C () N T E N T S. 



XX. Notes on the Vegetation of Buenos Ayres and the neighbouring districts. By 



Charles James Fox Bunbury, Esq., F.B.S., F.L.S. 8fc page 185 



XXI. On the Genus Aquilaria. By the late William Roxburgh, M.D., F.L.S. fyc. ; 

 toith Remarks by the late Henry Thomas Colebrooke, Esq., F.B.S., F.L.S. 8fc. 

 Communicated by Robert Brown, Esq., D.C.L., F.B.S., President of the Linnean 

 Society 199 



XXTI. OaAcradenia, a new Genus of Diosmeee. By Richard Kippist, Esq., Libr.L.S. 207 



XXIII. On the Genus Myrmica, and other indigenous Ants. By John Curtis, Esq., 

 F.L.S. 8fc 211 



XXIV. Note on the Elaters o/Trichia. By AjituvrILe^uey, Esq., F.R.S., F.L.S. ^c. 221 



XXV. Note on the Genus Ancistrocladus of Wallich. By G. H. K. Thwaites, Esq., 

 F.L.S. Sfc, Superintendent of the Botanic Garden of Peradenia, Ceylon. . 225 



XXVI. Remarks relative to the affinities and analogies of natural objects, more parti- 

 cularly of Hypocephalus, a Genus of Coleoptera. By John Curtis, Esq., F.L.S. 

 Sfctyc 227 



[XVII. On the Osteological relations observable among a few Species of the Bovine 

 Family. By Walter Adam, ILL). Communicated by Robert Brown, Esq., 

 V.P.L.S 237 



