fuscis cincta, spira brevi acuta, anfractibus 5 convexis concentrice
sulcatis.
Icon. --

Shell orbicular, nearly trochi-form, white with two pale-brown bands on
each whorl; the one near the suture narrow, and the other, placed on the
middle of the whorl, broad; whorls five; convex rounded, with numerous
close concentric furrows; axis umbilicated; umbilicus rather narrow,
deep; aperture rather more than one half the length of the shell;
peristome (not formed ?) simple.

99. Chiton rugosus (n.s.)

Testa octovalvis glabra, valvis tuberculatis, ligamento glabro laevi.
Icon. --

Shell with eight valves, bald; valves covered with numerous small
tubercles both on the central and lateral area; marginal ligament smooth,
bald.

100. Patella tramoserica, Chemn. 11 179.
Icon. Chemn. 11 t. 197. f. 1912, 1913.

101. Patella radiata, Chemn. 11 100.
Icon. Chemn. 11 t. 197. f. 1916, 1917.

When young, the form of this shell is more conical than in the figure
above quoted, and the outer surface is finely radiately striated.

102. Patella neglecta (n.)
Patella melanogramma, Sowerby, not Gmel.
Icon. Sow. Gen. f.

When this shell is young, or when the older specimens have lived in deep
water, where their surface has not been broken by the shingle, or
corroded, or covered with coralloid incrustations, they are regularly
radiately ribbed; the ribs are covered with narrow intermediate grooves,
marked with a black spot on the internal edge of the shell, which is
permanent through all the variations of the outer surface. The inside is
pale purplish-brown, with a yellowish-white muscular impression. In the
older specimens the central disk is often of a pure opaque-white, and the
muscular impressions round the inner edge of the shell are both pellucid
brownish-white; length four inches, breadth three, height two inches.

This shell is abundant on the rocky shores of King George the Third's
Sound.

In the collection there is a worn specimen of another species of this
genus; but from its bad state, and from the very great confusion in which
the various species of Patella are involved, I do not venture to describe
it as a new shell, although there has not been any hitherto described to
which, in its present state, it can with any certainty be referred. It is
conical, convex, with twenty-four or twenty-five distinct convex ribs
alternately increasing in size; the grooves between the ribs are broad,
with irregular, concentric, black-