12 REPORT OF THE 



lication of these plates, together with the descriptive memoirs to 

 be contributed by the editor, Mr. Charlesworth, must tend to 

 promote that interest which the pen and pencil of Professor 

 Phillips have excited in the extinct fauna of our district, the 

 Council have thought the design well worthy of encourage- 

 ment. 



The Keeper of the Museum has devoted a considerable portion 

 of his time to increasing and perfecting the collection of British 

 Conchology, which has, during the past year, been more than 

 doubled in extent, and the original collection mostly replaced by 

 better specimens. The whole is distinctly labelled, and advan- 

 tageously displayed. 



The additions which this collection has received have involved 

 no expense to the Society, having been obtained almost entirely 

 by Mr. Charlesworth in exchange for specimens of Tertiary 

 fossils from his private collection, which he liberally appropriated 

 to this purpose. The most valuable shell contained in the col- 

 lection (Pleurotoma teres, Forbes) was found by the Secretary 

 on the coast near Redcar, during the last summer, and pre- 

 sented by him to the Museum. Mr. Charlesworth hopes, 

 through his extensive correspondence with the principal culti- 

 vators of British Conchology, ultimately to make this collection 

 one of the most complete extant. 



Through the liberality of Mr. Woodward, Professor of Natural 

 History in the Cirencester Royal Agricultural College, the 

 Foreign Conchological Collection has been enriched by a speci- 

 men of very remarkable interest, namely, an Argonaut-shell 

 exhibiting a very peculiar formation. This Mr. Charlesworth 

 explains on the supposition that the spire of the shell, having 

 been broken off during the life of the animal, has been replaced 

 by a small shell of the same species, which the Argonaut has 

 fixed in a reversed position, and united to the broken edges of 

 its habitation by the secretion of shelly matter. 



In Ornithology, an interesting addition has been made to the 

 General Collection by the purchase of a large series of Birds, 

 sent direct to this city from Malacca; but by far the most 

 important accession which this department of the Museum 



