EBURNA. 109 



tentacles, in others near their middle, and are sometimes 

 wanting; the aperture of the shell is either truncate, or with 

 a short recurved canal, and the inner lip is usually callous 

 and spreading over the last whorl. 



Genus EBURNA, Lamarck. 



Head long and flat ; eyes on swellings at the base of the 

 tentacles. Foot narrow, elongate. 



Shell ovate-oblong, deeply umbihcated ; spire acumi- 

 nated, whorls more or less convex, suture more or less chan- 

 nelled ; aperture oval ; columella arcuated, posteriorly cal- 

 lous ; inner lip spreading, often covering the umbilicus in 

 the adult ; outer lip simple, acute. 



Syn. Latrunculus, Gray. Nassa, a, Sclium, Babylonia, 

 Sddut. 



Ex. E. spirata, Linnam, pi. 11, fig. 5. Operculum, E., 

 canaliculata, Schumacher., fig. 5, a, 5, h. Shell, E. canali- 

 culata, fig. 5, c. 



The Ehurn(E are solid, smooth shells, spotted with dark 

 red; they are found in the Red Sea, India, the Cape, 

 Japan, China, and Australia ; when fresh they are covered 

 with a very thin, brown, horny epidermis. 



Sjjecies of Eburna. 



ambulacrum, Sow. Molliana, Ckem. 



canaliculata, Schum. papillaris, Soiv. 



Japonica, Eeeve. spirata, Linn. 



maculosa, Bolt. Valentiana, Swains. 



