^2 Journal of conchoi.ggy, toi,. 14, no. 3, July, 1913. 



[As the publication of these papers was commenced as long ago as 

 1893, 't^ 1^^^ been deemed necessary to add the following supple- 

 mentary notes to bring the subject up to date]. 



SUPPLEMENT: 

 ADDITIONS TO " BRITISH CONCHOLOGY." 



Terebratula cranium Mull.— Off Fair Isle, midway between the 

 Orkneys and Shetlands (Simpson) ! An alleged " T. cranium, 

 dredged in the Bay of Biscay," and presented to the Conchological 

 Society by INIr. Bartlet Span,^ must have been an error, presumably 

 for T. vitrea. Forbes' record of "Tarbert 30 fathoms" must also 

 have been a mistake \ this species is strictly confined to the Shetland 

 seas. A remarkably fine but imperfect specimen from the Aberdeen 

 University Museum, sent me for identification, measures ifin. by igin. 

 var. oblonga Jeff. — Jefifreys describes this in his work, but gives 

 no locality. It occurs occasionally among typical specimens from 

 East Shetlands. Specimens I have received from Dr. Sparre 

 Schneider, dredged at Tromso, all belong to this variety. 



The Scottish Fishery Commissioners have dredged T. cranium in 

 abundance off the Faroes in 71-194^, most of them belonging to the 

 var. oblonga. In one haul of the trawl on the Faroe Banks in 1906 

 "nearly a bushel" of these animals was brought to the surfiice. I 

 suggested that the trawl may have lighted on a veritable graveyard 

 of the Terebratula, brought together by the action of the currents, 

 but my informant, Mr. James Simpson, who was the conchologist 

 during the cruise, replied that it \ras "not a graveyard haul, but a 

 metropolis of living specimens ; there were very few dead among them, 

 and we must have thinned out the population to a considerable 

 extent." 



T. caput-serpentis L. — Mr. MacAndrew's record "British 

 Channel," attached to a tablet of this species in the Cambridge 

 Museum, is too vague to be relied upon. There is no definite record 

 of its occurrence on the English coast. 



I have found it most plentiful in some parts of Oban Bay, and in 

 comparatively shallow water, and this reminds me that it was in Oban 

 Bay itself whence Gwyn Jeffreys procured it in what was his very first 

 essay in dredging operations, which arose in this way. Walking past 

 the then Mr. Sowerby's shop in Bloomsbury one morning, he was 

 called in and shown a specimen of T. caput-serpentis, which had been 

 received from Professor Fleming, and another of Trichotropis borealis, 

 which had just been discovered by Captain Laskey. Gwyn Jeffreys 

 promptly offered ;Q\ for the two shells, but was told they were well 



I Joui-ii. 0/ Condi -^ 1906, vol. 11, p. 316. 



