CHITON.—Ptate XVII. 
Species 102. (Mus. Cuming.) 
CHITON ustuLatus. Chit. testé elongato-ovatd, valvis 
terminalibus ceterarum areisque lateralibus radiatim 
liratis, liris corrugatis, hic illic granatis et bifurcatis, 
centralibus minutissimé reticulatis; ustulato-fusca ; 
ligamento granoso-coriaceo. 
THE SCORCHED Cu1Ton. Shell elongately ovate, terminal 
valves and lateral areas of the rest radiately ridged, 
ridges wrinkled, here and there grained and bifur- 
cated, central areas very minutely reticulated; burnt 
brown ; ligament granosely coriaceous. 
Hab. Australia; Jukes. 
A very distinct species, whether as respects form, 
colour, or sculpture. 
Species 103. (Mus. Cuming.) 
CHITON atTratus. Chit. testé oblongo-ovatd, valvis lavi- 
bus, terminalibus, posticd truncata, ceterarum areisque 
lateralibus granulis perpaucis obscuré radiatis ; fuscd, 
lineis lutescentibus radiatd, macula trigond atrata per 
summitatem umbonalem utriusque valve; ligamento 
corneo, translucido, 
Tur paRK CHIToN. Shell oblong-ovate, valves smooth, 
the terminal, posterior truncated, and lateral areas of 
the rest obscurely rayed with a very few granules ; 
brown, rayed with yellowish lines, with a dark trian- 
gular spot on the umbonal summit of each valve ; 
ligament horny, transparent. 
SoweErsy, Mag. Nat. Hist., 1840; Conch. Illus. f. 57, 58. 
Hab. 2 
Mr. Sowerby quotes the Falkland Islands as the habitat 
of this species ; I cannot, however, imagine it to belong to 
so cold a region. 
Species 104. (Mus. Cuming.) 
CHITON METALLICUS. Chit. test@ oblongo-ovatd, valvis 
terminalibus ceterarum areisque lateralibus radiatim 
liratis, liris granatis, posticis bifurcatis, centralibus 
medio levibus, latera versus longitudinaliter crebrili- 
ratis ; olivaceo-nigricante ; ligamento granoso-coriaceo. 
THE METALLIC Carron. Shell oblong-ovate, terminal 
valves and lateral areas of the rest radiately ridged, 
ridges grained, the posterior bifurcated, central areas 
of the rest radiately ridged, ridges grained, the pos- 
terior bifurcated, central areas smooth in the middle, 
longitudinally closely ridged towards the sides ; olive- 
black ; ligament granosely coriaceous. 
Hab. Australia. 
Not unlike the dark bronze variety of C. sguamosus, but 
upon examination will be found to differ materially. 
Species 105. (Mus. Cuming.) 
Cuiton Grayr. Chit. testd ovatd, valvis terminalibus 
ceterarum areisque lateralibus radiatim granatis, granis 
solitariis, distantibus, centralibus obscuré ewilissimé 
convergentibus, sulco conspicuo utringue summitatem 
umbonalem utriusque valve nisi ultime et penultime ; 
lutescente-rosed, ad latera albivariegaté ; ligamento 
corneo, translucido. 
Gray’s Cuiton. Shell ovate, terminal valves and lateral 
areas radiately grained, grains solitary, distant, cen- 
tral areas obscurely very faintly ridged, ridges con- 
verging posteriorly, with a conspicuous groove on 
either side the umbonal summit of each valve, ex- 
cept the last and last but one ; yellowish rose-colour, 
variegated at the sides with white; ligament horny, 
transparent. 
SowErBy, Pro. Zool. Soc. 1832. p. 57. 
Hab. Island of St. Laurence, Bay of Callao, Peru (found 
attached to shells at the depth of seven fathoms) ; 
Cuming. 
Having somewhat the aspect of C. crenulatus, but quite 
distinct. 
Species 106. (Mus. Cuming.) 
CHITON scaBER. Chit. testé subelongato-ovatd, valvis 
undique creberrimé minuté granoso-scabris, costatis, 
costis solitariis, distantibus ; viridi-fusco roseoque varia ; 
ligamento corneo, setoso. 
THE ROUGH CHITON. Shell somewhat elongately ovate, 
valves very closely minutely granosely rough, radia- 
tely ribbed, ribs solitary, distant; variegated with 
greenish brown and pink; ligament horny, bristly. 
Hab. Central America. 
Allied to C. se¢osus, but amply distinguished as above 
characterized. 
