FAMILY 10. PURPURIFERA. 229 
Buccinum olearium, Linneus. 
Dolium cepa, Martini. 
Pl. CCLXIV. Fig. 2. 
DotiuM FiMBRIATUM, Sowerby, Genera of Shells, No. 29. 
TRICHOTROPIS, Broderip and Sowerby. 
Testa tenuis, turbinata, epidermide cornea induta, spira elata, anfractibus 
seepissimeé carinatis ; epidermide super carinas setosa, setis regulari- 
bus, erectis ; anfractu ultimo, ad basem leviter canaliculato, umbili- 
cum plus minusve amplum formante; apertura subtrigono-ovata, 
spire longitudinem, nisi superante, equante; columella arcuata, in 
mucronem, subobliqué truncatum, desinente ; labro tenuissimo, 
acuto. Operculum parvum, corneum, nucleo laterali, lamellis el- 
lipticis confertum. 
The remarkable shell which has received the above generic title at the 
hands of Broderip and Sowerby, was originally described by the latter as 
a new species of Turbo in his ‘ Appendix to the Tankerville Catalogue.’ 
Upon the subsequent arrival of a specimen with its animal inhabitant *, 
it was thought to be in great measure allied to the Buccina ; we cannot 
think, however, that the anatomy of this rare mollusk has been as yet 
sufficiently understood to determine its true affinities. After making a 
careful examination of the shell as regards its texture, composition, &c., 
we are much inclined to think that it does not exactly belong to this part 
of the system, and we place it provisionally with the Purpurifera, purely 
* The specimen here mentioned was brought from Iey Cape by Captain Belcher, R.N., who 
has just returned from another rambling voyage of more than ten years in the most remote 
quarters of the globe. “‘ His argosy is richly come to harbour,” and we only hope that the 
scientific world will (under favour of the Admiralty) receive the full benefit of his very me- 
ritorious exertions. 
