502 TROCHID^. 



confined to our southern shores and the Irish sea. Herm, 

 in the Channel Islands ; Weymouth and Brixham (S. H.) ; 

 in fifteen fathoms, west hay of Portland (M' Andrew and 

 E. F.) ; Exmouth (Clark), Plymouth, Falmouth, White- 

 sand Bay (Jeffreys), Fowey (Peach) ; north-west coast of 

 Isle of Man in twenty-five fathoms, on a scallop beach, 

 not rare (E. F.) ; Dublin coast (Warren), Wicklow 

 (Farren), Youghall (Ball), coast of Cork (Humphreys). 



It does not occur to the north of Britain, but south- 

 wards ranges to the Mediterranean. Its history as a fossil 

 is doubtful. 



T. MILLEGBANUS, Philippi. 



Conical, either whitish, or only articulated with pink on the 

 raised sculpture; whorls with numerous cordlike raised striae, 

 and a strong inferior marginal belt : apex not coloured ; base 

 flattened, imperforated. 



Plate LX VI. fig. 9, 10. 



!> landi,GRAY, in Wood's Index Testae. Suppl. pi. 5, Troch. f. 15(1828). 

 „ millegranus, Philippi, Moll. Sicil. vol. i. p. 183, pi. 10, f. 2.5 ; vol. ii. 



p. 1.54 (fossil). — Thompson, Ann. Nat. Hist. vol. v. 



p. 24.5. — IIani.ky, Brit. Marine Conch, p. xxxix. f. 36. — 



Lovkn, Index Moll. Scandinav. p. 20. 

 „ Martini, Smith, Mem. Werner. Soc. vol. viii. p. 99, pi. 1, f. 26. — 



Macgil. Moll. Aberd. pp. 132, 349.— Brit. Marine Conch. 



p. 1G4.— Brown, 111. Conch. G. B. p. 129. pi. 57, f. 11. 



This pretty Trochus has a simple conical figure, but 

 varies in the relative proportions of height and base ; its 

 lateral outline is rectilinear, its apex acute, and its base 

 flattened and imperforate. It is opaque, or nearly so, 

 tolerably strong, more or less dull-surfaced, and of a 

 white or yellowish-wdiite hue, that is either uniform or else 

 distantly articulated with madder-lake upon its spiral 

 sculpture. The elongation of the whorls, which are 

 seven or eight in number, is gradual; they are flat or 



