AURICULID. 33 
Length, ‘44 ; breath, :2.—( Pfeiffer. ) 
New Zealand (Cuming.) 
M. zealandicus, Adams ; lc, p. 12; Pfeiffer, lc, p. 17. Shell 
rimate, conoidally ovate, rather solid, irregularly striated, slightly 
shining, horn coloured brownish: spire conoidal, acutely mucronate ; 
suture linear ; whorls nine, flat, the last forming, about two-thirds of 
the total length, rather swollen above, somewhat lessened towards the 
base, with a swollen tubercule ; aperture perpendicular, narrowly semi- 
ovate, rounded in front ; one middle-sized, rather transverse plait on 
the last whorl ; columella plait obliquely produced to the margin ; 
peristome acute, bordered with brown ; right margin furnished with a 
white callus, “aie sends off eight or nine short ridges; columella 
margin slighty thickened. 
Length, -35; breadth, -2—( Pfeiffer.) 
New Zealand (Cuming.) Auckland. 
Genus, TRALIA—Gray. 
Foot posteriorly acute, entire. Shell ovate, smooth ; spire elevated ; 
aperture narrow, dilated anteriorly : inner lip usually with three oblique 
plaits ; outer lip acute, sinuated posteriorly ; ely with one or 
more transverse elevated ridges. 
T. costellaris, Adams, 1.c., p. 12; Pfeiffer, Lc. p. 393; Auricula 
sealandie, Ltector, Cat. Col. Mus., ESTO, £1198 ( name only.) Shell 
rimate, ovato-conic, solid, ribbed longitudinally, brown, with irregular 
pale streaks ; spire conic, blunt ; suture irregularly impressed ; ; whorls 
five or six, the upper ones flat or rather excavated, the last forming 
about four-sevenths of the total length, very obsoletely angled, and 
girdled with a pale line at its upper circumference, somewhat tubercu- 
late at the base; aperture nearly perpendicular, sinuately ovate ; parietal 
plait one, strong, deep, rather transverse; columella plait a little smaller, 
produced externally ; peristome blunt; mght margin sinuated above, 
then thickened by an internal deposit ; columellar margin dilated, 
rather adnate. 
Length, -47 ; breadth, -26.—( Pfeifer. ) 
New Zealand (Strange.) Auckland. 
T. adamsianus, Pfeiffer, Cat. Auric., Brit. Mus. p. 17. Shell 
sub-rimate, ovato-oblong, rather solid, smooth, blackish green; spire 
convexly conical, pointed ; suture linear « ori nine, flat, the upper 
ones somewhat plaited, the last forming two-thirds of ine fora length, 
indistinctly angled above, marked near the suture with one larger and 
several narrow pale bands, regularly sculptured with striw of growth, 
rounded in front ; aperture nearly perpendicular, narrowly semi-ovate ; 
one middle- sized, compressed, transverse plait on the last whorl ; 
columella plait oblique, produced outwards; peristome straight, 
bordered with white; rnght margin sinuate above, furnished within 
with six or seven short white ndges ; columella margin callous, slightly 
dilated. 
