30 
SURCULA CHEESEMANI (Plate VII.).—Figs. 15 and 16 
(late Pleurotoma) is a shell varying from pale pink to brown 
in colour. Interior rose or purple. The spire end is usually 
smooth. It is found in Auckland, and is about one inch in length. 
SOLIDULA ALBA (Plate VII.).—Fig. 14 (late Buccinulus 
kirki) is a whitish shell, found in the North of Auckland. Its 
extreme length is ? inch. 
POTAMIDES SUB-CARINATUS (Plate VII.).—Fig. 13 
(late Cerithidea subcarinata) is a dull black shell seldom over 
half an inch long. The colour is usually concealed by the reddish- 
brown epidermis. The interior is dark purple. 
POTAMIDES BICARINATUS (Plate VII.).—Fig. 19 (late 
Cerithidea bicarinatus) is a reddish-brown or purple shell, covered 
with a blue or brown epidermis. The interior is purple. It is 
found in the North Island in large numbers on banks of sand 
mixed with mud near high water mark. Its extreme length is one 
inch. 
SCALARIA ZELEBORI (Plate VII.).—Fig. 17 is the New 
Zealand representative of the Wentletrap family. It is a pure 
white shell, sometimes over an inch in length. The numerous ribs 
across the whorls are very prominent, and look like the steps of 
a ladder, whence it derives its name. It lives in the ocean below 
low water mark, and I have dredged it up with the Ethalia 
zelandica (Plate VI., Fig. 7). The Maori name is Totoro. 
SCALARIA TENELLA (Plate VII.).—Fig. 18 is a dirty 
yellow, almost transparent, shell about a-third of an inch long. 
There is usually a pale brown band near the centre of the whorl. 
Found about half-tide mark in sheltered water. 
TEREBRA TRISTIS (Plate VII.).—Fig. 20 is a bluish or 
blue-grey shell, slightly over half an inch in length. The interior 
is brownish-white, with a yellow band in the centre of the whorl. 
The varices on the exterior are not so prominent as in the Pota- 
mides (Fig. 13). 
TENAGODES WELDII (Plate VII.).—Fig. 21 (late Suili- 
quaria australis) is a small white shell, not more than one inch 
long. It is found in Hauraki Gulf. 
TROPHON DUODECIMUS (Plate VII.).—Fig. 22 (late 
Kalydon duodecimus) is a pale yellow shell, usually covered with 
