CONTENTS. 
XVIII. Notice of Spiders, indigenous to the Salvages, received 
from the Bar‘o do Castello de Paiva. By Joun Buackwatt, F.L.S. 
XIX. Descriptions of Twenty-six new Species of Australian Land- 
Shells. By James C. Cox, M.D., Sec. Entomological Society of 
News South Wales: ...ccsas0-csocceassescaceesenss/ Appooebodtictade Bedielicismoete cle 
XX. Histological Researches on the Formation, Development, 
and Structure of the Vegetable Cell. By Prof. H. Karsten ...... 
XXI. On a new Generic Type of Fishes discovered by the late 
Dr. Leichardt in Queensland. By ALBERT Gintuer, M.A., M.D., 
Does (Ltr WRe) act.c circa stetens Cneea sas risa ceticarsiotcindasesins vaselesatise el 
XXII. Description of a new Species of Callionymus from Australia. 
Bypui reat Bioeds CulUN DEER | Voevenacaace seca rc ccaccsemene Recess ses sdaqavnsicne 
XXII. On the Structure of Antipathes. By M. Lacaze- 
POA EM EME Ste cretaeths cients aliases salstiigajataiera'asaeresids seq setnnescuahearmseales seer 
XXIV. On Clays, containing Fossils, near St. Andrews; with 
Remarks on some of the latter. By RoBERT WALKER ...........000e 
XXV. Some Remarks on the Succession and Development of 
Animal Organization on the Surface of our Globe, in the Different 
Periods of its Existence. By J. VAN per Hoeven, Professor of 
Vi 
Page 
174 
180 
185 
200 
Zaolory, University Of Leyden .s.c..csnsuns+carcscaspeccacevecsssacecees Scones 240M) 
Proceedings of the Zoological Society .........++ seas ralstuieaeansls ss 221—232 
Species of Mollusca obtained in Corunna Bay, by R. M‘Andrew, F.R.S., 
F.L.S., and H. Woodward, F.G.S., F.Z.S., in May 1863; On 
Arachnactis brachiolata, a Natatory Actinia, discovered near 
Nahant, Massachusetts, by Alexander Agassiz; The Great Auk, 
by Robert Champley, Esq. ; Some Observations on the Genus 
Amoria, with Descriptions of some new Varieties, by Dr. J. E. 
Gray, F.R.S. &c.; On the Motory Phenomena of the Sponges, 
by N. Lieberkihn; On the Geographical Distribution of the 
Annelida, by A. de Quatrefages; On a new Species of Turacus, 
yg Grn, Fu OIAY vcvaadsccecanceseesn sora comive titan rerccaatecnteres 232—240 
NUMBER LXXXII. 
XXVI. On the Antipatharian Genus Gerardia. By M. Lacaze- 
DUTHIERS ......... BOB Oc SROCOR COCR ESTAS COCR EE TRST EAE A EER CaSC RATT ae Sa inE ene 941 
XXVII. Descriptions of new Species of Fluviatile and Terrestrial 
Opereulate Mollusea from Trinidad. By R, J. LEcuMrersr Guppy . 243 
XXVIII. On the Asserted Occurrence of Flint Knives under a 
