CONTENTS. V 



Page 



XXIII. Characters of some apparently undescribed Ceylon Insects. 



By F. Walker,F.L.S 217 



XXIV. Descriptions of two new species of American Parrots. By 

 Philip Lutley Sclater, M.A., Sec. Zool. Soc 224 



Proceedings of the Royal Society 226 — 237 



Note on the Affinities of Rhynchosaurus, by Prof. Richard Owen, 

 F.R.S.; Note on Bulimus acutus, by Dr. J. E. Gray, F.R.S. &c; 

 On the Opercula of several species of Megalomastoma, by W. H. 

 Benson, Esq. ; On two new species of American Ant-Thrushes, 

 by P. L. Sclater, F.R.S. ; On the Habits of Aplysiopterus viridis, 

 by Dr. J. E. Gray, F.R.S. &c. ; Description of a new species of 

 Tcenia, by W. Baird, M.D., F.L.S 237—240 



NUMBER XXII. 



XXV. On the supposed Existence of Cellulose in Starch-grains. 



By H. vox Mohl 241 



XXVI. Descriptions of newly-discovered Spiders captured by James 

 Yate Johnson, Esq., in the Island of Madeira. By John Black- 

 wall, F.L.S 255 



XXVII. On some additional Species of Nudibranchiate Mollusks 

 from Ceylon. By E. F. Kelaart, M.D 267 



XXVIII. Descriptions of new Genera and Species of Phytophagous 

 Insects. By J. S. Baly, Esq 270 



XXIX. On Digestive Power in the Actinia. By E. W. H. Holds- 

 worth, F.L.S. &c 275 



XXX. Description of several species of Entomostracous Crustacea 

 from Jerusalem. By W. Baird, M.D., F.L.S. (With two Plates.). 280 



XXXI. Centuries of North American Fungi. By the Rev. M. J. 

 Berkeley, M.A., F.L.S., and the Rev. M. A. Curtis, D.D 284 



XXXII. Notice of a new Antelope (Kobus) from Central Africa. 



By John Edward Gray, F.R.S. &c 296 



Neiv Books : — Reports of ^Explorations and Surveys to ascertain the 

 most practicable and economical Route for a Railroad from the 

 Mississippi River to the Pacific Ocean, made under the direction 

 of the Secretary of War in 1853-6. — Animal Physiology, by 

 William B. Carpenter, M.D., F.R.S., F.G.S., F.L.S 298, 299 



Proceedings of the Royal Society ; Zoological Society 300 — 311 



