CHITONELLUS.—Prart I. 
Dalaguete, Zebu, Philippine Islands; Cuming. Cape 
Rivers, Straits of Macassar; Sir Hdward Belcher. 
This noble species of which Mr. Cuming collected 
magnificent examples at the above-mentioned island, is 
distinguished by its extraordinary dimensions, by the con- 
centric grooving of the valves, and by their rich crimson 
colouring. The habits of this mollusk as observed by Mr. 
Cuming, and by Mr. Adams, in company with Capt. Sir 
Edward Belcher, are noticed with the introductory remarks 
to the genus. 
Species 3, (Mus. Cuming.) 
CHITONELLUS LARVEFORMIS. Chit. testé valvis minutis, 
posticé subremotis, oblongo-ovatis, medio elevatis, levibus, 
utringue subprofunde sulcatis, rufo tinctis ; pallio bre- 
vivilloso, roseo viridique marmorato. 
THE LARVA-SHAPED CHITONELLUS. Shell with the valves 
verysmall, rather remote posteriorly, oblong-ovate, 
eleva-ed in the middle, smooth, somewhat deeply 
grooved on each side, stained with red; mantle 
short-villous, marbled with red and green. 
De BuarnvitzE, Malacologie, p. 603. pl. 87. f. 6. 
Hab. Port Adelaide, Australia. Cape Rivers, Straits of 
Macassar ; Sir Edward Belcher. 
The delicate rose-tinted specimen here figured from 
Port Adelaide, appears identical with a handsome green- 
mottled specimen collected by Capt. Sir Edward Belcher, 
during the Surveying Expedition of H.M.S. Samarang, 
brought home in spirits and probably destined to be figured 
in the Zoology of that voyage ; both answering to the above 
recorded species of De Blainville. 
Species 4. (Fig. a and 6. Mus. Cuming.) 
CHITONELLUS STRIATUS. Chit. testd valvis trigono-clypei- 
formibus, anticée peculiariter acuminatis, medio levibus, 
utrinque suleatis, liris mtermediis granoso-scabris ; oli- 
vaceo-viridi, summitate obscure albipunctata ; pallio vil- 
loso, ferrugineo-fusco. 
THE STRIATED CHITONELLUS. Shell with the valves 
triangularly shield-shaped, peculiarly acuminated an- 
teriorly, smooth in the middle, grooved on each side, 
intermediate ridges granosely scabrous, olive-green, 
summit obscurely dotted with white; mantle villous, 
rusty-brown. 
Lamarck, Anim. sans vert. (Deshayes’ edit.) vol. vii.p. 481. 
Hab. Raines’ Island, Torres Straits; Capt. Ince. 
In this species which I take to be the C. striatus of 
Lamarck, the valves are somewhat flattened and more 
strictly triangular then in any other. 
Species 5. (Mus. Cuming.) 
CHITONELLUS GUNNII. Chit. testa valvis elongatis, angus- 
tis, convewis, postice productis, longitudinaliter liratis, 
liris peculiariter subundatis, ustulato-rufis; allio 
scabro, nigricante-fusco. 
Gunn’s Curronetius. Shell with the valves elongated, 
narrow, convex, produced posteriorly, ridged longi- 
tudinally, ridges peculiarly slightly waved, burnt red ; 
mantle rough, blackish-brown. 
Hab. Van Dieman’s Land; Gunn. 
Easily distinguished by the narrow prolonged rounded 
structure of the valves. Besides the specimen here figured 
from Mr. Cuming’s collection, there are some in the British 
Museum, collected by R. Gunn, Hsq., a gentleman much 
attached to Natural History, resident at Van Dieman’s 
Land, in honour of whom I have the pleasure of naming it. 
Species 6. (Mus. Cuming.) 
CHITONELLUS RosTRATUS. Chit. testi valvis trigono- 
oblongis, posticé rostratis, summitate levibus, utringue 
sulcatis, liris intermediis subgranosis ; olivaced, vires- 
cente punctatd ; ligamento densé brevivilloso, fusces- 
cente, fusco fasciato et punctato. 
THE BEAKED CHITONELLUS. Shell with the valves trian- 
gularly oblong, beaked posteriorly, smooth along the 
summit, grooved on either side, intermediate ridges 
somewhat grained, olive, dotted with light green ; 
ligament thickly short-villous, brown, dotted and 
banded with darker brown. 
Hab. Raines’ Island, Torres Straits; Capt. Ince. 
Distinguished by its style of colouring and the beaked 
structure of the valves. 
Species (Fig. 7. a and 6. Mus. Cuming.) 
CHITONELLUS OCULATUS. Chit. testd valuis trigono-oblongis, 
summitate levibus, utringue creberrime granoso-striatis; 
cinereo-virescente, fusco varid, summitate albo-articula- 
tai; ligamento scabro. 
THE EYED CHITONELLUS. Shell with the valves triangularly 
oblong, smooth along the summit, very closely gra- 
nosely striated on either side; ash-green, variegated 
with brown, summit articulated with white; ligament 
rough. 
Quoy and GarmarpD, ‘ Voy. de l’Astrolabe,’ Zool. vol. iii. 
p. 410. pl. 72. £37, 38. 
Hab. Australia. 
The articulated painting along the summit of the valves 
seems constant, whilst the sculpture is of a finer character 
than any of the preceding species; I venture to refer it to 
the C. oculatus of Quoy and Gaimard, but am unable to 
identify it on any other testimony than that afforded by a 
comparison with the figure above referred to. 
