GENUSBUCCINUM. 27 



cavity ; the emargination is very oblique, accompanied exter- 

 nally by a thick, rounded, and twisted varix, which, revolving 

 around the axis, terminates below the folds of the columella ; 

 this is slightly arcuated ; one or two oblique folds are delineat- 

 ed at its base. 



Length 1 inch 9 lines. Width 9 lines. 



Inhabits the Indian Ocean, the coasts of the Island of Am- 

 boyna, the Moluccas, and New Holland. 



Lamarck had also separated this shell from the BUCCINUM of 

 Linnaeus, to place it in his genus CANCELLARIA, under the name of 

 CANCELLARIA senticosa. The folds which exist at the base of the 

 columella, and the asperities which cover the entire surface of 

 the shell, induced him to place it in this manner ; but the folds 

 are always more numerous and more prominent in the genus 

 where he arranged this species. Lately M. Quoy has made 

 known, in his beautiful work, the organization of the animal, 

 and he has accurately marked out the place which the shell 

 should occupy, by placing it anew in the genus BUCCINUM, to 

 which it belongs. 



This shell is very remarkable for its form, and particularly 

 for the asperities which we have described. Lamarck points 

 out a variety of this species under the letter B ; but the diffe- 

 rences which he remarked, were produced only by the greater 

 freshness of the specimen which he had observed. 



28. BUCCINUM TIGRINUM, NOBIS. The Tiger Buccinum. 



(Collect. MASS.) 



PI. X, fig. 32. 



B. testa ovata, elongata, subturricula, fulvescente ; spira conica, acuta, 

 plicis rotundatis transversis cincta, longitudinaliter maculis spadiceis et 

 fusco-albidis , anfractibus convexiusculis ; apertura alba, ovatA, elongata ; 

 columellii crassa, alba ; labro dextro tenui. 



Shell ovate, elongated, subturreted, generally of a clear 

 fawn color, marked with numerous spots of a deep chestnut 



