244 CLASS III]. GASTEROPODA. ORDER VII. PECTINIBRANCHIATA. 
Pl. CCLXXIII. Fig. 4. (fossil). 
Ouiva cLavuta, Lamarck, Anim. sans vert., vol. vil. p. 440. 
TEREBRA, Bruguiere. 
Testa elongata, turriculata, ad basem leviter canaliculata, anfractibus 
numerosis, parm convexis, apice acutissimo, elato ; apertura parva, 
suboblonga, superné angulata ; columella tumida, contorta, mucrone 
terminata; labro externo, simplici, tenui, acuto. Operculum cor- 
neum, non spirale. 
The formation of the genus Terebra appears to have been for the most 
part attributed to Adanson; but as it was conceived by that author in 
error, his successor Bruguiére has been sometimes signalised as the 
founder of it. The Fusus Nifat, for example, constituted one of the 
Terebre of Adanson ; indeed, of the species enumerated by that writer, 
so useful in his day, only two were selected by Bruguiére as presenting 
the typical and proper characteristics of a new genus. 
The shells of the Terebrz scarcely differ from those of the Buccina, 
except in their slender turriculated growth ; there is, indeed, a nume- 
rous and interesting series approximating so closely to them in their 
generic characters, that it is difficult to determine on which side to place 
them, De Blainville at one time proposed to reserve these intermediate 
varieties of form to the genus under consideration ; and he referred such 
as we now look upon as most typical, to a new genus, with the title of 
Subula. A similar arrangement has also been promulgated by Gray, but 
with this difference ; he refers the subulate species to the genus Terebra, 
and the buccinoid species, including some of the Lamarckian Buccina, are 
associated under the new generic title of Bullia*. 
* The word Bullia has been changed by Gray, in his references to ‘The figures of Mol- 
luscous Animals,’ executed by his kind-hearted and accomplished lady, to Budliana ; and Pollia 
is changed in like manner to Polliana. 
