914 "Transactions.— Zoology. 
Hab. Ocean Beach, Dunedin. 
The dentition of this animal differs so much from that of F. lineata, and 
that of E. littorinoides, that I am obliged to make it into a distinct species. 
CERITHIDEA TRICARINATA, N. $. 
Shell turreted, strongly longitudinally plicate, and distinetly spirally 
grooved: colour brown, the interior with lighter spiral bands. Whorls 9 
or 10, flattened, with eight strong, rounded, sub-nodulose, longitudinal 
ribs, which on the body-whorl cover only the posterior half, and below them 
are three, sub-equidistant, well-marked, spiral ridges, with occasionally 
others on the pillar: spire whorls and posterior half of the body-whorl with 
three or four spiral grooves. Aperture broadly ovate, with a well-marked 
posterior canal; anterior canal very short, the aperture pes el notched at 
the base. Tani :56; breadth °2 inch. 
Hab. Katikati, near Tauranga. 
Distinguished from C. bicarinata by its bolder laaaro; fewer plications, 
and the three ridges at the base of the body-whorl. 
Brrrium ExILIS, Hutton. 
Shell turreted, with faint longitudinal plice, and distinct spiral ribs : 
colour dark reddish-brown. Whorls 8, flattened, the suture impressed : 
spire-whorls with two to four spiral nodular ridges, but on the apical whorls 
the nodules are absent: body-whorl with two to four nodular ridges, in 
front of which are about six smooth spiral ridges, making about nine in all; 
between the ridges there is usually a raised spiral line: columella nearly 
straight: aperture oval, without any notch at the anterior end; canal very 
short, or obsolete. Length ‘2; breadth :07 inch. 
Hab. Auckland Harbour. 
Igive an amended description of this species from specimens sent by 
Mr. Cheeseman. 
CINGULA LIMBATA, N. $. 
Shell elongately conical, smooth, polished but not iridescent. Whorls 
5 or 6, flattened: aperture ovate, peristome continuous, not iridescent 
within. Colour ashy brown, usually with a posterior row of white spots at 
the suture; last whorl often with angulated brown and white markings. 
Operculum unknown. Length :11; breadth -06 inch. 
Hab. Auckland (T. F. Cheeseman). 
CRYPTA UNGUIFORMIS, Lamarck. 
Dentition. Central tooth as broad as long, the reflexed portion triangu- 
lar, concave and slightly dentate on each side, the cutting point minute. 
First lateral broad, with about nine minute teeth. Second and third laterals 
similar, curved and slightly denticulate on the outer margin. 
Hab, Dunedin. 
