CONTENTS. 
PART 1.—1871. 
I. Les Mélastomacées. Par J. TRIANA, M.D. Ouvrage qui a regu de la Société de 
Physique et d' Histoire Naturelle de Genève le prix quinquennal, fondé par AUGUSTE 
PYRAMUS DE CANDOLLE pour la meilleure Monographie d'un Genre ou d'une Famille 
ee E M. tu o Eyes ou ced b rre to D 
PART II.—1872. 
II. Memoir on the Spermogones and. Pycnides of Crustaceous Lichens. T W. LAUDER 
LOUE, MD, FRS, FE o .—-—. . 189 
III. On the Hippocrateaceæ of South America. By Joux Miers, F.R.S. if L.S., Dignit. 
$ Commend. Ord. Imp. Bras. Rose, &c. e.. . . i. MOM 
PART III.—1873. 
IV. On British Spiders. By the Rev. O. P. CAMBRIDGE. Supplement to a communica- 
tion “on British Spiders new. to science,” $c., read El the Linnean Society, 
January 20th, 1870. . . . . : Vea co ME 
V. On the Anatomy of the American E oue "rien Latr. ! By Prof. 
EEN EBS FELS, de . . i22 ED 
PART IV.—1873. 
VI. On the Development of the Flowers of Welwitschia mirabilis, Hook. fil. .By Wir- 
LIAM Ramsay McNas, M.D. Edin., Professor of Botany, Royal College of Science 
for Ireland. Communicated by J. D. Hooker, M.D., V.P.L.S., c. . . . 507 
VII. On Begoniella, « New Genus of Begoniaceæ dad New Granada. By Professor 
CITE, MA, LESS O ir Ries Dia 
VIII. Descriptions of Three New Genera of Plants in the Malayan Herbarium of the late 
De. AU Marcar. By Prol. OLIVER, FEES, FEE, fe... . . . . 515 
IX. Observations on Alibertia, with description of a New Species of that Genus. By 
Senr. JOAQUIM CORREA DE MELLO, of Campinas, Brazil. Communicated by Dr. 
VOCE TANIA we o A eee . . . D 
X. On new and rare British Spiders (being a Second Supplement to “ British Spiders 
new to science,” Linn. Trans. vol. xxvii. p. 393). By the Rev. O. P. CAMBRIDGE, 
M.A., C.M.Z.S. Communicated by H. T. STAINTON, Esq., Sec. A A M 
a 
