IV CONTENTS. 



NUMBER II. 



Page 



XII. Notes on various Species of Ctenodus obtained from the 

 Shales of the Northumberland Coal-field. By Thomas Atthey . . 77 



XIII. On the presence of two Glandular Sacs in the Cephalothorax 



of the Phalangiidce. By Dr. A. Keohn 87 



XIV. Observations on the Distribution of some Species of Nudi- 

 branchiate Mollusca in the China Sea. By Dr. C. Collingwood, 

 F.L.S : 90 



XV. Remarks on the Names applied to the British Ilemiptera 

 Heteroptera. By Fbancis P. Pascoe, F.L.S. &c 94 



XVI. Notes on the Sexes of the CocyUis Group of the Genus 

 Adolias. By A. G. Butlee, F.Z.S 97 



XVn. Observations on Sea-Bears (Otanadts), and especially on 

 the Fur-Seals and Hair-Seals of the Falkland Islands and Southern 

 America. By Dr. J. E. Gray, F.R.S., V.P.Z.S., F.L.S., &c 99 



XVni. On the Occurrence of Diplommatina Huttoni and Ennea 

 bicolor in the West Indies. By William T. Blanfokd, F.G.S., 

 C.M.Z.S 110 



XIX. On the Discovery of a new and Gigantic Fossil Species of 

 Echidna in Australia. By Gebard Krefft, Curator and Secretary 



of the Australian Museum, Sydney ; 113 



XX. On the "■ Viti-eous" Sponges. By Prof. Wyville Thomson, 

 LL.D., F.R.S.E., F.G.S., M.R.I.A. (Plate IV.) 114 



XXI. Notul* Lichenologicaj. No. XX. By the Rev. W. A. 

 Leighton, B.A., F.L.S 133 



XXII. On the SpongicB ciliatcs as Infusoria Jlayellata ; or Observa- 

 tions on the Structure, Animality, and Relationship of Leucosolenia 

 hotnjoides, Bowerbauk. By H. /ames-Claek, A.B., B.S., Professor 

 of Natural History in the Agricultural College of Pennsylvania. 



iry 1 

 rk) 



(Plates v., VI., VII.) ib. 



New Books : — The Natural History of the Tineina, by H. T. Stainton. 

 Vol. X.— The Tineina of Syiia and Asia Minor, by H. T. Stain- 

 ton, F.L.S. — The Fishes of Zanzibar. Acanthoptebygii, by 

 Lieut.-Colonel R. Lambert Playfair, Her Majesty's Political 

 Agent and Consul at Zanzibar. Pharyngognathi &c., by 

 Albert C. L. G. Giinther, M.A., Ph.D., M.D 142—144 



Proceedings of the Royal Society 145 



Errata in Localities of Indian and Burmese Squin-els — Necessity of 

 defining more exactly what is understood by India, by WiUiam 

 T. Blanford ; Preservation of Obj ects of Natural History, by Wil- 

 mot H. T. Power, Assistant-Surgeon, 13th Light Infantry ; On 

 Leskia nm-abilis, by Dr. J. E. Gray, F.R.S.t&c; Macaciis /asivtus, 

 a new Ape from China, by Dr. J. E. Gray ; Additions to the 



