CHITON. 
Puate XV. 
(Figures slightly magnified.) 
Species 78. (Mus. Cuming.) 
Curton contractus. Chit. testd oblonga, ad extremitates, 
precipue antica, peculiariter contractd, valvis termina- 
libus ceterarum areisque lateralibus concentricée granu- 
latis, granulis solitariis, centralibus minutissime et cre- 
berrime liratis, liris latera versus arcuatis, conspicuis, 
medium versus tenuioribus et oblique decussatim stria- 
tis; spadiceo-albd, fusco medio flammatd ; ligamento 
granoso-coriaceo, fusco. 
THE CONTRACTED Curton. Shell oblong, peculiarly con- 
tracted at the extremities, especially the anterior, ter- 
minal valves and lateral areas of the rest concentri- 
cally granulated, granules solitary, central areas very 
minutely and closely ridged, ridges curved and con- 
spicuous towards the sides, finer towards the middle 
and decussated with oblique striz ; light bay, flamed 
in the middle with brown; ligament granosely coria- 
ceous, dark brown. 
Hab. New Zealand. 
The chief peculiarity in this species consists in the at- 
tenuated contraction of the extremities; the sculpture is 
most elaborate, and the colouring unique. 
Species 79. (Mus. Cuming.) 
Curton pictus. Chit testé ovaté, valvis, posticd terminali 
truncata, rugis brevibus acute undulatis, interstitiis 
puncturatis, ornatis, arearum lateralium margine antico 
carinato ; roseo-albidd, maculis viridibus coccineisque 
lauté picté ; ligamento corneo, translucido. 
THE PAINTED Carron. Shell ovate, valves, the posterior 
terminal truncated, ornamented with short sharply 
undulated wrinkles, the interstices between which are 
punctured, anterior edge of the lateral areas keeled ; 
pinkish white, showily painted with green and scarlet 
spots ; ligament horny, transparent. 
Hab, Raines’ Island, Torres Straits; Capt. Ince. ° 
Another striking species, allied to C. truncatus, distin- 
guished by its sculpture and more flattened growth, 
Species 80. (Mus. Cuming.) 
CuiTon JANEIRENSIS. Chit. testd oblongo-ovatd, valvis, 
areis lateralibus conspicué elevatis, undique granoso- 
hiratis, liris arearum centralium valde tenuioribus ; 
sordide luteo-fuscd, macula trigond albicante per sum- 
mitatem umbonalem utriusgue valve ; ligamento corneo. 
Tue Janeiro Curron. Shell oblong-ovate, valves, the 
lateral areas being conspicuously elevated, granosely 
ridged throughout, ridges of the central areas much 
the finer; dull yellowish brown, with a triangular 
whitish spot along the umbonal summit of each valve ; 
ligament horny. 
Gray, Spicilegia Zoologica, p. 6. f. 8. 
Hab. Rio Janeiro. 
The lateral areas are more than usually elevated in this 
species. 
Species 81. (Mus. Cuming.) 
CHITON scaBRicuLus. Chit. testd ovatd, planiusculd, 
valvis undique scabré granoso-lineatis ; lineis arearum 
centralium tenuioribus; cinered et nigricante-viridi, 
albido variegata ; ligamento corneo, pilis brevibus per- 
paucis munito. 
THE RoUGH CurTon. Shell ovate, rather flattened, valves 
roughly granosely-lineated throughout, lines of the 
central areas the finer ; ash or blackish green, varie- 
gated with white; ligament horny, furnished with a 
few short hairs. 
Sowersy, Pro. Zool. Soc. 1832. p. 28. 
Hab. Guacomayo and Puerto Portrero, Central America 
(under stones) ; Cuming. 
The light variegated colouring appears in the form of 
curved sharply zigzag flames in the specimen here figured. 
Species 82. (Mus. Cuming:) 
Cuiton ConumBrensis. Chit. testd ovatd, depressiusculd, 
valois terminalibus ceterarum areisque lateralibus gra- 
nulis asperis solitaris irregulariter aspersis, arearum 
lateralium margine postico denticulato, areis centrali- 
bus tenuissime granoso-striatis ; sordidé rubente-fuscd, 
denticulis albis ; ligamento corneo, translucido. 
Tur CotumBian Curron. Shell ovate, rather depressed, 
terminal valves and lateral areas of the rest irregularly 
March, 1847. 
