CHAMA. 
Prats IX, 
Species 47. (Mus. Cuming.) 
CHAMA ExiGua. Cham. testd parvd, tenui, subpellucidd, 
circuiter trigond, lateraliter affiad, valvé superiore 
minutissinme appresso-laminaté et radiatim striaté, 
subasperd, inferiore divaricatim excavato-punctatd, per 
basem lamellaté ; alba. 
THE LITTLE CoamMa. Shell small, thin, somewhat trans- 
parent, circuitously triangular, affixed by the side 
upper valve very minutely appressly laminated and 
radiately striated, rather rough, lower valve divari- 
cately excavately punctured, lamellated along the 
base ; white. 
Hab. Singapore (dredged from sandy mud at the depth 
of seven fathoms attached to fragments of shells) ; 
Cuming. 
A little transparent white shell of which Mr. Cuming 
collected several specimens; the lower valve is distin- 
guished by a peculiarity of punctured sculpture somewhat 
analogous to that of the C. arcinella, there is no trace of 
it, however, in the upper valve, as in that species. 
Species 48. (Mus. Cuming.) 
CHAMA FRAGUM. Cham. testdé suborbiculari, valvd supe- 
riore concentricé tenuissime fimbriato-laminatd, laminis 
marginem versus subtubulosis, inferiore rude tubuloso- 
squamatd, valvarum marginibus minute crenulatis ; 
alba, rufo-punctata, intus albidd. 
THE STRAWBERRY CHAMA. Shell somewhat orbicular, 
upper valve concentrically very finely fimbriately 
laminated, laminzee somewhat tubulous towards the 
margin, lower valve rudely tubulously squamate, 
margins of the valves minutely crenulated; white, 
dotted with red, mterior whitish. 
Hab. Island of Mindoro, Philippines (attached to coral ); 
Cuming. 
The sculpture of this species somewhat approaches that 
of the C. spinosa; it is of a more minute and delicate 
character and easily distinguished on comparison. 
Species 49. (Mus. Cuming.) 
CHAMA FLORIDA. Cham. testé suborbiculari, valvis amba- 
bus imbricatis, marginem versus eleganter jimbriato- 
laminatis, valvarum marginibus minute crenulatis ; 
pellucido-alba, punctis vivide roseis ab umbonibus pul- 
cherrime radiatd ; intus alba. 
THE FLORID CHAMA. Shell somewhat orbicular, valves 
imbricated, elegantly fimbriately laminated towards 
the margin, margins of the valves minutely crenu- 
lated; transparent white, very beautifully ranyed 
from the umbones with bright rose dots, interior white. 
Lamarck, Anim. sans vert. (Deshayes’ edit.) vol.vi. p. 583. 
Hab. Honduras ; Dyson. 
I refer this very characteristic shell to the above La- 
marckian species solely on the authority of Mr. Hanley, 
who has no doubt of its being identical with the species 
known under that name in Paris; it does not agree very 
accurately with Lamarck’s description, but as the growth 
of this genus is so variable I trust to his judgment in the 
matter. 
Species 50. (Mus. Cuming.) 
CHAMA VARIEGATA. Cham. testé oblongo-ovatd, circuiter 
trigond, valvd superiore lamellatd, precipue in seriebus 
duabus posticis, lamellis latiusculis appressis, interstitiis 
oblique rugoso-liratis, sqguamis perpaucis brevibus remo- 
tis, valvarum marginibus levibus ; corallo-rubra, liris 
lamellis squamisque albis, intus albidd, rufo-fusco tinctd. 
THE sTRIPED CuaMma. Shell oblong-ovate, circuitously 
triangular, upper valve lamellated, especially in two 
rows on the posterior side, lamellz rather broad and 
appressed, interstices obliquely transversely ridged, 
lower valve obliquely roughly ridged with a very few 
short remote scales, margins of the valves smooth ; 
coral red, ridges lamelle and scales white, interior 
whitish, stained with red-brown. 
Hab Honduras ; Dyson. 
The colouring of this shell has a very pretty effect, the 
oblique ridges and other external sculpture being white 
upon a coral or orange-red ground. 
Species 51. (Mus. Cuming.) 
Cuama cistuLa. Cham. testd orbiculari, postice profundé 
sinuatd, valvis ambabus peculiariter rudé lamellaté et 
squamatd, squamis ad margines subproductis, appressis, 
? valvarum marginibus levibus ; albidd, roseo-fuscescente 
varia, intus alba. 
January, 1847. 
