Miscellaneous. 79 



tion of the Herbarium of Jean Jacques Rousseau, together with 

 some plants from Mahon, Minorca, presented by the Secretary. 

 Another collection of foreign plants from America, collected by the 

 officers of the Hudson's Bay Company, has been presented by 

 Joseph Freeman, Esq. Also specimens of Lycopodium Circinnatum, 

 from the President, sent by Dr. Forbes, F.R.S., of Chichester. 

 Specimens of three new British plants have been received, viz. 

 Claytonia Alsinoides, from Mr. W. Baxter of Oxford ; also a moss 

 new to Britain, Cinclidium Stygium, from Mr. Leyland of Halifax ; 

 and specimens, of which there are many duplicates, of Spartina 

 Alternifolia, from Itchin Ferry, Southampton, presented by Dr. 

 Macreight, V. P. The Society have also received from Mr. R. H. 

 Schomburgh, now travelling in British Guiana, papers accompa- 

 nied with drawings on the two following interesting plants, which 

 were read before the Society, viz. Victoria Regina and Loranthus 

 Smythii. Also donations of seeds from the Cape of Good Hope, 

 presented by M. Schmidt. 



" On the first Friday in March the Curator, Daniel Cooper, Esq., 

 will commence a course of Lectures on the Practical Part of Botany, 

 which will be continued every night of meeting one hour previous to 

 the chair being taken." 



MISCELLANEOUS. 



DESCRIPTION OF A NEW TRILOBITE. 



Calymene Rowii, Green. — The outline of this fossil as it lies 

 upon the rock presents a very regular oval figure. The buckler and 

 the body are a good deal elevated, and measure longitudinally nearly 

 an inch and two thirds. 



The buckler is lunate, and is edged round its whole border with a 

 little groove or channel. Its front or middle lobe is elevated above 

 the cheeks, is rounded at its anterior part, and gradually enlarges as 

 it approaches the middle lobe of the abdomen. There are no tuber- 

 cles or folds upon it, but its posterior angles are so truncated as to 

 form a subtriangular protuberance on each side of the commencement 

 of the vertebral column. The cheeks are shaped like spherical tri- 

 angles, and seem from our specimen to have projected on each side 

 to the fourth articulation of the abdomen. The oculiferous tubercles 

 are large and lunate ; they are placed close to the front, and seem 

 almost to form a part of it ; they are situated just before the protu- 

 berances above mentioned. 



The abdomen and tail can readily be distinguished. There are 

 twenty- three articulations in both. The middle lobe is very promi- 



