180 Linnean Society. [Dec. 19, 



others, which, on the same account, Mr. B. Clarke had sunk in his 



memoir. 



Read " Observations on Cy tinea; and on the genus Thottea of 

 Rottboll," in continuation of Mr. Griffith's memoirs on Root-Para- 

 sites, &c. 



December 19. 



E. Forster, Esq., V.P., in the Chair. 



William Ferrand Merson, M.D., William Tucker AUaway, M.D., 

 John Hillier, Esq., and Sylvanus Hanley, Esq., were elected Fellows ; 

 and Mr. Henry Denny an Associate. 



Mr. J. T. Lay, Her Majesty's Consul at Canton, presented a box 

 of specimens of the Keih-seen-me, a species of Alga related to Nostoc, 

 and eaten as a delicacy among the Chinese. 



The Secretary exhibited on the part of Mr. Newport, President of 

 the Entomological Society, a specimen in spirits of a Neuropterous 

 insect, Pteronarcys regalis, furnished with external branchiae in its 

 perfect state. 



Read a paper " On Carex saxatilis, L., and an allied species." By 

 Francis Boott, M.D.. F.L.S. &c. 



The allied species referred to was found in 1832 in Glen Phee, 

 Clova, by the party accompanying Dr. Graham on his annual bota- 

 nical excursion to the Highlands, and was considered as a form of 

 C. saxatilis, L. ; but Dr. Boott, whose attention has lately been called 

 to the subject by a letter from Mr. W. Wilson of Warrington, point- 

 ing out certain diff'erences between the two plants, is led to regard it 

 as a distinct species, which he names and characterizes as follows : — 



Carex Qrahami, spicis 4 — 5 cylindricis ferrugineis ; masculis 2 (rarius 1) 

 gracilibus acutis : foemineis 2 — 3 subrernotis crassis obtusis inferioribus 

 pedunculatis evaginatis subnutantibus, stigmatibiis 2, perigyniis ob- 

 longo-ovatis rostratis bifurcatis inflatis nervosis suberectis ferrugineis 

 (rarius stramincis) basi pallidis squama ovata acuta fusca apice albida 

 r.L'vvo pallido duplo longioribus. 



