TROCHUS. 327 



wall (Hockin); Scilly Isles (Lord Vernon). This species 

 has been found by me fossil at Fort William, and by 

 S. Wood in the Coralline Crag; Antibes (Mace); Sicily 

 (Philippi) . It is Swedish and Norwegian (with a range 

 of from 15 to 50 f.); but the extent of its distribution 

 south of Great Britain is not well ascertained. M^An- 

 drew has taken it oft* Lisbon in 7-12 f., and between 

 Cadiz and Cape Trafalgar in 30 f. ; Gay obtained it at 

 Toulon ; and Forbes dredged it in the ^gean, from 41 

 to 110 f. All the southern specimens that I have seen 

 belong to the variety. 



It is rather plentiful in the west of Scotland, but 

 apparently not so much at home elsewhere. If it had 

 not been for the far and wide researches of my friend 

 Mr. M'^Andi'ew, our knowledge of the geographical dis- 

 tribution of this species would be very scanty. His 

 experience, as a dredger, surpasses that of the Shipman 

 (in the ' Canterbury Tales ') as a mariner, who had ex- 

 plored what was then reckoned the greater part of the 

 European seas — 



" Fro Scotland to the Cape of Fynystere, 

 And every creek in Brittain and in Spain." 



The fry of T. millegranus has an umbilical perforation. 



This is probably the T. miliaris of Brocchi, and cer- 

 tainly T. Clelandi of W. Wood, T. Martini of Smith, 

 my T, elegans, and T. Clelandiana of Leach. 



14. T. granula'tus^. Born. 



T. granulahis, Born, Ind. Mus. Caes. Vind. p. 343 ; F. & H. ii. p. 499, 

 pi. Ixvii. f. 7, pi. Ixviii. f. 3, and (animal) pi. D D. f. 4. 



BoPY pale yellowish or whitish, speckled with reddish- 

 brown : mantle-lappets very large, white, pendent, and slightly 

 scalloped : head strong and thick, finely fringed at the ex- 



* Granulated, 



