COUNCIL FOR 1851. 9 



cases with Mr. Bean, Mr. Alder, Mr. Hanley, and other well 

 known authorities in this branch of Natural History, and the 

 Council trust that the correctness of identification may be 

 relied upon throughout. The Council invite attention to an 

 ingenious method (invented by the Keeper of the Museum) for 

 the purpose of insuring the security of the smaller and more 

 delicate species, which in the course of time sufier by exposure 

 when mounted in the ordinary way. 



The completion (so far at least as the Marine species are 

 concerned) of the History of British Mollusca by Professor 

 E. Forbes, and Mr. Hanley, has enabled the Keeper of the 

 Museum to draw up and print a list of all the species recognized 

 as such by the authors of this work. The circulation of copies 

 of this list, with our desiderata marked, will, it is hoped, 

 greatly facilitate our obtaining the species yet wanted to com- 

 plete the British Collection. 



In the class Radiata, there have been added in the British 

 series some choice specimens of Goniaster equestris, from 

 Lamlash Bay, Arran, and a carefully prepared specimen of 

 Comatula, from the same locality ; a valuable acquisition, as 

 connecting the Starfishes with the family of Crinoidea. 



Another series of Uniones and Helices has been forwarded 

 by our indefatigable correspondent, Mr. Joseph Clarke, of 

 Cincinnati. 



To Mr. O, A. Moore, the Society is indebted for a very 

 interesting series of Land Shells, from Chili, principally of the 

 genus Bulimus, and containing several forms new to the 

 Collection. 



The additions to the Foreign Collection have not been 

 numerous, but are valuable. A skin of the Sable Antelope 

 (Aigoceros niger), one of the rarest known species of African 

 Ruminants, has been presented to the Society by Mr. Armitage, 

 of Harrogate. 



The Mineralogical cabinet has received, during the year, 

 some fine specimens of Rutile, the gift of J. B. Lawes, Esq. 

 The Minerals have been revised and the arrangement of them, 

 in some respects, improved; and the Council hope by an 

 enlarged method of labelling, for which the cases now afibrd 



