GouLD, John, Esq. page 



Descriptions of five New Species of Maminals .... 77 

 Descriptions of three New Species of Birds froni Australia . 80 



Oii the genus Anotts, Leach 103 



Descriptions of two new Birds from New South Wales . lO^ 



GuLLivER, George, Esq. 



On the Size of the Red Corpuscles of the Blood in the 

 Vertebrata, with copious Tables of Measurements .... 93 



Hanley, Sylvanus, Esq. 



Descriptions of three Ne\v Species of Shells, belonging to 

 the genus Artemis 11 



Descriptions of six New Species of Donax, in the collec- 

 tion of Hugh Cuming, Esą l^ 



Descriptions of two New Species of Z)owaa: 17 



Descriptions of three New Species of Bivalve Shells, of the 

 genera Cytherea and Venus 21 



Descriptions of New Species of Ostrea, in the coUection 

 of Hugh Cuming, Esq 105 



HoDGSON, Bryan h., Esq. 



On Nepalese Birds 22 



Ingarfield, — , Esq. 



Donation of a Specimen of C7awcer iVbrre^tctM .... 13 



LowE, the Rev. R. T. 



Letter from, accompanying a specimen of Zeus conchifer, 

 Lowe 103 



Ogilby, William, Esq. 



Exbibition of Tyrrhaptes paradoxus and five Mammals 

 from the Altai Mountains of Siberia 75 



Olive, Jeremiah, Esq. 



Donation of Birds' Skins from Australia 75 



OwEN, Professor. 



Observations on the living Echidna exhibited at the Me- 

 nagerie of the Society in May 1845 80 



On the exi8tence of t\vo Species of Wombat (Phascolo- 

 mys) 82 



Pfeiffer, Dr. L. 



Descriptions of Ne\v Species of Helix and a new Glandina, 

 in tlie collection of Hugh Cuming, Esq 88 



Descriptions of New Species of Land-shells, from the col- 

 lection of Hugli Cuming, Esq 43 



Descriptions of twenty-t\vo New Species of Land-shells, 

 in the collection of Hugh Cuming, Esą 63 



Description of a New Species of Amphipeplea .... 68 



Descriptions of t\venty-two New Species of ZTefo ... 71 



