ve! 
`a new Species of Anculotus. 185 
ANcULOTUS DENTATUS. 
Plate IV. fig. 7. 
A. testa rotundatà, vel sub-conica, Sarika. liy 
anfractibus quinque, ultimo magno, ven ntricoso, 'sæpè fasciis duobus 
aut tribus badiis cincto; suturis im cime pir obtusá ' plerumque 
erosi;  aperturà. erosà, basi efomp: Walle "y 5 Gand: apte, 
GLUCBUCIW 
Operculo corneo, unguiculato. 
Description. Animal, much like that of Melania ; 
foot broad, short, rounded and thick, body and head 
black, the latter sub-orbicular, terminating in a short, 
proboscidiform mouth, and furnished with two short, 
rather stout and pointed tentacula, black posteriorly and 
with faint greyish, transverse bands on their anterior 
side ; eyes minute, situate on a slight enlargement of the 
tentacula near their external base. Operculum elon- 
gated, unguiform, thick, corneous, blackish or brown, 
opaque, spire terminal, increment ‘coarse and apparent. 
Shell, rounded or obtusely conical, sub-diaphanous, 
very irregular in its conformation, frequently gibbous 
and distorted ; the color varies from light olive-green to 
black, according to the age of the specimens ; whorls 
five or six in number, the last constituting the greater 
portion of the shell, very much inflated or ventricose, 
and sometimes ornamented with two or three dark 
brown, transverse bands ; spire obtuse, always consid- 
erably eroded, unless in very young shells ; incremental 
striæ oblique, in some individuals barely apparent, and 
in others forming strong ridges on the last whorl; aper- 
ture rounded, effuse at the base, right lip thin, sharp and 
broadly everted ; columella dark brown or purple, flat- 
tened, strongly arcuated, with a dentiform projection 
* 
