83 A. R. S. Anderson — Deep Sea Crustacea. [No. 2, 



Natural Kistonj Notes from the B. I. M. Survey Steamer ' Investigator,' 

 Commavder G. F. Oldham, R. N., commanding. Series II, No. 21. 

 An Account of the Deep Sea Crustacea collected during the season 

 1894-95, — By A. R. S. Anderson, B. A., M. B., Surgeon Naturalist 

 to the Survey. 



[Received 28th April— Read 6th May.] 



The following paper gives a description of the 56 species of 

 Crustacea, exclading Cirripeds, Amphipods and Pagurids collected 

 by the R. I. M. S. ' Investigator ' during the working season J894-95. 



From the middle of October 1894 to the beginning of January 

 1895, while at work in the Arabian Sea between Cape Monza — some 20 

 miles to the west of Karachi and Bombay — four hauls of the trawl 

 were made between 100 and 200 fms. ; but, with the exception of large 

 numbers of Selenocera hextii, no crustaceans were obtained. 



In the same area, two hauls were effected at 890 and 947 fms. and 

 resulted in the capture of respectively 8 and 11 different species of 

 crustaceans ; of these only four are new to the Indian fauna, viz. 

 Acanthephyra cristata, Faxon, Nephropsis Suhmi, Bate, Calastacus 

 investigatoris and Galacantha trachynotus, the two last being hitherto 

 U!idescribed species. One Isopod, Aega sp., was also obtained at 947 

 fms., and is new to our record and apparently new to science. 



On the passages between Bombay and Trincomali and vice versa 

 6 trawls, varying in depth from 637 to 931 fms. were made and resulted 

 in the capture of 0, 4, 6, 5, 7 and 8 species of crustaceans. Four of 

 tiiese species were new to the Indian fauna, but of these two, Nephropsis 

 Sahmi and Galacantha trachynotus, were also obtained this season 

 between Karachi and Bombay : the remaining two species were Eucopia 

 sculpt icauda and Bentheuphausia amhlyops. 



In four trawls between 180 and 406 fms. 5, 7, 3 and 2J species of 

 crustaceans were obtained, of which 5 only are new to the Indian 

 record, and of these one had also been captured at 951 fms. this season ; 

 3 of the remainder, Pandalus alcocki and Munidopsis wardeni, both 

 from 406 fms., and Trichopeltarion ovale from 180 fms. prove to be 

 now species. The fifth, Lithodes agasizii from 40G fms., is the first 

 recorded specimen of a Lithodes from Indian waters. 



List of the stations, ovei* 200 fms. from which crustaceans were 

 obtained. 



