PUBLICATIONS OF THE RAY SOCIETY. 
British Hemiptera-Heteroptera. 
By J. W. Douglas and John Scott. £\. 1 Is. 6d. 
Cirripedia Family. 
By C. Darwin, Esq. 2 vols. £2. 2s. 
British Freshwater Polyzoa. 
By Professor Allman. £ l . lls. 6d. 
Recent Forarttinifera. 
By Professor Williamson. £1. lls. 6d. 
Oceanic Hydrozoa. 
By Professor Huxley. £ l . lls. 6d. 
Organization of Trilobites. 
From the German of Burmeister. 15s. 
British Naked-eyed Pulmograde Medusae. 
By Professor E. borbes. j^Is. Is. 
The Spiders of Great Britain and Ireland. 
By J. Blackwall, F.L.S. 2 vols. £3. 13s. M. 
Foraminifera. 
By Dr. Carpenter. £ l . lls. 6d. 
Fructification of Higher Crvptogamia, and 
Coniferae. 
From the German of Hofmeister. £ l » 5s. 6d. 
Reptiles of India. 
By Dr. Gunther. £2. 2s, 
British Spongiadae. 
By Dr, Bowerbank. Yol. I. £U 10s. 
Steenstrup on Alternation of Generations. 
10s. 6d. 
British Entomostracous Crustacea. 
By Dr. Baird. £\ . Is. 
British Angiocarpous Lichens. 
By Rev. W. A. Leighton. 10s. 6d. 
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