SILIQUARIID. 85 
ing. Shell irregularly twisted, tubular, attached, often regularly spiral 
when young ; aperture round.* 
* Vernetus cariniferus, Gray, Dieff., N.Z., 1.,p. 242, and Zoology of the Voyage 
of the Erebus and Terror, Moll., pl. 1, f. 23, is an Annelid. 
Genus, SIPHONIUM—Browne. 
Operculum large, smooth, circular, concave ; scar central, rugose. 
Shell usually fixed, tubular, whorls often carinated, irregular and tortuous ; 
aperture round, peritreme acute, continuous. 
S. lamellosum, Hutton; C.M.M., p. 30. Shell thick, irregularly 
twisted, with numerous imbricating transverse ridges, which are often 
reflexed ; mouth round, operculum hemispherical; white, sometimes 
tinged with pale violet. Diameter of mouth, ‘2. 
Forms large masses not attached to other bodies. Deep water. 
Genus, CLADOPODA—Gray. 
Foot elongate, front end simple, hinder extremity oblong, clavate, or 
sub-truncate. Operculum none. Shell tubular, irregularly sub-spirally 
twisted, whorls disunited ; aperture round, peritreme acute, continuous. 
C. zealandica, Quwoy, Zc, ili, p. 293, pl. 67, f. 16-17; Morch, 
P.Z.S., 1862, ~. 82. Shell white or brownish, lightly longitudinally 
striated ; animal, with the head blackish with red spots ; margin pale 
yellow ; foot spotted with red ; the head is yeliowish behind, brown and 
dotted with red in front; the foot yellowish with red spots ; the mantle 
is broadly bordered with bright orange. (Quoy). 
Bay of Islands. . 
Genus, STEPHOPOMA—Morch. 
Shell fixed in the adult, contorted, solitary or agglomerated ; aperture 
lightly inflexed above, obsoletely effuse below ; lines of growth bi-arcuate, 
bent back ; operculum closely spiral, below convex, above concave, set 
long, multifid, protected ; animal viviparious. . 
S. roseum, Quwoy, Zc. ill., ~. 300, pl. 67, f 20-24, Morch, P.Z.S., 
1861, g. 150. Shell small, spirally extended, cylindrical, rugose, pink. 
(Quoy). 
Length, 6 to 8 lines. 
Foot long and cylindrical. Body black, with yellowish tints. (Quoy). 
FAMILY—SILIQUARIID. 
Like Vermetide, but the mantle and shell with a longitudinal slit ; 
operculum many-whorled. 
Genus, SILIQUARIA—Brug. 
Operculum fringed ; foot end truncate, circular; shell glassy internally. 
