Cael TAOuNe 
Puate V. 
Species 24. (Mus. Cuming.) 
Curron GRANATUS. Chit. testd oblongo-ovatd, valvis for- 
titer rugoso-granatis, presertim ad latera, wmbonibus 
levibus vel erosis ; sordidé cinerea, granis nigricantibus, 
summitate umbonali nigro-maculata ; ligamento corneo, 
atro. 
THE GRANITE CuITOoN. Shell oblong-ovate, valves strongly 
roughly grained, especially at the sides, umboes 
smooth; dirty ash or stone colour, grains blackish, 
umbonal eminence blotched with black; ligament 
horny, jet black. 
ITab. ? 
A new species so distinct in itself, that I am not aware 
of any hitherto collected with which a comparison can be 
instituted. 
Species 25. (Mus. Cuming.) 
CHITON CASTANEUS. Chit. testé ovatd, valvis levibus aut 
minutissime puncturatis ; cinereo-spadiced, flammis al- 
bidis minutis, rufo-punctatis, varid, areis lateralibus 
margine postico articulatis valvis interdum duabus aut 
pluribus intense castaneis ; ligamento, corneo, arenaceo, 
sordidé fusco. 
THE cHESNUT CHITON. Shell ovate, valves smooth or 
very minutely punctured; ashy fawn colour, mottled 
with minute red-spotted whitish flames, posterior 
edges of the lateral areas articulated, sometimes two 
or more of the valves deep chesnut; ligament horny, 
arenaceous, dirty brown. 
Woop, General Conchology, p. 13. pl. 2 and 3. f. 2 and 3. 
(not C. castaneus, Quoy). 
Hab. Cape of Good Hope; Brown. 
The chief variation in the colour of this species consists 
in its beg more or less enveloped by a veil, as it were, 
of intense chesnut ; sometimes it covers it entirely, some- 
times, as in the specimen here figured, it appears on the 
terminal valves only. 
Species 26. (Fig. a, b,c. Mus. Cuming.) 
CHITON FASTIGIATUS. Chit. testd oblongo-ovatd, interdum 
medio subelevatd, valvis levibus, concentricée striatis, 
terminalibus ceterarum areisque lateralibus radiatim 
puncturatis ; fuscd vel albidd, lineis concentricis satura- 
tioribus varie pictdé, summitate umbonali interdum 
fused ; ligamento, corneo, translucido. 
THE SHARP-ANGLED Cuiton. Shell oblong-ovate, some- 
times rather elevated in the middle, valves smooth, 
concentrically striated, terminal valves and lateral 
areas of the rest radiately punctured; brown or 
whitish, variously painted with concentric lines of a 
darker colour, wmbonal summit sometimes dark 
brown ; ligament horny, transparent. 
Gray, Sowerby, Conch. Illus. Cat. n. 76. 
Hab. Strait of Magalhaens. 
The chief distinguishing features of this species are the 
rays of minute punctures upon the terminal and lateral 
areas, and the concentric style of colowring which is the 
same, however variable the tint. 
Species 27. (Mus. Cuming.) 
CHITON GRANOSUS. Chit. testd ovatd, valvis crassiusculis, 
terminalibus ceterarum areisque lateralibus radiatim 
granulatis, granulis solitariis, subdistantibus, interdum 
irregularibus, areis centralibus tenwissime autem per- 
spicué longitudinaliter granoso-liratis; atrd, macula 
albidé rudi oblonga, utrinque umbones ornata ; liga- 
mento fortiter granoso-coriaceo, granis subadamantinis. 
THE GRANOSE CuiTon. Shell ovate, valves rather thick, 
terminal valves and lateral areas of the rest radiately 
granulated, granules solitary, rather distant, some- 
times irregular, central areas very finely but distinctly 
longitudinally granosely ridged; jet black, ornamented 
with a rude whitish oblong blotch on each side the 
unboes; ligament strongy granosely coriaceous, some- 
what diamond-shaped. 
FReMBLY, Zool. Journal, vol. iii. p. 200. pl. (supp.) 17. f.1. 
Hab. Valparaiso, Chili (in the fissures of rocks, generally 
out of reach of the breakers); Frembly, Cuming. 
Mr. Frembly observes that this species, like many 
Patelle, is sometimes found at such a distance from the 
water, that it must pass a considerable portion of its ex- 
istence apart from it. 
February, 1847. 
