FORTHCOMING MONOGRAPHS. 23 
For the Seventy-second Year, 1917. 
99. The Principles of Plant-Teratology. By W. C. Wors- 
peLL. Vol. J. xxix + 270 + 50 pp., 25 plates. 8vo. 1915. 
For the Seventy-third Year, 1916. 
100. The British Marine Annelids. By W. C. McInrosz. 
Vol. III. Part I[.—Plates. viii + 48 pp., 24 plates Folio. 
1915. , 
101. The Principles of Plant-Teratology. By W. C. 
Worsprtt. Vol. Il. xvi + 296 + 56 pp., 28 plates (xxvi- 
hii). 8vo. 1916. 
In Course of Publication. 
The British Freshwater Rhizopoda and Heliozoa. By 
the late James CasH and G. H. Waites. (Vol. V, Heliozoa, 
will complete the work.) 
The British Charophyta. By Jamus Groves and Canon 
Buiitocx-Wessrer. (Vol. inthe press; Vol. IT will complete 
the work.)y 
The British Marine Annelids. By Prof. W. C. McInrosx. 
The British Desmidiacee. By W. and G. 8. West. 
Preparing for Publication. 
The British Apterygota. By J. M. Brown. 
The British Centipedes and Millepedes. By W. M. Wess. 
The British Diatomaceze. By Grorce West. 
The British Earthworms. By the Rev. Hitperic Frrenp. 
The British Ixodoidea. By W. F. Cooper and L. BH. Ropinson. 
The British Orthoptera. By W. J. Lucas. 
The British Trematoda. By Dr. Witt1am Nico. 
Dec. 1918. 
