REPORT 



ON THE 



SCIENTIFIC RESULTS 



OF THE 



VOYAGE OF H.M.S. CHALLENGER 



DURING THE YEARS i873-76 



UNDER THE COMMAND OF 



CAPTAIN GEORGE S. NARES, R.N., F.R.S. 



AND THE LATE 



t 



CAPTAIN FRANK TOURLE THOMSON, R.N. 



PREPARED UNDER THE SUPERINTENDENCE OF 



THE LATE 



Sir C. WYVILLE THOMSON, Knt, F.R.S., &c. 



REGIUS PROFESSOR OF NATURAL HISTORY IN THE UNIVERSITY OF EDINBURGH 

 DIRECTOR OF THE CIVILIAN SCIENTIFIC STAFF ON BOARD 



AND NOW OF 



JOHN MURRAY 



ONE OF THE NATURALISTS OF THE EXPEDITION 



ZOOLOGY VOL. XVIII. 



SECOND PART 



bp <0rUer of l>ei: Jflajestp's tfotoernment 



PRINTED FOR HER MAJESTY'S STATIONERY OFFICE 



AND SOLD BY 



LONDON : EYRE & SPOTTISWOODE, EAST HARDING STREET, FETTER LANE 



EDINBURGH : ADAM & CHARLES BLACK 



DUBLIN : HODGES, FIGGIS, & CO. 



1887 



Price (in Two Parts, with a Volume of Plates) $, icxr. 



