CHITON.—Ptare I. 
Barnes’ Carton. Shell rather shortly ovate, valves nar- 
row, terminal ones radiately granose, grains isolated, 
somewhat irregular, remaining valves with the cen- 
tral areas smooth at the umbones, then decussated 
with strie, of which the longitudinal are the stronger, 
lateral areas radiately striated, strize irregularly and 
rather rudely granose; extreme valves and lateral 
areas chesnut-brown, umbones blackish, marked with 
a rather distant yellowish-white blotch on each side ; 
ligament rather broad, strongly granosely coriaceous, 
greenish olive. 
GRaY, Spicilegia Zoologica, p. 5. 
Hab. Coquimbo, Chili (found under round stones at low 
water); Cuming. 
Ihave been minute in describing this species, because 
its characters are unusually constant; its abbreviated 
peculiarity of form renders it easy to be distinguished from 
any other yet discovered. 
Species 2. (Fig. a and 6. Mus. Cuming.) 
Cuiton Cuminert. Chit. testé oblongo-ovati, valvis ter- 
minalibus tenué fortiter et creberrime radiatim granoso- 
striatis, ceteris areis centralibus ad umbones levius- 
culis et tenuissimé longitudinaliter sulcatis, latera versus 
striis granosis oblique decussatis, areis lateralibus striis 
granosis divergentibus exsculptis ; @reo-olivaced, nigri- 
cante et spadiceo-luteo plus minusve varia ; ligamento 
fortiter granoso-coriaceo, ereo-olivaceo. 
Cumine’s Curron. Shell oblong-ovate, terminal valves 
finely strongly and very closely radiately granosely 
striated, the rest with the central areas rather smooth 
towards the umbones, and very finely longitudinally 
grooved, obliquely decussated towards the sides with 
granose strie, lateral areas engraved with divergent 
granose strize; bronze-olive, more or less variegated 
with black and fawn yellow; ligament strongly gra- 
nosely coriaceous, bronze olive. 
FremBty, Zool. Journal, vol. ui. p. 198. pl. (sup.) 16. f.3. 
Hab. Valparaiso (under stones at low water); Frembly, 
Cuming. 
This well-known species is found abundantly in the 
neighbourhood of Valparaiso, and it is only surprising 
that it should have remained so long undiscovered. 
Species 3. (Mus. Cuming.) 
CHITON MAGNIFICUS. Chit. testd oblongo-ovatd, valvis 
terminalibus radiatim creberrimé striatis, striis viv 
gronulatis, ceteris areis centralibus postice levibus, 
antice longitudinaliter tenuisulcatis, lateralibus radiatim 
elevato-striatis, striis vie granulatis ; undique atro- 
olivaced, punctis ceruleis sparsd; Vigamento fortiter 
granoso-coriaceo, atro. 
THE MaGNiFicENT Curron. Shell oblong-ovate, termi- 
nal valves radiately very closely striated, strize scarcely 
evanulated, the rest with the central areas smooth 
posteriorly, longitudinally finely grooved anteriorly, 
lateral areas radiately elevately striated, striz very 
slightly granulous; jet olive throughout, sprinkled 
with blue dots; ligament strongly granosely coria- 
ceous, jet-black. 
Desuayes, Dict. Class. des Sciences Nat. vol. xii. p 455. 
Chiton latus, Sowerby. 
Chiton olivaceus, Frembly. 
Hab. Valparaiso (under stones at low water); Frembly, 
Cuming. 
Mr. Sowerby appears to have confounded this species in 
his ‘Catalogue’ with the following, C. striatus of Barnes, in 
which there are no traces of the numerous blue dots, that 
should have been distinguished in the accompanying 
figure. 
Species 23. (Fig. 3, 6. Mus. Cuming.) 
Curron sTRiatus. Chit. testé oblongo-ovaté, valwis ter- 
minalibus creberrimé undulato-striatis, ceteris areis 
centralibus postice circa umbones levibus, anticé tenue, 
autem fortiter, longitudinaliter sulcatis, areis latera- 
libus striis peculiariter reticulatis radiatis ; @rario- 
viridi aut rufescente, atro plus minusve flammaté ; 
ligamento fortiter granoso-coriaceo, atro. 
THE sTRIATED Curton. Shell oblong-ovate, terminal, 
valves very closely undulately striated, the rest with 
the central areas smooth posteriorly around the um- 
bones, anteriorly finely but strongly longitudinally 
grooved, the lateral areas peculiarly radiately reticu- 
lated ; copperas-green or reddish, more or less flamed 
with jet-black; ligament strongly coriaceous, jet 
black. 
Barnes, Amer. Journ. of Science, vol. vii. 
Hab. Chili. 
Chiton subfuscus, Sowerby. 
The difference between this and the preceding species is 
not one of colour only; upon examining the lateral areas 
of the valves, it will be found that the strie instead of 
being disposed in divergent rays, are so arranged as to 
form a delicate net-work. 
