4 PUBLICATIONS OF THE BAY SOCIETY. 



For the Eleventh Year, 1854. 



26. Bibliographia Zoologia? et Geologise. A General Cata- 

 logue of all Books, Tracts, and Memoirs on Zoology and 

 Geology. By Louis AGASSIZ. Edited by H. E. STRICKLAND. 

 Vol. IV. N-Z. vi + 604 pp. 8vo. 1854. 



For the Twelfth Year, 1855. 



27. A Monograph of the British Nudibranchiate Mollusca. 

 By JOSHUA ALDER and ALBANY HANCOCK. Part VII. vi + 54 

 + 40 -f xlvi pp., 9 plates. Folio. 1855. 



For the Thirteenth Year, 1856. 



28. A Monograph of the Fresh-water Polyzoa, including all 

 the known species, both British and Foreign. By GEORGE 

 JAMES ALLMAN. Yiii + 122 + 22 pp., 11 plates. Folio. 1856 

 [1857]. 



For the Fourteenth Year, 1857. 



29. The Recent Foraminifera of Great Britain. By WILLIAM 

 CRAWFORD WILLIAMSON, xx + 108 pp., 7 plates. Folio. 

 1858. 



For the Fifteenth Year, 1858. 



30. Tlie Oceanic Hydrozoa ; a Description of the Calyco- 

 phorida? and Physophoridae. . . . By THOMAS HENRY HUXLEY. 

 x + 144 + 24 pp., 12 plates. Folio. 1859. 



For the Sixteenth Year, 1859. 



31. A History of the Spiders of Great Britain and Ireland. 

 By JOHN BLACK WALL. [Part I.] vi + 174+24 pp., 12 

 plates. Folio. 1861. 



For the Seventeenth Year, 1860. 



32. Introduction to the Study of the Foraminifera. By 

 WILLIAM B. CARPENTER, assisted by WILLIAM K. PARKER and 

 T. RUPERT JONES, xxii + 320 + 44 pp., 22 plates. Folio. 

 1862. 



For the Eighteenth Year, 1861. 



33. On the Germination, Development, and Fructification of 

 the Higher Cryptogamia, and on the Fructification of the 

 Coniferae. By WILHELM HOFMEI&TER. Transl. by FREDERICK 

 CURREY. xviii + 506 pp., 65 plates. 8vo. 1862. 



