CHAMA. 
Puate III. 
Species 10. (Hig. a and 2 Mus. Cuming.) 
OHAMA PULCHELLA. Cham. testd suborbiculari, trigond, 
lateraliter affivd, valvd superiore, concentricé pulcher- 
rime laminatd, laminis striatis et serratis, posticé am- 
pliter foliacéis, inferiorelavigatdetirregulariter foliaced, 
foliis grandibus, valvarum marginibus levibus ; nived, 
Serruginco-fusco radiata. 
Tae prerry Cuama. Shell somewhat orbicular, three- 
sided, affixed by the side, upper valve concentrically 
very beautifully laminated, laminee striated and ser- 
rated, posteriorly largely foliated, lower valve smooth 
and irregularly foliated, foliations large, margins of 
the valves smooth; snowy white, rayed with rust- 
brown. 
Hab. Cape Upstart, New Holland (on coral reefs at low 
water); Jukes. 
In the examples of this beautiful species figured in the 
accompanying plate, it may be observed that the umbones 
are turned in one from left to right, and in the other 
from right to left. 
Species 11. (Mus. Cuming.) 
Cuama stnuosa. Cham. testd suborbiculari, posticé sinuaté, 
valvis ambabus concentricé laminatis, laminis in squamis 
tenuibus fornicatis eleganter productis, squamis postice 
ampliter foliaceis et striatis, valvarum marginibus levi- 
gatis; intus extusque nived, squamis basi pulcherrime 
purpureo-rosers. 
‘YHE sINUOSE Cuama. Shell somewhat orbicular, sinuated 
posteriorly, both valves concentrically laminated, 
lamine elegantly produced into thin vaulted scales; 
the posterior of which are largely foliated and striated, 
margins of the valves smooth; white within and 
without, scales very beautifully coloured round the 
base with purple rose. 
Broperip, Trans, Zool. Soc. vol. 1. p. 3038. pl. 39. f. 11, 
Hab. Brazil; Miller. 
One of the most delicate and beautiful species of the 
genus; the shell is pure white, whilst the lamine of 
yaulted scales are coloured round the base in a very 
peculiar manner with rose-purple. 
Species 12. (Mus. Cuming.) 
CHAMA MULTISQUAMOSA. Cham, testé ovatd, planiusculd, 
valvis undique creberrime fortiter et irregulariter squa- 
matis, squamis valve superioris suberectis, inferioris 
plano-adpressis, valvarum marginibus internis subti- 
lissime crenulatis ; albidd, roseo-tinctd, squamis niveis, 
intus albd, roseo-tinctd. 
THE MANY-SCALED Cuama. Shell ovate, rather flattened, 
valves very closely strongly and irregularly scaled 
throughout, scales of the upper valve rather erect, of 
the lower flatly pressed down, internal margins of the 
valves very finely crenulated; whitish, tinged with 
rose, scales snowy white, interior white, tinged with 
rose. 
Hab. Matnog, Island of Luzon, Philippines (attached to 
coral); Cuming. 
The shell here figured offers another instance in which 
the lower umbone is erected into a horn, after the manner 
represented by Chemnitz in his C. cornuta, (C. unicornis, 
Bruguiére) ; it does not however agree in sculpture with 
that species. 
Fig. 13. represents the Chama producta of Broderip in 
Trans. Zool. Soc, vol. 1. p. 305. pl. 39. fig. 4. which I 
have perfectly identified as an enormously produced speci- 
men of the Chama iostoma of Conrad, figured in the pre- 
ceding plate. For Spcies 13 see Plate VI. 
Species 14. (Mus. Cuming.) 
CHAMA SULPHUREA. Cham. testdé subtrigono-ovatd, pla- 
niusculd, valvd superiore undique syuamatd, sgamis 
numerosis, regularibus, brevibus, appressis, prope mar- 
ginem longioribus et magis erectis, inferiore oblique 
liratis, liris latiusculis, ad marginem squamatis, valva- 
rum marginibus internis minutissime crenulatis ; pal- 
lide luted, purpurco ab umbonibus subindistincte radiata. 
THE stuLpHUR CHama. Shell somewhat triangularly 
ovate, rather flattened, upper valve squamate through- 
out, scales numerous, irregular, short, pressed down, 
near the margin longer and more erect, lower valve 
obliquely ridged, ridges rather broad, squamate at the 
margin ; internal margins of the valves very minutely 
crenulated ; pale yellow, somewhat indistinctly rayed 
from the umbones with purple. 
Hab. Calapan, Island of Mindoro, Philippines (attached 
to stones); Cuming. 
December, 1846. 
