22 



Gastuoch;ENA rugulosa. Ga^t. lesld oblongd, ulbidd, slriatd, ru- 

 gulosd, striis anlicis prope marginėm hiantevi coiifertis, acutis ; 

 hiatu longissitno : long. 8, lat. 0"3, all. (VA poli. 



Hab. ad Insulas Gallapagos et apud Insulain Lord Hood's dictani. 



Found vvith the lašt.— G. B. S. 



Gastroch^na uyalina. Gust. testd ovali, albidd, hyalind, lavi, 

 dorso longitudinaliter striato ; laiere antico brevi ; hiatu duos 

 trienies testce aguante : long. 0'55, lat. 0"25, alt. OS poli. 



Hab. ad Insulatn Lord Hood's dictam. 



Found with tlie tvvo lašt. — G. B. S. 



A Note was read from Mr. Gray, giving an account of the arrival 

 in England of two living specimens of Cerithium armatum, vvhich had 

 been obtained at the Mauritius, and had been brought from thence ia 

 a dry statė. That the inhabitants of land Shells will remain alive 

 without moisture for many months is well known : he had b.ad occa- 

 sion to observe that various marine Mollusca \vill also retain life in a 

 State of torpidity for a considerable time, some facts in illustration of 

 which he had communirated at a recent Meeting of the Society (Pro-' 

 ceedings, Part L, p. 116.): the present instance included, hovvever, 

 a torpidity of so long a continuance as to induce him to mention it 

 particularly. The animal, though deeply contracted vvithin the shell, 

 was apparently healthy, and beautifuUy coloured. It emitted a con- 

 siderable ąuantity of bright green fluid, vvhich stained paper of a grass 

 green colour : it also coloured tvvo or three ounces of pure vvater. 

 This green solution, after standing for tvvelve hours in a stoppered 

 bottle, became purplish at the upper part j but the paper retained it,s 

 green colour though exposed to the atmosphere. 



The Secretary mentioned an instance of the arrival in this country 

 of a living Cerithium Telescopium, Brug., brought from Calcutta, in 

 compaiiy vvith some small Paludincc, vvhich also reached England 

 alive : these Mollusca vvere, hovvever, kept in sea vvater frequently 

 changed. The Cerithium was placed by Mr. G. B. Sovverby, for dlssec- 

 tion, in the hands of the Rev. M. J. Berkeley and G. H. Hoffman, 

 Esq., vvho have prepared a paper on its anatomy for the forthcoming 

 No. of the ' Zoological Journal ' : it vvill be illustrated by a series of 

 figures, which vvere exhibited to the Meeting. lt is vvorthy of re- 

 mark, that the spirit in vvhich this animal vvas immersed for the pur- 

 pose of killing it, and in vvhich it vvas kept for some vveeks, became of 

 a dark verdigris colour. 



Dr. Weatherhead exhibited tvvo young Ornithorhynchi preserved 

 in spirit, vvhich he had recently received from Nevv Holland, and 

 stated his intention of presenting one of them to the Society 's Mu- 

 seum. The smaliest of them is about tvvo inches in length ; the 

 largest about four. Both are destitutc of hair; and in both the 

 eye-lids are closed. In the smaller one tlicre is a vcstige of an 

 umbilical slit. 



