26o JOURNAL OF CONCHOLOGY. 



NEW BRITISH MARINE SHELLS. 



By J. T. MARSHALL. 



(Read before the Conchological Society Oct. 8th, 1890.) 



Sundry British specimens of Eidima coming into my posses- 

 sion during the last ten years having been put aside as doubtful, 

 and left undetermined for want of leisure, it is only recently, on 

 looking over the 'Challenger' report, with its excellent figures, 

 that I detected the close resemblance of some of them to the 

 E. ephamilla of Watson f — a species found during the 'Chal- 

 lenger' expedition 'off Pernambuco, in lat. 9^5' S., long. 34*^ 

 50" W., in 350 fathoms, red mud.' 



Being doubtful as to the identity of a species from such a 

 locality and depth with one from the British coasts, I sent a 

 specimen to the Rev. Boog Watson for his opinion and verifica- 

 tion, to which he replied:- -'I have checked your shell with my 

 description, which fits it very well indeed, and the measure- 

 ments come very close I am very strongly 



inclined to believe your shell is E. ephamilla; but I have no 

 specimen, the only one obtained being preserved in the British 

 Museum .... and as to locality, depth harmonises 

 many things.' 



Mr. Edgar Smith was then kind enough to compare it with 

 the 'Challenger' specimen in the Museum, and wrote me:— 

 'I have carefully compared your Eullma with E. ephamilla (of 

 which only one specimen in bad condition is known), and can- 

 not see any reason for separating it.' 



As the 'Challenger' report is not, or ever likely to be, 

 readily available for general collectors, I append the Rev. 

 Boog Watson's description and remarks, with a few interpo- 

 lations which could not be determined from the ' Challenger' 

 example:— 



t Prelim. Report, part 17, Journ. Linn. Sec. Lend., vol, xvii., p. 116, sp. 6. Also 

 'Challenger' Report, pp. 511 — 12, pi. xn,\v., fig. 6. 



J.C, vi., Oct., 1890, 



