IV 



page 

 Carpenter, Philip P. 



First Steps towards a Monograph of the Ccecidcc, a Family 

 of the Rostriferous Gasteropoda 413 



DoHRN, H. 



Descriptions of New Species of Land and Freshwater 

 Shells collected in Ceylon, from the Collection of H. Cuming, 

 Esq 133 



Description of New Species of the genus Puludomus, from 

 Ceylon, in the Collection of H. Cuming, Esq 535 



Eyton, Thomas Campbell, F.L.S., F.Z.S., &c. 



Note on the Skeleton of the Sheath-bill (Chionis alba) . . 99 



Flower, William H., F.Z.S., etc. 



Exhibition of Exocetus volitans, to which was attached a 

 specimen of Penellus blainvillii, Milne-Edwards (Leoneo- 

 penna blainvillii of Lesueur) 3/2 



Gould, John, F.R.S., V.P.Z.S., &c. 



Exhibition of British specimens of the Motacilla Jlava, Ray, 

 and note from Mr. Thirtle of Lowestoft, as to its occurrence 

 in that part of England 77 



Remarks on three specimens of Steller's Duck exhibited 

 by Mr. Stevens 78 



Remarks on a series of Birds collected by Mr. A, R. Wal- 

 lace in the Aru Islands 95 



On a New Species of Toucan (Andigena spilorhynchus). . 149 



Exhibition of specimens of the American Regulus ca/en- 

 dulus, and the Night Heron 290 



Extract from a Letter addressed to him by his son Mr. 

 Charles Gould 290 



On a New Species of Ptarmigan 354 



Descriptions of Two New Species of the family Hirundi- 

 nidce 355 



Exhibition of a Drawing of Mofossus anstralis of Gray . . 372 



