south, but not below Banks Peninsula.” (Suter). 
Mount Maunganui. 
EUTHRIA LINEA (eu, well; Thriae, the Parnassian 
nymphs, nurses of Apollo; linea, marked with lines)—A 
fusiform or spindle-shaped spiral univalve, belonging to 
the rapacious Whelk family. It has a strong and thickly- 
built shell of a greyish or yellowish colour, with slightly 
raised dark-brown or black stripes running spirally from 
apex to base. Although not exactly a handsome shell, it 
has a decidedly smart appearance. About one and three- 
quarter inches in length. Found among rocks at low tide. 
North and South Islands. Mount Maunganui. 
EUTHRIA LITTORINOIDES (eu, well; Thriae, Par- 
nassian nymphs, nurses of Apollo; litorina, inhabiting the 
sea-shore ; oidos, like).—This species is a most variable one, 
but may be usually recognised by the fact of the whorls 
of the spire not being so conspicuously defined from each 
other as in the other members of the genus. It is rather 
small, solidly built, fairly round at the periphery of the 
body whorl, of a pale slaty or bluish-grey colour, with 
well-marked narrow purple or black spiral stripes, which 
stand out in very slight relief. It is about an inch in height 
and is found on rocky ground among loose boulders near to 
low-water mark. 
North and South Islands. Makatu; Mount Maunga- 
nui; Chatham and Auckland Islands. 
EUTHRIA MARTENSIANA (ez, well; Thriae, Par- 
nassian nymphs, nurses of Apollo; Martens, the concholo- 
gist)—An elongated, gracefully-shaped, rather thin spiral 
univalve, with the sutures of the spire whorls well defined, 
and the aperture much shorter than the height of the spire. 
The colour is a uniform yellowish brown. It is sculptured 
with a few very fine spiral ridges, almost indistinguishable, 
and numerous axial or vertical rounded ribs from the apex 
to below the middle of the body whorl. The base is con- 
tracted, the outer lip of the aperture thin and sharp. 
Island Bay, Wellington; Dunedin Harbour; Lyttelton 
Harbour; Preservation Inlet; Auckland Islands. 
EUTHRIA VITTATA (cu, well; Thriac, Parnassian 
nymphs, nurses of Apollo; vittata, garlanded, or filleted). 
—A small spindle-shaped univalve about three-quarters of 
an inch in length, of a pale yellowish-brown or greyish- 
white colour, with a broad band of dark purple on the 
whorls of the spire, and two on the body whorl. The three 
63 
Plate V 
No. 27 
Plate V 
No. 28 
Plate V 
No. 26 
Plate V 
No. 29 
Sea Shells 
of New Zealand 
