On the Dathyhial Fishes of the Arabian Sea. 295 



XXXI V. — Natural History Notes from H.M. Indian Marine 

 Survey Steamer ' Investigator ^ Commander R. F. Iloskyn, 

 M.N.j commanding. — No. 18. On the Bathyhial Fishes of the 

 Arabian Sea, obtained during the season 1889-90. By A. 

 Alcock, M.B., Surgeon I. M. S., Surgcou-Niituralist to 

 the (Survey. 



Contents. 



§ 1. Sketch of the Hydrography and Zoology of the Dredging 



Stiitions. 

 § 2. Notes on the Fishes, with Descriptions of new Species. 



§ 1 . Sketch of the Hydrography and Zoology of the 

 Dredging Stations. 



The bathybial fishes which the ' Investigator ' has to record 

 from the Arabian Sea number nineteen specimens, of fifteen 

 species, thirteen genera, and six families, all of which were 

 obtained in two hauls of the trawl at the following stations : — 



Station 104.— 11 a.m. to 4 p.m., 3rd May, 1890. 



Lat. 11° 12' 47" N., long. 74° 25' 30" E., oft^the Elicapeni 

 Bank, in the Laccadive Sea. Depth 1000 fathoms. Tem- 

 perature at the surface 83° Fahr., at the bottom 38°'6 Fahr. 

 Bottom olive mud, with 2"15 per cent, of shells of Foramiui- 

 fera, chiefly Glohigerina and Palvinulina. 



Besides nine species of fishes, the trawl contained numerous 

 specimens of Sponges (including Hyalonema and Polio pog on'}), 

 Alcyonids, Actinids, Turbinolid Corals ( Garyophyllia) , Echi- 

 noids (including Fhormosoma), Asteroids, llolothuroids 

 (including Deima), and Crustaceans (chiefly Penajids). 



Station 105.— 7 A.M. to 12 noon, 5th May, 1890. 



Lat. 15° 02' N., long. 72° 34' E., about 75 miles west of 

 the Goa coast, Laccadive Sea. Depth 740 fathoms. Tem- 

 perature at the surface 83° Fahr., at the bottom 44° Fahr. 

 Bottom coral-mud, with 12 per cent, of Foraminifera shells. 



Besides six species of fishes, the haul brought to light a 

 very large number of Crustaceans (Isopods, Pena^ids, Palse- 

 monids, Crangonids, Homarids, Pagurids, Galatheids and 

 Homolids) ; Actinids, Turbinolid Corals ; Astropectinids, 

 Ophiurids, Echinoids (including Asthenosoma), Holothuroids ; 



21* 



