CONTENTS. 
PART IV.—1873. 
VI. On the Development of the Flowers of Welwitschia mirabilis, Hook. Jl. By Wu- 
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. . . page 507 
VII. On Begoniella, « New Genus of P dcm = New Granada. By Professor 
OLIVER, FRS., ELS., $c. , : : . 518 
VIII. Descriptions of Three New Genera of Plants in the Malayan Herbarium of the late 
w 
Dr. A. C. MarscaY. By Prof. OLIVER, F.R.S., FI MV. eee 
IX. Observations on Alibertia, with description of a New Species of that Genus. By 
Senr. Joaquim CORREA DE MELLO, of ON Brazil. Communicated by Dr. 
BENE BD um.uw os xo oii "ecu oU RE T 
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 EL. T. Stainton, Eug. See. LS. ^. . . 523 
