REPORT 



ON THE 



SCIENTIFIC RESULTS 



OK THE 



VOYAGE OF H.M.S. CHALLENGER 



nil RING THE YEARS i 8 73-76 



UNDER THE COMMAND OF 



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



AND 



Captain FRANK TOURLE THOMSON, R.N. 



PREPARED UNDER THE SUPERINTENDENCE Of' 



THE I.ATE 



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



KEGIUS PROFESSOR OF NATURAL HISTORY IN THE UNIVERSITY OF EDINBURGH 

 DIRECTOR OF THE CIVILIAN SCIENTIFIC STAFF ON BOARD 



AND NOW OF 



JOHN MURRAY, F.R.S.E. 



ONE OF THE NATURALISTS OF THE EXPEDITION 



Zoology — Vol. VII. 



PART XIX.— REPORT ON THE PELAGIC HEMIPTERA. 



IPubltsijeU bp cf^rlier of L^er jHajestp's ®olicrnment 



I 



c 



PRINTED FOR HER MAJESTY'S STATIONERY OFFICE 



AND SOLD BY 



LONDON :— LONGMANS & CO.; JOHN MURRAY; MACMILLAN & CO.; SIMPKIN, MARSHALL & CO. 

 TKUBNER & CO.; E. STANFORD; J. D. POTTER; and KEGAN PAUL, TRENCH, & CO. 

 EDINBURGH :— ADAM & CHARLES BLACK and DOUGLAS & FOULIS. 

 DUBLIN :— A. THOM & CO. and HODGES, FIGGIS, & CO. 



1883 



Price Three Shillings and Sixpence. 



