THE ANNALS 
AND 
MAGAZINE OE NATURAL HISTORY. 
[SIXTH SERIES.] 
No. 33. SEPTEMBER 1890. 
XXVI. — Natural History Notes from H.M . Indian Marine 
Survey Steamer c Investigator f Commander R. F. Hoskyn , 
R.N., commanding . — No. 16. On the Bathybial * Fishes 
collected in the Bay of Bengal during the season 1889-90. 
By A. Alcock, M.B., Surgeon I. M. S., Surgeon-Natu- 
ralist to the Survey. 
[Plates VIII. & IX.] 
Contents. 
§ 1. Enumeration and Topography of the Dredging Stations. 
§ 2. Review of the Collection, with List of the Fishes and Descrip- 
tions of new Species. 
§ 1 . The Dredging Stations . 
Of nine hauls of the trawl in depths of a hundred fathoms 
and over within the limits of the Bay of Bengal during the 
surveying-season of 1889-90, only five added anything to the 
collection of fishes, and it will not be necessary to mention 
here any but these five. 
* Following the precedent of Dr. Gunther, I have here taken the 100- 
fathom line as the near boundary of the bathybial fauna. In the Bay of 
Bengal, at any rate, where already at 70 fathoms we find among all the 
classes of marine animals numerous characteristic reactions to bathybial 
conditions, the 100-fathom line appears to be a sufficiently unequivocal 
limit. 
Ann . & Mag. N. Hist. Ser. 6. Vol . vi. 15 
