EDITOEIAL NOTE. 
The collections of Amphipoda procured in the trawls, dredges, and tow- 
nets during the voyage of H.M.S. Challenger were placed in the hands of 
the Eev. Thomas E. E. Stebbing for examination and description in the 
summer of 1882. From not long after that date up to the present time 
Mr. Stebbing has been almost exclusively occupied in the work connected 
with the preparation of this extensive and valuable Eeport, which will be 
welcomed by all students of the Crustacea. 
There is the same uneertainty conneeted with the Amphipoda as with 
several other groups of animals taken in the trawls and tow-nets, as to the 
depths at which the specimens were captured. Some were undoubtedly 
taken at or near the bottom, while others were as certainly taken in the 
surface and subsurfaee waters, but with others again there is a great deal 
of doubt. Although a record of the depths to whieh the nets were let down 
was attached to the specimens, the naturalists of the Expedition did not 
intend to convey the impression that the specimens necessarily came from 
the depths indicated. 
This Eeport, which forms part LXVII. and Volume XXIX. of the 
Zoological Series of Eeports, eonsists of 1774 pages of letterpress, Avith 
212 Plates and a Map. The whole is bound up in three separate portions, 
two of letterpress and one of Plates. 
The first Instalment of the Manuscript was received by me on the 5th 
December 1885, and the last on the 30th Xovember 1888. 
John Mueray. 
Challenger Office, .32 Queen Street, 
Edinburgh, Decemler 5, 1888. 
