January 27, 1835. 

 Lieut.-Col. Sykes in the Chair. 



Extracts were read from a Letter addressed to the Secretary by 

 J. B. Han^ey, Esq., Corr. Memb. Z.S., and dated Teignmouth, Ja- 

 nuary 22, 1835. It was accompanied by a large collection of SheUs 

 from the south coast of Devonshire, and bj' specimens of Echinoder- 

 mata and Crustacea from the same coast, which the WTiter presented 

 to the Society. It was also accompanied by drawings of a large 

 specimen of Carijophyllia Smithii, now living in Mr. Harvey's pos- 

 session : the drawings represent the animal shortly after feeding, 

 ■when it is expanded sufficiently to contain the food, extending rather 

 above the level of the coral and raised in the middle ; and also as it 

 appears three or four hours after having been fed, when it expands 

 itself to the fullest extent, and ejects, in the form oi flocculi, the crude 

 undigested matter. 



A Note was read from the Secretary of the United Service Mu- 

 seum, accompanying several skins of Birds transmitted for exhibi- 

 bition by direction of the Ornithological Sub- Committee of that 

 Museum. 'I'he sj)ecimens were brouglit under the notice of the 

 Meeting. 



The exhibition was resumed of the Shells collected by Mr. Cuming 

 on the western coast of South America and among the Islands of the 

 South Pacific Ocean. Those brought before the present Meeting 

 were accompanied by characters by Mr. G. B. Sowerby, and com- 

 prised the following species : 



Genus HippoNYx. 



" Of this remarkable genus Mr. Cuming brought home three spe- 

 cies in such perfect condition, as respects the shell, as to possess 

 both valves in situ. The two specimens which exhibit these three 

 species appear to me so interesting that I shall venture upon a par- 

 ticular description of them. The first, of the species which I have 

 named Hipp. Mitrula, is a group of about twenty individuals, of va- 

 rious sizes, from Vtt to 4- an inch in diameter, adhering by their lower 

 or flat valves to an irregular piece of stone ; the attached valves as 

 usual, are conformed to the irregularities of the surface of the stone, 

 and when they have been at first attached to a cavity, they are hol- 

 low : the upper valves are also somewhat modified in form by the 

 same cause, so as to be more or less regular according as the lower 

 valve has adhered to a more or less smooth and even part of the 



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