buccixum. 287 



Upper part of each whorl encircled by a keel or more promi- 

 nent spiral ridge. (B. carina turn. Turton, Conch. Diet. p. 13, 

 pi. xxvi. f. 94.) 3. imperiale. Body-whorl compressed and 

 elongated, so as to give it the shape of a VoJuta. (B. imperiale, 

 Reeve, Conch. Icon. iii. pi. ii. f. 8.) 4. acuminatum. Spire 

 extending to a considerable length ; whorls flattened, and the 

 periphery consequently angulated. {B, acuminatum, Broderip 

 in Zool. Journ. v. p. 44, pi. iii. f. 1, 2.) 5. conico-opercutatum. 

 Operculum patelliform or conical. 6. bioperculatum and tri- 

 operculatum. Having two or three opercula. 



Habitat : Every kind of ground, in all parts of the 

 British seas, from the shore to the greatest known 

 depth. The 1st variety is peculiar to hard ground in 

 the coralline zone, throughout the Hebrides, Orkneys, 

 and Shetland ; it is not common. 2nd, among stones 

 and on mud, in the higher part of the laminarian zone, 

 north of England, as well as Ireland, Scotland, and 

 Shetland. 3rd, brackish water at Southampton and 

 Ipswich. 4th, coralline zone of England, Wales, and 

 Ireland; not common. 5th, Dogger bank; Mr. Leckenby 

 has a specimen 6y inches long. 6th, soft ground in the 

 deep-water zone, west of Ireland, outer Hebrides, Ork- 

 neys, and Shetland; I have a specimen of a pure white 

 colour. Besides these, which I regard as the principal 

 varieties, others have been described by Professor Kinc 

 and Mr. A. Hancock. In horticultural language, the 

 species is very much given to sporting. The monstrosities 

 have been noticed in the following places : — 1, coasts of 

 Kent, Sussex, Lincolnshire, and Yorkshire ; it is the B. 

 Bornianum &c. of Chemnitz. I have both solid and thin 

 specimens of this monstrosity. 2, with the last, and at 

 Exmouth, Sunderland, and in the west and south of 

 Ireland ; not B. carinatum of Phipps, which is B. gla- 

 ciate. 3, Kent and Sussex. 4, the same, and in various 

 other places, as far north as Aberdeen (Macgillivrav) ; 

 this was mistaken by Turton for B. glaciate ; the upper 



