50 
3. On THE ANIMAL or LiIoTIA; WITH DESCRIPTIONS OF NEW 
SPECIES OF DELPHINULA AND LIOTIA, FROM THE CUMING- 
1AN CotuecTion. By Artour Apams, R.N., F.L.S. etc. 
(Mollusca, Pl. VIII. fig. 18, 19, 20.) 
An examination of the animal of Liotia Peronii tends to confirm 
the generic importance of a small group hitherto confounded with _ 
Cyclostrema and Delphinula, but which had been justly recognised 
by Mr. Gray under the name of Liotia. The shell is known by its 
thickened peritreme ; the operculum is peculiar, and the habits are 
peculiar in living at considerable depths, while Delphinula proper are 
chiefly littoral. In Liotia the head is proboscidiform, the tentacles 
subulate, the eyes on conspicuous peduncles at their outer bases ; 
there are no intertentacular lobes, but a conical lobe on each side of 
the head external to the eye-peduncles ; the lateral membrane of the 
foot is undulated, and furnished posteriorly with three cirrhi. 
The operculum is arctispiral, the volutions being very narrow, nu- 
merous, and covered with a calcareous deposit, which is articulated 
at regular intervals, giving the upper surface of the operculum a tes- 
sellated appearance ; the periphery is ornamented with radiating, 
horny fibres. 
LioTIA PULCHERRIMA, Adams. L. testd subdiscoided; spird ele- 
vatiusculd, anfractibus rotundatis, liris transversis et longitu- 
dinalibus elegantissimé cancellatd, liris transversis muricatis ; 
labro expanso, duplicati, radiatim fimbriato ; umbilico per- 
amplo, crenulato. 
Hab. apud Promontorium Bone Spei. (Mollusca, Pl. VIII. fig. 21.) 
Shell subdiscoid ; spire slightly elevated, whorls rounded, very ele- 
gantly cancellated with transverse and longitudinal raised ridges, the 
transverse being muricated ; outer lip expanded, with a double peri- 
treme, each being radiately fimbriated; umbilicus very large, the 
margins crenulated. 
Hab. Cape of Good Hope. (Mus. Cuming.) 
Liotia Arrinis, Adams. JL. testd globosd; spird subprominuld, 
anfractibus rotundatis, transversim elevato-striatis, costis vari- 
ciformibus longitudinalibus, distantibus, angulatis, mucronatis ; 
anfractuum parte inferiori serie unicd foraminum ; labro ex- 
panso ; umbilico patulo, crenulato. 
Hab. in littoribus Australie. 
Shell globose ; spire rather prominent, whorls rounded, transversely 
elevately striated, with variciform longitudinal ribs, wide apart, angu- 
lated, and with the angles furnished with sharp points ; lower part of 
the whorls with a single row of holes ; outer lip expanded ; umbilicus 
wide, crenulated. 
Hab. Australia. (Mus. Cuming.) 
A species partaking of the characters of L. scalarioides and L. va- 
ricosa of Reeve, but which can be referred to neither. 
