIV. f 5) A turbinated Cone, 

 bearing most resemblance in marking to C. lignarius. Reeve, 

 it may however be readily distinguished by its turbinated 

 form, and the coronation of the spire. 



Specimen unique, in the collection of Dr. Prevost. 



Trochus ( Polyodonta ) niirabilis, (p. 126, PI. XXIV. f 7) A rather 

 solid Trochus, of a fleshy-white color, with longitudinal red- 

 dish-brown "flames." I'he roughly granular ribs and the 

 deeply excavated suture, are its chief characters. 

 Hab. MoUuccas. 



Ziziphinus multiliratus, (p. 127, PL XXIV. f 10) An abbreviately 

 conical species, of a yellowish-green color with red "flames," 

 closely encircled with spiral granular ridges. 



Var. /3, Spiral ridges almost obsolete. 



Hab. Cape of Good Hope. 



