Mollusca.] 
NATURAL HISTORY. 
493 
of the shell, which is permanent throui^h all the variations of 
the outer surface. The inside is pale purplish-brown, with a yel- 
lowish-white muscular impression. In the older specimens the 
central disk is often of a pure opaque-white, and the muscular 
impressions round the inner edg'e of the shell are both pellucid 
brownish- white ; leng’th 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 con- 
fusion 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-brown, raised lines, which appear to be caused 
by the wearing away of the other part of the dark outer coat ; 
the inside is white with a brown disk, and the edge sinuated 
and furnished with grooves under the larger ribs. 
103. Haliotis Roei, (n. s.) 
Testa suhrotunda convexiuscula rugosa et pUcata spira- 
liter sulcata intus argenteo et ruhro margaritacea, spird 
prominuld. 
Icon. 
Shell roundish, rather convex; the outside reddish or brownish, 
regular ; closely but unequally spiral, ribbed, and irregularly and 
roughly concentrically striated and plaited; the row of perfo- 
rations is rather prominent, and pierced with six or seven moderate- 
sized, slightly tubular, holes ; the inside is iridescent, pearly, 
rather wavy, and exhibits two distinct v/horls ; the columella lip is 
short and flattened, outer lip rounded ; the spire is convex, rather 
prominent, placed about one-third of the breadth of the shell from 
the outer lip, and consists of three whorls, which very rapidly en- 
large. 
