354 Canon A. M. Norman— iVofe.s on the 



colour varies greafclj' : some are pure white, others rich purple, 

 others mottled with rufous spots on a paler yellowish ground. 

 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. grcenlandicum : the epidermis 

 is perfectly 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. grcenlandicum. It is not B. par- 

 vidtim, Verkriizen, 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 previouslj', however, had the form nudri 

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

 Verkriizen, labelled in his writing " Baccinum ? n. sp., Pinmark 

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

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

 " Buccinum grcenlandicum, var. patida.'" I am rather inclined 

 to believe that this form is not, in the ordinaiy 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. gr<xnlandicum 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. itndatum, var. ccerulea. 



Buccinum hgdropJianum, Hancock, var. tumididum, G. 0. Sars. 

 Varanger Piord in 100-150 fathoms. 



Odostomia turgida, G. 0. Sars. 



turrifa, Hanley. 



unidentata, Mont. 



Liostomia eburnea, Stimpson. Vadso, in 10-25 fathoms. 



Pgrgidina eximia, Jeffreys. 



spnralis, Montagu. 



Eulima, hilineata. Alder. Entrance to Vadsij Harbour. 



Sccdaria grcenlandica, Moll. Vadso and Svolvser, Lofoten, 10-25 

 fathoms. 



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

 fathoms. 



var. crehricostala, G. 0. Sars. One only. Varanger Piord, 

 100-125 fathoms. 



