:;i 



(Brek) Mørch(Cat. Moll. Spitzb., Pag. 14). Hvorvidt imid- 

 Lertid denne er identisk med Verkriizens Art har jeg ikke 

 lmvt Anledning tilfredsstillende at faa undersøgt. Dr. W'. 

 Lecho (1. c. Pag. 64) holder dem tor Synonymer. 



Fra B. Humphreysianum adskiller den sig ved on 

 grovere Sculptur paa Tophvirvlerne 

 Arten ikke med Sikkerlied kiendt. 



Ddenfor Norge er 



Buccinum Humphreysianum, Bennett. 

 Zool. Journ. I. Pag. 2: is. Pl. 30. 



Forekomst: Station 195. 107 Favne. 



Et ungt dødt, men vel vedlikeholdt Exemplar. 



Prof. Sårs har fundet denne Art i Finmarken, dog 

 kun i smaa, ikke udviklede Exemplarer. 



Ovennævnte Station ligger nær under 71de Bredde- 

 grad, er Artens yderste kjendte Xordgrændse. 



Buccinum hydrophanum, Hancock. 



Tab. III. Fig-. '.'O— 23. 



Buccinum hydrophanum, Hanck. Ann. & Mag. N. H. XVIII, 

 1846, Pag. 325, Pl. V, Fig. 7. 



Forekomst: Stat. 18. 124, 164. 192. 200, 223, 251, 

 267, 326, 338, 357, 363, 366. Fra 30 til 649 Favne 



Den typiske Form er forholdsvis sjelden og forekom 

 kun paa Stat. 251 — 634 Favne og 366 (Magdalenebay, 



Spitsbergen) 60 Favne. 



\ 

 Var. tumidula, Fig. 21. 

 B. tumidulum, Gr. 0. Sårs. 1. c. Pag. 263, Pl. 25, Fig. 5, 6, 



og Var. elata, nob., Fig. 20. 

 er de almindeligste Former og tindes meget talrig sammen 

 paa de middelmaadige Dyb over hele Ishavet. 



Formen elata har et langt uddraget Spir og Mund- 

 aabningen meget kortere end Spiret. 



Var. Mørchi, Kg. 22. 



B. Mørchi, Friele. "Prelim. Pep." Pag. 4. 



Formen konisk, flade Vindinger, violet farvet. 



Denne Varietet synes særlig at høre de større Dyb til 

 og forekom paa Stationerne is. 124. 200, 164 og 192, alt- 

 saa imellem .'<.">" og 650 Favne. 



(Beck) Miirch (Cat. Moll. Spitzb., p. 14); hut whether 

 identical with Verkriizens species. 1 have not had sufficient 

 opportunity of deciding. Dr. W'. Leche (1. c, p. 64) re- 

 gards them as synonyms. 



From /.'. Humphreysianum it is distinguished by the 

 coarser sculpturing ol' the top whorls. Elsewhere than on 

 the coast of Norway, this species has not been recorded 

 with certainty. 



Buccinum Humphreysianum. Bennett. 

 Zool. Journ. I. p. 298, PI. 30. 



Habitat: — Station 195. at a depth of 107 fathoms. 



A young specimen, dead, hut in a good state of pres- 

 ervation. 



Professor GL 0. Sars has met with this species in Fin- 

 mark, but only represented by small and immature examples. 



Station 195 lies but a short distance from the 71st 

 parallel of latitude, which constitutes the extreme northern 

 limit of distribution for this species. 



Buccinum hydrophanum. Hancock. 



PI. III. figs. 20 -23. 



Buccinum hydrophanum, Hanck. Ann. & Mag. N. H. XVIII, 



1846. p. 325. PL V, fig. 7. 



Habitat: — Stats. 18, 124. 164. 192, 200, 223. 251, 

 267, 326, 338, 357. 363, 366; from 30 to 649 fathoms. 



The typical form is comparatively rare; it was met 

 with only at Station 25 L , in 634 fathoms, and at Stat. 366 

 (Magdalena Bay, Spitzbergen), in 60 fathoms. 



Var. tumidula, rig. 21, 

 B. tumidulum, G. O. Sars, 1. c. p. 263, PL 25, figs. 5, 6, 



and Var. elata, nob., fig. 20, 

 are the most frequent forms ; they occur abundantly together 

 at moderate depths throughout the whole of the Arctic Ocean. 

 The form elata has a long, produced spire, than which 

 the aperture is much shorter. 



Var. Mbrchi. tig. 22. 

 B. Mbrchi, Friele. "Prelim. Rep.," p. 4. 

 Form conical, flat whorls, violet-coloured. 

 This variety would appear to occur chiefly in the deeper 

 strata: it was brought up at Stats. 18, 124. 200, L64, and 

 192. from depths varying between 350 and 650 fathoms. 



