LIST 



OF 



CONTRIBUTORS, 



With References to the several Articles contributed by each. 



Adams, Arthtjr, R.N., F.L.S., &c. page 



Description of Two New Shells discovered by Robert 

 MacAndrew, Esq., on the Coast of Norway 1 



Descriptious of Thirty-four New Species of Bivalve Mol- 

 lusca {Leda, Nucula and Pythina) from the Cumingian Col- 

 lection 47 



Notice of a New Species of Trichotropis, from the CoUec- 

 tion of Hugh Cuming, Esq 369 



Bartlett, a. d. 



Letter addressed to Dr. Gray respecting the Living African 

 Lepidosiren in the Crystal Palace 346 



Caupenter, p. p. 



Notės on the Species of Hipponyx inhabiting the American 

 Coasts, with descriptions of New Species 3 



Description of New Species of Shells coUected by Mr. T. 

 Bridges in the Bay of Panama and its vicinity, in the Col- 

 lection of Hugh Cuming, Esq 159 



Description of New Species and Varieties of Calyptrceidce, 

 Trochidce and PyramideUidtB, principally in the CoUection 

 of Hugh Cuming, Esq 1C6 



Descriptions of Shells from the Gulf of Cahfornia and the 

 Pacific Coasts of Mexico and California 158 



