FAMILY 11. COLUMELLATA. 245 
The shell of Terebra may be described as being very elongated and tur- 
riculated, slightly canaliculated at the base, and composed of a number 
of scarcely convex whorls forming a narrow lengthened spire, which is 
very sharp at the apex ; the aperture is small, somewhat oblong, and an- 
gulated at the upper part ; the columella is swollen, twisted, and termi- 
nated with a point; and the outer lip is thin, simple, and acute. The 
operculum is horny, and not spiral. 
Examples. 
Pil. CCLXXIV. Fig. 1. 
TEREBRA ORNATA, Gray, Proceedings Zool. Soc., 1834, p. 62. 
Pl. CCLXXIV. Fig. 2. 
TEREBRA PRETIOSA*, Nobis, Proceedings Zool. Soc., 1842. 
Pl. CCLXXIV. Fig. 3. 
TEREBRA STRIGATA, Sowerby, Appendix Tankerville Catalogue, p. xxiii. 
Buccinum elongatum, Wood. 
Terebra zebrat, Kiener. 
Pl. CCLXXV. Fig. 1. 
TEREBRA SUBULATA, Lamarck, Anim. sans vert., vol. vil. p. 286. Kiener, 
Iconographie des Coquilles vivantes, pl. 4. f. 6. 
Family 11. COLUMELLATA. 
Testa ad basem emarginata, columella valdé plicata; plicis obliquis, in- 
fimis interdum minimis, interdum maximis. 
* We gladly adopt the very appropriate title of pretiosa, proposed by the Rev. Mr. Stain- 
forth, for this unique shell, one of the chief ornaments of his collection. 
+ Why has M. Kiener imposed a new title upon this species, when he admits, in a note 
immediately following his description, that it had been already named and described ? 
VOL. II. aK 
