Vlll CONTENTS. 



Page 

 XLIX, On the Cahispongice, their Position in the Animal King- 

 dom, and their Relation to the Theory of Descendence. By Pro- 

 fessor Ebxst Hackel 421 



L. Observations on Pigs {Sus, Linnseus ; Seiifera, Illiger) and 

 their Skulls, vrith the Description of a new Species. By Dr. J. E. 

 Gray, F.R.S. &c 431 



LI. Note on the Appearance in Australia of the Banak Archippus. 

 By Frederics: M'Coy, Professor of Natural Science in the Mel- 

 bourne University, and Director of the National Museum of Victoria, 

 &c .' 440 



LIT. Descriptions of new Species of Fossorial Hymenoptera in the 

 Collection of the British Museum. By Frederick Smith, Assistant 

 in the Zoological Department, British Museum 441 



Lni. Observations on M. Favre's Paper on a New^Classification 

 of Ammonites. By Dr. J. E. Gray, F.R.S. &c " 451 



Proceedings of the Royal Society 454 



Habits oi Xenurus unicinctus, or Oabassou, by Dr. J. E. Gray, F.R.S., 

 F.Z.S., &c. ; On the Fauna of Nowaja-Semlja, by Prof. Ehlers ; 

 On ^'Le Rat de Madagascar," by Dr. J. E. Gray, F.R.S. &c. ; 

 Note on the Anatomy of Comatula rosacea, by E. Pemer ; On 

 Mammalia from the Neighbom-hood of Concordia, in New 

 Granada, by Dr. J. E. Gray, F.R.S. &c. ; Additional Note on 

 Tolypeiites conurus, by Dr. J. E. Gray, F.R.S. &c. ; On the Re- 

 spiration of the Psammodromi, by M. J. Jullien ; M. Gervais on 

 the Skeleton of the Luth (Spharc/is coriacea) ; On an adult 

 Skeleton of Ti/rse nilotica in the British Museum, by Dr. J. E. 

 Gray, F.R.S. &c. ; Biyozoa of Florida; The late Robert 

 M'Andrew, Esq., F.R.S 463—471 



Index 472 



PLATES IN VOL. XI. 

 Plate I. Alteration of Shell-substance by Hydxactinia. 

 II. Spatulemys Lasalse. 

 III. New Gonyleptidae. 



rv.] 



V. > Development of the Sternum of Chelonlans. 

 VI.j 

 VILi 

 Y^ ' \ New British Fungi. 



X."j 

 XI. Ceratorhinus uiger. 



