Hurron.—On the New Zealand Siphonariide. . 148 
This species is closely allied to S. diemenensis, Quoy and Gaimard, and 
may prove to be a variety of it; in which ease I would ask Australian 
conchologists to retain our name, as the more appropriate. Further notes 
on its anatomy and development will be found in the Annals of Natural 
History for 1882. 
SipHONARIA ZEALANDICA, Pl, XVII., figs. m to m. 
Siphonaria zealandica, Quoy and Gaimard, Voy. Astrolabe, Zoologie ii., p. 344, 
pl. 25, fig. 17-18 (1833). | 
Shell ovate-oblong, depressed with numerous rounded ribs, of which 
about fourteen are usually much larger than the others, two of these close í 
together form the siphonal groove, and are separated by a considerable 
space from the other larger ribs. Apex obtuse, submedian. Exterior ash- 
brown, the ribs sometimes lighter ; interior liver-brown, the apex often 
yellowish, a narrow marginal line, or often only the tips of the projecting 
ribs, yellowish. Length °75 ; breadth *6; height -15 to *2 inch. 
Dentition, oS Jaw like that of S, australis, Central tooth 
narrow, its length three times the breadth at the base.  Laterals about 
thirteen, the cutting-point bidentate, and a small cutting-point on the out- 
side; marginals with three cutting-points, the median the largest, and 
bidentate on the inner marginals, simple and rounded on the outer ones. 
Animal like S. australis, but the ovotestis is pale yellow. 
Hab. Auckland, Nelson, and Wellington ; comparatively rare and very 
small at Banks’ Peninsula, which is the most southern locality at which I 
have found it. Chatham Islands (?). 
This species is usually easily recognized from the last by its large pro- 
jecting ribs, but sometimes the shells cannot be distinguished, and the bi- 
dentate cutting-points of the tecth is the only reliable character. S. inculta, 
Gould, is probably the same, but I have not seen the figure. Reeve has 
identified S. zealandica with S. sipho, Sowb., found in the Indian Archi- 
pelago ; perhaps he is right, but until the dentition of S. sipho is known it 
will be better I think to keep the two separate. 
SIPHONARIA REDIMIcULUM. Plate XVII., figs. N. to R. 
Siphonaria redimiculum, Reeve, Conchologia Iconica, Siphonaria, fig. 24. 
Shell ovate-oblong, depressed, rather thin, with about twenty-five dis- 
tant undulating ribs; apex posterior, uncinate, bent to the left; exterior 
uniform reddish-brown ; interior dark purple, lighter under the apex. 
Length -8—9; breadth :65; height ‘2. 
Dentition, 155. Jaw arcuate, tapering to each end; surface covered 
with minute papille. Central tooth very narrow, its length being four times 
the breadth. Laterals about twenty, the cutting-point bidendate and con-. 
tinued down on each side of the cusp ; interior marginals with two cutting- 
