CONTENrS OF VOL. XX. 



[FOURTH SERIES.] 



NUMBER CXV. 



Page 



I. On the Distribution of Birds in North Russia. — II. Longitudinal 

 Distribution of Species North of 64'' 30' N. lat., or the Northern 

 Division. By J, A. Harvie Brown, F.Z.S., Member of the British 

 Ornithologists' Union 1 



II. Notes on Carboniferous Polyzoa. By R. Etheridge, juu., 

 F.G.S. (Plate II. a.) .' '. . . . 30 



III. Arctic and Antarctic Sponges &c. By H. J. Carter, F.R.S. 



&c. (Plate I.) 38 



IV. Descriptions of Asiatic Diurnal Lepidoptera. By Frederick 

 Moore, F.Z.S 43 



V. Report on the Crustacea collected by the Naturalists of the 

 Arctic Expedition in 1875-76. By Edward J. Mikrs, F.L.S., 

 F.Z.S., Assistant in the Zoological Department, British Museum . . 52 



VI. Note on Lists of Arctic Hydroida and Polyzoa published in 

 the ' Annals ' for February 1874 and January 1877. By the Rev. 

 Thomas Hincks, B.A., F.R.S 66 



VII. On the Branched Form of the Apertural Prolongation from 

 the Summit of Carpenteria munticularis. By H. J. Carter, F.R.S. 



&c 68 



VIII. On the Salenidce, Wright. — Part I. Observations on the 

 Morphology of a Recent Salenia. By P. Martin DuN(;an, F.R.S., 

 Pres. Geol.' Soc. (Plate II. B.) 70 



IX. On a small Collection of Oi'thopterous Insects of the Families 

 Phasmidce and Mantidce from Australia and New Britain, with De- 

 scriptions of ft -ir new Species. By Prof. J. "W ood-Mason, Deputy 

 Superintendent, Indian Museum, Calcutta 74 



X. On Ovulites margaritula. By Professors W. K. Parker and 



T. R. Jones 77 



Zoology of the 'Challenger' Expedition; The Locomotor System- 

 of Meduste 79, 80 



NUMBER CXVI. 



XI. On the Structure cf Peripatus novce-zealandiie. By Capt. F. 

 W. Hutton 81 



