FUSUS. 343 



Aberdeenshire (Bell, fide Dawson) . Mr. Barlee pro- 

 cured the variety from the outer haaf or fishing-banks 

 on the east of Shetland ; and I dredged it there in fine 

 sand, at depths of 78-100 f., with F. Norvegicus and 

 Buccinopsis Dalei. It is a rare species. Norway (Rasch, 

 fide Loven, as Tritonium Islandicum] ; Vadso, 140 f. 

 (Danielssen) ; Loffoden Isles and Christiansund (Sars) . 

 The last-named author likewise gives the north coast of 

 Russia and north-west America, but without citing any 

 authority. 



The young, when fresh caught and living, look like 

 tiny rose-buds. The colour of full-grown specimens 

 (especially of the inside) is not less beautiful ; these may 

 vie with 



" the dappled shells, 



That drink the wave with such a rosy mouth." 



"TYi-fono^u^Su^ u*5i |W^ i 9 ( fcroAje-rvl} 



k'.5o6 9. F. FENESTRA'TUS*, Turton. |^ -tl 



F. fenestratus, Turt. in Mag. N. H. vii. p. 351. Buccinum fustforme, 

 F. & H. iii. p. 412, pi. ex. f. 2, 3. 



BODY uniform white, or yellowish-white with the exception 

 of the branchial tube, the upper or convex surface of which 

 is deep grey with rather close-set black transverse streaks, its 

 extremity being white : head narrow : tentacles rather short 

 and pointed : eyes on the outer side of the tentacles, at about 

 one-fourth of their length: foot large, truncated in front, 

 acute-angled on every side. (Sars.) 



SHELL having a short base and long spire, rather thin, semi- 

 transparent, lustreless: sculpture, curved longitudinal ribs, 

 which do not extend to the lower part of the body- whorl ; there 

 are from 20 to 25 on that whorl, 18 on each of the next two, 

 and 12-15 on each of the next two whorls, where they 

 cease ; the whole of the shell is encircled by thread-like spiral 

 ridges or striae, of which there are from 18 to 20 on the body- 

 whorl, 8 on each of the next two, 6 on each of the next two, 

 and 4 on the next whorl, the top whorl being smooth and 



* Latticed, like a window. 



