38 MARSHALL : ON THE BRITISH SPECIES OF BUCCINUM. FUSUS, ETC. 



sequence of such a reversal in the position of its organs is probably 

 not very important to its economy." (') I do ncjt know how Gwyn 

 Jeffreys came to regard the lungs as being on one side only of the 

 body, for as a matter of fact one lung is on the right and another on 

 the left side, and in a sinistral specimen the right and left lungs 

 would presumably be simply transposed. 



B. HUMPHREYSiANUM, Pcnn. — S. W. Ireland, 80 f. (R.I. A. cruise); 

 the Minch off Loch Boisdale, 72 f., a very young specimen (J. T. M.) ; 

 between the Butt of Lewis and St Kilda. (Simpson) I 



Var. venfriccmiiii, Kien. (Journ. Conch., 1893, vol. vii, p. 261.) — 

 South of Ireland (R. I. A. cruise). Gwyn Jeffreys records in " British 

 Conchology " a var. larfcuin^ l)ut without locality ; that locality should 

 be "Shetlands." A pretty variety, also from the Shetlands, has a white 

 zone below the suture of each whorl, as well as on the outer lip. This 

 species can scarcely be mistaken for B. umlafurn rar. zeflandica ; it 

 has no palpable epidermis at any stage of growth, the aperture is 

 reflected outwards, and the embryo is different. Sowerby's is the 

 better figure, but the apical whorls are incorrect ; they should be as 

 Jeffreys'. 



The B. hyilrophanuin of Hancock, was dredged by the "Triton" in 

 the Shetland-Faroe Channel, and the same species, with U. iiK'hrhi, 

 Friele, by the " Knight Errant " in the same district. 



BucciNOPSis DALEi, J. Sow. — Atlantic off Ireland 345 f (R. I. A. 

 cruise); west of St. Kilda 100 f. (Hoyle) ; Aberdeenshire, 40 miles 

 off Rattray Head ; (Kelly) ! Buchan Deeps, 70 miles east ofAberdeen. 

 (Simpson) ! 



There is considerable difference between the shells of the male 

 and female of this species, the former being oblong and the latter 

 oval. Sowerby's figure well illustrates the female form, and Jeffreys' 

 (jeneric figure the male, though the latter has the whorls too convex 

 and the operculum is wrongl)' shaped. Jeffreys' iilafr figure is much 

 too broad, and it should not l)e spirally striated nor haxe such a broad 

 glaze on the pillar. 



Gwyn Jeffreys recorded a Buccinopsis .striata in the " Depths of 

 the Sea," which he vaguely assigned as "another interesting addition 

 to the Shetland fauna." 



Triton cutaceus L. — A very fine living specimen, dredged by 

 me off St. Martin's Point, Guernsey, in 22 fathoms, in 1885, exceeds the 

 dimensions given by Jeffreys. This is the only example that has 

 been obtained alive in recent years. Nor has any addition been made 



(i) Brit. Conch., vol. i, Introduction, p.xxi. 



