128 Transactions. — Zoology. 
Aomma FLAMMEA, Quoy and Gaimard. Pl. XV., fig. v. 
Animal with the margin of the mantle fringed. Dentition.—Teeth much 
like those of A. pileopsis, but they are weak in the middle and often break 
when detached, so as to divide the anterior from the posterior recurved 
portion, thus approaching Patella, where the anterior and posterior portions 
are always separated. Basal plates subrectangular, the length about twice 
the breadth, and divided by a longitudinal line into two portions. No 
accessory teeth. 
The specimen figured was collected at Lyttelton. 
PATELLA MAGELLANICA, Martyn (?). Pl. XVI., fig. a. 
Animal.—In this species, and in all the other of our Patellide that I have 
examined, the gills do not extend beyond the head, and the mouth is entire 
below, thus putting them into the genus Nacella, but the shell in all is 
thick and all live on rocks. In all the mantle is fringed. —Dentition.— ` 
Inner teeth simple, pointed; outer bidentate on the outer side: central 
plate cuneate, divided down the centre ; marginal plates rhomboidal, large. 
The specimen figured was collected at the Auckland Islands by Mr. E. 
Jennings, and sent me by Prof. T. J. Parker. 
PATELLA DENTICULATA, Martyn (= P. luctuosa, Gould, Pl. XVI., fig. 8). 
Dentition.—Inner teeth simple, pointed, set near together; outer teeth 
with two denticles on the outer side, the lower often semi-detached ; central 
plate lenticular, divided down the middle; marginal plates distant with a 
hooked anterior and jagged posterior end, & small detached plate a little 
above the hooked termination of the larger plate. 
The specimen figured was collected at Dunedin. 
PATELLA ILLUMINATA, Gould. Pl. XVI., fig. c. 
Dentition.—Inner teeth with a single denticulation on the outer side; 
outer teeth with two dentieulations on the inner and two on the outer gide, 
the lower outer denticle detached; central plate lenticular ; marginal plates 
linear forming a double series on each side. 
. The specimen figured was collected at Macquarie Island by Professor 
Scott, and sent me by Prof. T. J. Parker. 
ParELLA ontvacea, Hutton. Pl. XVI., fig. D. 
Deitition.—Inner teeth simple, pointed ; outer with two denticulations 
on the outer edge, the lower almost detached ; central plate linear, OT 
slightly euneate, divided longitudinally into two, each half with a bright 
ovalspot at the anterior end; marginal plates similar to those of P. den- 
ticulata, but the intermediate plate is much larger, and occupies most of 
the space between the hooked plates. 
The specimen figured was collected at Dunedin; in the figure the inner 
teeth are shown too widely separated. : 
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