CHITON.—Ptate VII. 
Very characteristic in appearance, though simple in 
detail; the colour is an nniform dull green, except along 
the rubbed umbonal summit, where it has a copperas hue. 
Species 37. (Fig. a, and 4. Mus. Cuming.) 
Cuiton Hennant. Chit. testd ovatd, subplanatd, valvis 
transversim latiusculis, longitudinaliter angustis, un- 
dique subtiliter granoso-striatis; fusco aut rubente, 
concentricé lineatd, maculd oblonga niyricante utringue 
umbones interdum picté ; ligamento corneo, setis bre- 
vissimis perpaucis asperso. 
Hennau’s Curron. Shell ovate, somewhat flattened, 
valves transversely rather broad, longitudinally nar- 
row, finely granosely striated throughout ; brown or 
reddish, concentrically lineated, sometimes painted 
with an oblong blackish spot on either side of the 
umboes ; ligament horny, sprinkled with a few very 
short bristles. 
Gray, Spicilegia Zoologica, p. 5. 
Hab. Callao Bay, Peru (found attached to Pectens in 
sandy mud, at a depth of from five to seven fathoms); 
Cuming. 
The habits of this and the following species appear to 
differ from the generality, in living attached to shells; the 
C. Hennahii may be readily distinguished by its broad 
peculiarity of form. 
Species 38. (Mus. Cuming.) 
CHITON Swarnsont. Chit. testd oblongo-ovaté, anticé sub- 
attenuata, valvis leviter rotundatis, crassiusculis, medio 
elevatis, terminalibus ceterarum areisque lateralibus 
creberrime granoso-radiatis, centralibus longitudinaliter 
tenuissime sulcatis ; aurco-luted, lineis sanguineo-fuscis 
concentricis undulatis undique creberrimeé pictd, macula- 
que oblonga utringue wmbones; ligamento corneo, 
translucido. 
Swainson’s Curron. Shell oblong-ovate, a little attenu- 
ated anteriorly, valves slightly rounded, rather thick, 
raised in the middle, terminal valves and lateral areas 
of the rest granosely rayed, central areas longitudi- 
nally finely grooved; golden yellow, very closely 
painted throughout with waved concentric red brown 
lines, and an oblong blotch of the same colour on 
either side of the umboes; ligament horny, transpa- 
rent. 
Sowersy, Pro. Zool. Soc., 1832. p. 27. 
Hab, Iquiqui and Callao, Peru (found attached to Mussels 
and Pectens, at a depth of from seven to nine 
fathoms); Cuming. 
Neither of Mr. Sowerby’s figures in the ‘ Conchological 
Illustrations’, and the plate which accompanies this, give 
anything more than a general outline of this species; it 
is distinguished by characters which are too minute for 
pictorial display, and the chief of these consists in its 
style of painting. ‘The ground colour of the shell, which 
is grooved and granulated, is of a deep yellow, and it is 
painted throughout with deep morone lines, disposed con- 
centrically, and a little waved, after the design of the 
C. lineolatus, but finer and closer set. 
Species 39. (Mus. Cuming.) 
Curton FuLVuS. Chit. testd oblongo-ovatd, valvis termi- 
nalibus ceterarum areisque lateralibus striis irregula- 
riter et superficialiter radiatis, centralibus longitudina- 
liter tenuissimeé striatis, striis elevatis, granosis ; livido- 
fulvco-fuscd, striis longitudinalibus et radiantibus opaco- 
ceruleo-albis ; ligamento corneo, translucido. 
THE FULVous CuiTon. Shell oblong-ovate, terminal 
valves and lateral areas of the rest irregularly and 
superficially rayed with striz, central areas very finely 
longitudinally striated, strice raised, granose; livid 
fulvous brown, longitudinal and radiating strize opake 
blueish white; ligament horny, transparent. 
Woop, General Conchology, p. 7. pl. 1. f. 2. 
Hab. Coasts of Spain and Portugal. 
This species presents a peculiarity of painting which 
cannot be adequately represented in an engraving ; a series 
of fine opal thread-like lines upon a dark fulvous brown 
ground, looking as if they were superadded by artificial 
means in body-colour. The central areas, as figured by 
Mr. Wood thirty years since, are sometimes inclined to 
yellow. 
