374 MAZATLAN UNIVALVES 
p. 78 :—Descr. Cat. p.3. no. 13.— Wood, Ind. Test. Suppl. 
pl. 3, f.7.—Val. in. Humb. Rec. Obs. vol. ii. p. 334.—Sow. 
Conch. Til. pl. 104, f.77.—Kien. Icon. Conch. p. 125, pl. 28, 
f. 3.—Rve..Conch. Icon. pl. 13, f. 60.—Mke. in Zeit. f. Mal. 
1851, p. 33, no. 112.—C. B. Ad. Pan. Shells, p. 32, no. 6. 
Aricia arabicula, H. g A. Ad. Gen. 1. 266. 
?+Cyprea punctulata, Gray, Zool. Journ. vol. i. p. 387.—Sow. 
Conch. Ill. pl. 4, f. 20.—Kien. Conch. Icon. p. 114, pl. 21, 
f. 2.—Desh. in Lam. An. s. Vert. vol. x. p. 563, no. 92.— 
(Panama, with C. arabicula, C. B. Adams.) 
This shell differs essentially from A. Arabica in the concealed 
spire, white teeth, and shape of the mouth and front, which 
have a general resemblance to A. caput-serpentis. The varia- 
tion in tint and markings is considerable ; some few diseased 
specimens even presenting the aspect of A. obvelata. A very 
large number were found, repaired after more or less severe frac- 
tures. The largest specimen measures long. 1°45, lat. 1°. 
An elongated sp. ,, Fh ors LFSaarmne 
A transverse sp. ,, ae OE IN ayy 
The smallest adult see AE) sO, 
Hab.—Acapulco, Humboldt & Bonpland.—St. Elena and Real 
Lejos, under stones, Cuming.— Panama; 7 sp. under stones 
from 8—20in. in diameter, at and just below low water mark 
of neap tides; C. B. Adams.—S. W. Mexico, common ; 
P. P. C.—Mazatlan; in extreme profusion; L’pool & 
Havre Col. 
Tablet 1749 contains 4sp. young and adolescent.—1750, 5 sp. 
dark, pattern indistinct.—1751, 5 do. distinct.—1752, 5 sp. 
small size, dark.—1753, 5 sp. lighter, very small.—1754, 5 sp. 
normal state.—1755, 5 sp. light, pattern distinct.—1756, 5 do. 
indistinct.—1757, 4. do. very light.*—1758, 3 do. with opaque 
whitish deposit.—1749, 1 sp. uniform greenish yellow, without 
spots.—1760, 5 sp. greenish, light markings.—1761, 5 do. dark, 
pattern distinct. 
Specimens shewing sides. 1762, 5 sp. sides orange, panther 
pattern.—1763, 2 sp. with numerous spots and dots.—1764, 
3 sp. spots large, few.—1765, 1 sp. spots small, numerous.— 
* One of these appears to belong to the form ©. punctulata: but the gradations 
between itand the typical C_arabicula are so numerous and gradual that I am 
unable to separate them. Mr. Gaskoin however, whose authority in this genus 
is paramount, regards the snecies as distinct. 
