LIST 
OF. 
CONTRIBUTORS, 
With References to the several Articles contributed by each. 
Apams, ARTHUR, Esq., R.N., F.L.S. &c. page 
Catalogue of the Species of Emarginula, a Genus of 
Gasteropodous Mollusca, belonging to the Family Fissurel- 
lid, in the Collection of H. Cuming, Esq. . . - .- = Oo 
Catalogue of the Species of Nassa, a Genus of Gist pe- 
dous Mollusca, belonging to the Family Buccinide, in the 
Collection of H. Cuming, Esq.; with the Description of 
some New Species . . . Bora . 94 
Descriptions of Fifty-two New ‘Spikes of the Genk ‘Mitra, 
from the Cumingian Collection . . . . . - 132 
Contributions towards a Monograph of the eaaliaes a 
Family of Gasteropodous Mollusca. . . - 150 
A Monograph of Scutus, a Genus of Gasteropodays Mol- 
lusca, belonging to the Family Fissurellide . . . . . . 221 
A Monograph of the Genus Monoptygma of Lea . . . 222 
Descriptions of New Shells from the Cumingian Collection 224 
Note on the Genus Nematura. . . . - 225 
A Monograph of the Recent Species of Ricwula; a Gok 
of Mollusca, belonging to the Family Fissurellide. . . . 226 
A Monograph of Puncturella, a Genus of Gasteropodous 
Mollusca, belonging to the Family Fissurellide. . . . . 227 
Descriptions of Sixteen New Species of Rissoina, a Genus 
of Marine Gasteropodous Mollusks, from the Cumingian 
Collection: . 2-0: gaes«: sles” yo. ne, ae aA aah, mane BGS 
Descriptions of several New Species of pres Rissoina, 
Planazis, and. Eulima, from the Cumingian Collection . . 267 
