ea Shells 
sf New Zealand 
Plate VIII 
No. 18 
Plate VI 
No. 19 
Plate V 
No. 16 
The surface is very smooth and glossy; the sculpture con- 
sists of a spiral groove at the upper part of each whorl, 
and a second one at the lower part; while there are quite 
a number of grooves at the base, beginning just below the 
widest part. At the outer lip is a well-marked notch, 
typical of the genus. 
Bay of Islands; Takapuna; Mount Maunganui; Lyt- 
telton; Chatham Islands. 
MANGILIA SINCLAIRI (mangana, a wine cask; Sin- 
clair, the naturalist) —A small spiral shell of about three- 
fifths of an inch in length or a trifle more. The spire is tur- 
retted to a slight extent, and the colouring is of a neutral 
tint with a broad spiral band of pale yellowish brown. The 
outstanding feature of the shell is the axial or longitudinal 
ribbing, which is most conspicuous. It extends down al- 
most to the base, where the ribs are crossed by a few well- 
marked smaller ribs. At the upper part of the outer lip 
is a slight rounded notch, and at the lower part of the 
aperture is a very short open canal, The inner lip is very 
narrow. Found under boulders near low-water mark. 
Throughout New Zealand. Mount Maunganui; Bay 
of Islands; Chatham Island. 
TEREBRA TRISTIS (terebra, an awl; tristis, sad-col- 
oured)—A small, finely-pointed spiral univalve of about 
seven-tenths of an inch in length. It is chocolate, light 
brown, or bluish grey in colour, with a light yellow band 
above the suture and on the body whorl just below its 
widest part. The sculpture consists of numerous axial or 
longitudinal ribs, separated by spaces of about the same 
width; there are from sixteen to eighteen of these ribs on 
the body whorl. The canal at the lower part of the aper- 
ture is widely open and slightly notched at the base. 
Throughout New Zealand. Whangarei; Hauraki Gulf; 
Mount Maunganui; Banks Peninsula. 
BULLINA SCABRA (builina, a small bubble; scabra, 
rough).—A rare spiral univalve, ovoid in shape; or, as 
Suter plainly puts it, obese. It is small, with a very short 
spire, a large body whorl, and an aperture about two-thirds 
the height of the entire shell. The sculpture consists of 
small flat and numerous spiral ribs separated by fine 
grooves. The colouring, however, is the most noticeable 
feature of the shell. It is pure white, with thin crimson 
lines, two spirals, rather wide apart, on the body whorl, 
with longitudinal lines crossing them at right angles, and 
dividing the surface into squares, reminding one of paral- 
lels of latitude and meridians of longitude on a globe, 
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