vi CONTENTS. 



X. Description of the Mora Tree. % Mr. Robert H. Schomburgk. Com- 



municatcd hi/ Gkorge Bentham, Esq., F.L.S page 207 



XI. On the Structure o/' discuta eiiropœa. Bi/ Charles C. Babington, £*</., 



M.A., F.L.S. , F.G.S., Ssc -'13 



XII. Note un the Ideutittj of three deserihed Species of Acacia. Bi/ Charles 



LvsH, 31. 1)., F.L.S 217 



XIII. On the Number and Structure of the iMannmilœ emploijed by Spiders in 

 the Process of Spinning. 5// John Blackwall, £■.«/., F.L..S'. . .219 



XIV. Obscirufious <ni .some Genera if Plants connected with the Flora of 

 Guiana. Bj/ George Bentham, Esq., F.L.S 225 



XV. On the Existence of Stomata in Mosses. In a Letter to Richard Horsman 



Solly, Esq., F.R.S. 8^ L.S. Bp William Valentine, Esq., F.L.S. 239 



XVI. A New Systetnatic Arrangement of Vertehrated Animals. By C. L. 

 BoNWAKTE, Prince (f 3Iusignano, F.M.L.S., 8çc 247 



XVII. Description of a new Genus of Plants belonging to the Natural Family 

 Bignoniaceje. By David Don, Esq., Libr. L.S., Prof. Bot. King's Coll. 

 Lond 305 



XVIII. Descriptions of the Indian Species of Iris. By David Don, Esq., 

 Libr. L.S., Prof. Bot. Kings Coll. Lond 309 



XIX. A)i Account of the Indian Species of Juncus and Liiziila. By David 

 T>oii, Esq., Libr. L.S. , Prof. Bot. King s Colt. Lond 317 



XX. Description of the Lepidosiren annectens. By Richard Owen, Esq., 



F.R.S. , F.L.S., F.G.S., Hunteriun Professm- in the Royal College of 

 Surgeons, London 327 



XXI. Obserrations on the Spongilla fliiviatilis. /// a Letter to the Secretary. 

 By John Hogg, Esq., M.A., F.R.S., L.S. ^ C.P.S 363 



XXII. Further Obserrations on the Spongilla flnviatiiis; with some Remarks 

 on the Nature of the Spongise Mariuee. In a Letter to the Secretary. 

 By John Hogg, Esq., M.A., F.R.S., L.S. 8s C.P.S 368 



XXIII. Illustrations of the Relationships existing amongst Natural Objects, 



