IV CONTENTS. 



Page 



X. On the Anatomy of Eolis, a genus of MoUusks of the order Nu- 

 dibranchiafa. By Albany PIancock and Dennis Embleton, M.D,, 

 F.R.C.S.E., Lecturer on Anatomy and Physiology in the Newcastle- 

 upon-Tyne School of Medicine 77 



XI. Memoirs on Geographic Botany. By Richard Brinsley Hinds, 

 Surgeon R.N., F.R. Coll. Surg. {Continued.) 89 



XII. On the Preservation of Objects of Natural History for the 

 Microscope, By the Rev. M. J. Berkeley, F.L.S 104 



XIII. A Century of new Genera and Species of Orchidaceous Plants. 

 Characterized by Professor Lindley 106 



XIV. Description of an apparently new species of Longicorn Beetle 

 from Mexico in the Collection of the British Museum. By Adam 

 Whiti:, Assistant Zool. Dep. Brit. Mus. (With a Plate.) 108 



XV. Note on a British Shell of the genus Circe. By William King, 

 Curator of the Museum of the Natural History Society of Northumber- 

 land, Durham, and Newcastle-upon-Tyne 112 



XVI. Note on the Boring Apparatus of the Carnivorous Gastero- 

 pods, and of the Stone- and Wood-burrowing Bivalves. By Albany 

 Hancock, Esq 113 



XVII. On a new species of Plafycercus. By John Gould, F.R.S. 114 



XVIII. On the Means by which various Animals walk on the Ver- 

 tical Surfaces of highly polished Bodies. By John Blackwall, F.L.S. 115 



XIX. Remarks on the Synonyms of a Homopterous Insect described 

 in the last Number of the * Annals.' By Adam White, Assistant Zool. 

 Dep. Brit. Mus 119 



Proceedings of the Royal Society of Edinburgh ; Zoological Society ; 



Geological Society; Botanical Society of London 121 — 140 



Notes in Natural History, by G. Clarke, Esq., Mauritius ; Ehrenberg's 

 Researches on Infusoria ; Occurrence of the Anoplotherium in the 

 lowest layers of the Tertiary period of the Paris Basin, by M. E. 

 Robert ; Description of a new Australian Bird, by J. Gould ; Biblio- 

 graphical Notice; Meteorological Observations and Table... 140 — 144 



NUMBER XCVII. 



XX. Miscellanea Zoologica. By George Johnston, M.D., Fellow 



of the Royal College of Surgeons of Edinburgh. (With a Plate.) 145 



XXI. On the British Desmidiecp. By John Ralfs, Esq., M.R.C.S., 

 Penzance. (With a Plate.) 149 



XXII. On the Morphology of the different Organs of Zoophytes. By 



R. Q. Couch, M.R.C.S.L. (With a Plate.).... 161 



XXIII. Ornithological Notes. By John Blackwall, F.L.S 166 



XXIV. On the " Nigger " or *' Cotton Spinner " of the Cornish 

 Fishermen. By Charles William Peach, of Goran Haven, Cornwall 

 (With a Plate.) 171 



