354 Canon A. M. Norman — Notes on tlie 



colour varies greatly : some are pure white, others rich purple, 

 others mottled with rufous spots on a paler yellowish grouud. 

 The length of full-grown specimens is an inch and a half. I 

 have left to the last the important character which distin- 

 guishes it so markedly from B. ijnenlandicum : the epidermis 

 is perfectiij smooth, and at no age, nor on any specimen that I 

 have seen, could a trace be found of the longitudinal epidermal 

 pleats, crowned with backward directed setose processes, which 

 are so characteristic of B. gneni audi cum. It is not B. par- 

 vuhim, Yerkriizen, it is not at all like his figures, nor has it any- 

 thing to do with a specimen in my collection which came thus 

 named from him indirectly to myself, and which agrees perfectly 

 with his figures, and has the seta-crowned epidermal pleats of 

 B. grcenlandicum. I previously, however, had the form nuda 

 in my collection («) from Professor G. 0. Sars, and {h) from 

 Verkriizeu, labelled in his writing " Buccinuin '? n. sp., Pinmark 

 occidentalis "'; and also a shorter form of the same thing, with 

 the mouth somewhat more expanded, received from Prof. Sars, 

 " Biiccinum grcenlandicum, var. patula." I am rather inclined 

 to believe that this form is not, in the ordinary sense of the 

 term, a variety, but that it is a hybrid between B. undatum 

 and B. grcenlandicum. The conditions under which it occurs 

 are curious. The island to which I have referred is only a 

 little place. At its north-eastern corner between tide-marks 

 B. undatum, var. ccerulea, G. 0. Sars, is found accompanied by 

 ordinary B. grcenlandicum. A little further round — though 

 really close by — for perhaps a hundred yards or so, var. nuda 

 occurs in the greatest profusion ; and beyond this again 

 B. grcenlandicum takes its place with the usual epidermis. 

 The purple colour so prevalent in var. nuda, but totally absent 

 in the normal forms, is exactly the same colour which is so 

 marked in Sars's B. undatum, var. ccerulea. 



Bucchium hydrophanum, Hancock, var. tumiduhim, G. 0. Sars. 

 Varanger Fiord in 100-loU fathoms. 



Odostomia turgida, G. 0. Sars. 



turrita, Hanley. 



unidentaia, Mont. 



Liostomia ehurnea, Stimpson. Yadso, in 10-25 fathoms. 



Pyrgidina eximia, Jeffreys. 



spiralis, Montagu. 



Eulima hilineata. Alder. Entrance to Yadsci Harbour. 



Sccdaria grcenlandica, Miill. Yadsti and Svolv^er, Lofoten, 10-25 

 fathoms. 



var. Loveni, G. 0. Sars. One only. Lang Piord, 15-25 

 fathoms. 



var. crebricostata, G. 0. Sars, One only. Yaranger Piord, 

 100-125 fathoms. 



