RAY SOCIETY. 
ANNUAL SUBSCRIPTION ONE GUINEA. 
Recentiy Issuzp anp Forracomina Monocrapas. 
For the Siety-first Year, 1904, 
A Monograph of the British Desmidiacezee. By W. Wusr and 
G. S. Wesr. Vol. I. xxxvi + 224 4 64 pp., 32 plates. 
8vo. 1904. 
The British Tunicata. By the late Josava AnpeR and the 
late Arpany Hancock. Edited by Jonn Hopkinson, with 
a history of the work by the Rev. A. M. Norman. xvi 
+ 148 + 40 pp., 20 plates, and frontispiece. 8vo. 1905. 
For the Stxty-second Year, 1905. 
A Monograph of the British Desmidiacee. By W. Wesr 
and G. 8S. West. Vol. II. x + 206 + 64 pp., 32 plates 
(xxxili-Ixiv). 8vo. 1905. 
The British Freshwater Rhizopoda and Heliozoa. By James 
Cas, assisted by Joun Hopginson. Vol. J. The Rhizo- 
poda, Part I. x + 150 + 32 pp., 16 plates. 8vo. 1905. 
In Course of Publication. 
The British Annelids. By Prof. W. C. McInrosa. 
The British Desmidiacee. By W. Was and Prof. G. 8. 
West. 
The British Freshwater Rhizopoda and Heliozoa. By Jamus 
Cas#. 
The British Tunicata. By the late Josnua Atper and the 
late AtBANyY Hancock. 
Preparing for Publicatin. 
The British Centipedes and Millepedes. By Witrrep Marx 
Wass. 
The British Characee. By Henry and James Groves. 
The British Parasitic Copepoda. By Dr. Tuomas Scorr and 
Awyprew Scort. 
The British Sphagnacee. By H. C. Horrett. 
