CONTENTS. Vll 



Page 

 XHI. On some supposed new Species of Birds from Celebes and 

 the Togian Islands. Bj Arthur, Viscount Walden, P.Z.S., F.R.S. 398 



XLIII. On a new Species of Thrush pertaining to the Genus 

 Oreocincla. By John Gould, F.R.S. &c 401 



Proceedings of the Royal Society 402 — 404 



On the Genus Osteocdia, by Dr. J. E. Gray, F.R.S. kc. ; Further 

 Remarks on the Relationship of the Limididce (Xiphostira) to 

 the Eurypteridee and to the Trilobita, by Henry Woodward, Esq., 

 F.G.S. ; On some Pupipara parasitic upon Chiroptera, by Dr. 

 F. Rudow : 405—407 



NUMBER LIV. 



XLrV. On two new Sponges from the Antarctic Sea, and on a new 

 Species of Tetlnja from Shetland ; together with Observations on the 

 Reproduction of Sponges commencing from Zygosis of the Sponge- 

 animal. By H. J. Carter, F.R.S. &c. (Plates XX., XXI., & 

 XXII.) .409 



XLV. On the New-Zealand Bottlenose {Lagenorhynchus clancidus, 

 Gray;. By Dr. James Hector, F.R.S 436 



XLVI. Notice of two new Fishes from Celebes. By Dr. Albert 

 GtJNTHER 438 



XLVII. On a Subfossil Whale {Eschrichtius rohiistus) discovered 

 in Cornwall. By William Henry Flower, F.R.S 440 



XLVIII. Notes on the Classification of the Sponges. By Dr. J. 

 E. Gray, F.R.S. &c 442 



XLIX. Investigations upon the Structure and Natural History of 

 the Vorticellce. By Dr. Richard Greef 462 



L. On Indian Mud-Tortoises (Trionyx). By Dr. J. E. Gray, 

 F.R.S. &c 473 



New Books : — A History of the Birds of New Zealand, by Walter 

 Lawry BuUer, Sc.D., F.L.S., F.G.S., &c. Part I. — A Synony- 

 mic Catalogue of Diurnal Lepidoptera, by W. F. Kirby . . 475, 47! 



The late George Robert Gray; Jukella, a new Alcyonarian from 

 Sir C. Hardy's Island, by Dr. J. E. Gray, F.R.S. &c. ; Thouarella 

 awtorc^/cfl, from the Falkland Islands, by Dr. J. E. Gray, F.R.S. &C.5 

 Prize Question proposed by the Danish Royal Society of Sciences 



