CHITON.—Ptuate XXVI. 
convergentibus ; viridi fusco rufoque variegatd, area- 
rum lateralium marginibus anticis nigro articulatis. 
THE PECTINATED CuitTon. Shell somewhat elongated, 
extreme posterior valve strongly umbonated and 
retuse, lateral areas elevated, rudely grooved, central 
areas conspicuously very closely ridged, ridges con- 
verging in a peculiar manner towards the umbones ; 
variegated red-brown and green, front edges of the 
lateral areas articulated with black dots. 
Sowrrsy, Conch. Illus. Cat. no. 8. f. 146. 
Hab. 2 
This species is apparently one of great rarity; I have 
not had the good fortune to meet with any other specimen 
than that here represented from the collection of W. 
Metcalfe Hsq., and the ligament is not in sufficiently good 
condition, to enable me to make out the character repre- 
sented in the ‘Conchological Illustrations ’ by Mr. Sowerby, 
of short calcareous processes like those of C. spinager. 
Species 137. (Mus. Belcher.) 
CHITON AcUTIROsTRATUS. Chit. testd elongatd, medio 
elevatd, lateraliter subcompressé, valvis suimmitate 
obtuso-carinatis, levibus, utringue creberrimé plani- 
granatis, umbonibus productis, acute rostratis, valvarum 
areis lateralibus parvis, subindistinctis, concavis; albidd, 
summitate nigro hic illic inquinatd ; ligamento corneo, 
spiculorum cristé parva ad latus utriusque value munito. 
THE SHARPLY BEAKED Carron. Shell elongated, ele- 
vated in the middle, somewhat compressed at the 
sides, valves obtusely keeled at the summit, smooth, 
very closely flatly grained on each side, wmbones 
produced, sharply beaked, lateral areas of the valves 
small, rather indistinct, concave ; whitish, stained here 
and there along the summit with black; ligament 
horny, furnished at the side of each valve with a 
small crest of spicula. 
Hab. Cape Rivers; Belcher. 
An elongated species, of somewhat compressed growth, 
remarkably distinguished by the sharply beaked structure 
of the umbones; the flat-grained sculpture of the valves 
approaches that of C. hirudiniformis, to which it offers a 
singular contrast of colour. 
Species 173. (Mus. Belcher.) 
CHITON FoRMOsSUS. Chit. testé oblongd, subangustd, valvis 
summitate subtilissime longitudinaliter striatis, ad 
latera granulatis ; vivide coccined ; ligamento corneo, 
spiculis vitreis nitidé albis dense obsito, spiculorum 
cristd densa erecté ad latus utriusque valve. 
THE BEAUTIFUL Curron. Shell oblong, rather narrow, 
valves very finely longitudinally striated at the 
summit, granulated at the sides; bright scarlet ; lig- 
ament horny, thickly beset with shining white spicula, 
at the side of each valve. 
Hab. Cape Rivers; Belcher. 
A most exquisite little species of a bright scarlet colour, 
surrounded with dense tufts of white shining glassy spicula. 
Of this and the C. petasus and acutirostratus, only a single 
specimen of each was obtained. 
Species 174. (Mus. Belcher.) 
CHITON FULIGINATUS. Chit. testé oblonga, valde elevati, 
valois terminalibus ceterarum areisque lateralibus sub- 
irregulariter concentrice striatis, prope marginem incisis, 
areis centralibus levibus, sub lente minutissimé reti- 
culatis ; sordidé albd, nigro plus minusve sparsim fuli- 
ginaté ; ligamento corneo, angusto, fusco. 
THE sooteD Cuiton. Shell oblong, very elevated, ter- 
minal valves and lateral areas of the rest somewhat 
irregularly concentrically striated, strie engraved 
near the margin, central areas smooth or, under the 
lens, minutely reticulated; dead white, more or less 
sparingly smeared with black; ligament horny, 
narrow, brown. 
Hab. Korean Archipelago; Belcher. 
Of numerous specimens collected at the above-mentioned 
islands, all are of an uniform dull white, more or less 
sparingly besooted with black. 
Species 175. (Mus. Metcalfe.) 
CHITON RUBER. Chit. testé ovatd, valvis concentricé 
striatis, levibus, umbonibus subdepresso-rostratis ; lu- 
tescente, rufo undique maculatd ; ligamento granoso- 
coriaceo, rufo-marmorato. 
Tue RED Curron. Shell ovate, valves concentrically 
striated, smooth, umbones somewhat depressly 
beaked; yellowish, blotched throughout with red; 
ligament granosely coriaceous, marbled with red. 
Lowe (not of Linneus), Zool. Journ. vol. u. pl. 5. f. 2. 
Hab. Shores of Britain. 
Collected by Mr. Metcalfe at Guernsey, but rare. 
Species 176. (Mus. Metcalfe.) 
Cuiton crinitus. Chit. testd ovatd, valvis summitate 
levibus, subcarinatis,ad latera granatis, granis grandibus 
5 J 
planulatis ; ligamento corneo crinito, spiculorum cristis 
munito. 
THE HAIRY Curron. Shell ovate, valves smooth along 
the summit, slightly keeled, grained at the sides 
grains large, flattened; ligament horny, hairy, 
furnished with tufts of spicula. 
Pennant, British Zoology vol. iv. pl. 39. f. 1. 
Chiton fascicularis, Sowerby (not of Linnzus). 
Hab. Britain. Weymouth, Lynn, Broadstairs &c.; Metcalfe. 
Shetland and Orkney Islands; Forbes and M’c Andrew. 
The C. crinitus is abundantly distributed throughout 
the shores of the British Isles, whilst the C. fascicularis is 
only found on the south coast and among the Channel 
Islands. Both occur equally in the Mediterranean. 
