Indian Deep-sea Dredging, 3 



Grade A. PL AS TID Z A. 

 Class EETICULARIA. 



The Foramiiiifera of the Bay of Bengal have been largely 

 determined by Dr. John Murray from small quantities of 

 deep deposit sent home by Commander A. Carpenter, E..N., 

 D. S. O., lately in charge of the Marine Survey of India. 

 The results of one of Dr. Murray's analyses of mud brought 

 up by the 'Investigator' from the Bay of Bengal (lat. 17° 

 34' In\, long. 87° 59' E., 1300 fathoms) will be found in the 

 * Magazine of the Scottish Geographical Society,' vol. v. 

 p. 420 (August 1889), to which it is sufficient for our purpose 

 to refer. 



Oflf the west coast of the Andamans, in 240 to 220 fathoms, 

 a few specimens of Masoyiella planulata, H. B. Brady, were 

 found adhering to the tangles. Masonella, it may be recalled, 

 is a new Astrorhizid genus instituted by Dr. Brady (Ann. & 

 Mag. Nat. Hist. (6) iii. (1889), p. 293) for the reception of 

 two species of Andaman 'Investigator' Foraminifera with 

 large discoid, arenaceous, reticulated tests, in the radiating 

 tubules of which the living sarcode is contained. lu sorting 

 the collection specimens were discovered {Pi'omasonella^ 

 Wood-Mason) which establish a connecting-link between 

 Asti-orhiza and Masonella ; and of this genus there are two 

 species, Promasonella Carpenteri^ Wood-Mason, and P. 

 alterniramisj Wood-Mason. 



Grade B. EKTEROZOA. 



SubgradeA. CCELENTERATA. 



Phylum NEMATOPHORA. 



Class SCYPHOMEDUS.ffi. 



Order DISCOMEDUS^. 



Family Ephyridae (Collaspid.e) . 



Atolla, Hseckel. 



Two slightly differing specimens of a species of this ' Chal- 

 lenger ' deep-sea form were taken — and they were the only 

 deep-sea ^Medusse taken — during the season. Both were 

 trawled in the Bay of Bengal, off the Madras coast, one in 840, 

 the other in 920 to 690 fathoms. 



Both have the central disk of the exumbrella, inside the 



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