CHAMA.—Ptate VII. 
ConraD, Journ. Acad. Nat. Sci. Philadelphia. 
Hab. Upper California. 
There is nothing remarkable in this shell to characterize 
it particularly, though evidently distinct from any other. 
Species 39. (Mus. Cuming.) 
Cuama Juxesiz. Cham. testé ovatd, valvis ambabus 
profuse et confertissimé brevispinosis, spinis valve infe- 
rioris subsquamatis ; intus extusque nived, umbonibus 
apice pallidée purpureis. 
Jukns’ Cuama. - Shell ovate, both valves profusely and 
very closely short-spined, spines of the lower valve 
‘somewhat squamate ; snowy white within and without, 
wmbones pale purple at the apex. 
Hab. Cape Upstart, North Australia (on the coral reefs 
at low water) ; Jukes. 
I dedicate this shell with a great deal of pleasure to 
Mr. Jukes, the zealous naturalist of H.M.S. ‘The Fly’, to 
whom this monograph is indebted through Mr. Cuming 
for several interesting species. 
Species 40. (Mus. Cuming.) 
CHAMA SARDA. Cham. testé suborbiculari, valvis ambabus 
peculiariter exiliter oblique striatis, squamis brevibus 
asperis remotis ; intus extusque vivide corallo-rubra. 
THE CORNELIAN Cuama. Shell somewhat orbicular, 
both valves peculiarly faintly obliquely striated, with 
sharp remote short. scales; bright coral-red within 
and without. 
Hab, Honduras (attached to coral) ; Dyson. 
Rich in colour and very characteristic in sculpture, being 
crossed in an oblique direction throughout with faint strie, 
and roughened here and there with short scales like the 
asperities of a coarse file. 
