374 HAZATLAN TTNIVALTES 



^.7%:—Deser. Cat. p. 3. no. \Z.— Wood, Ind. Test. SuppL 



pi. 3, f. 7. — Val. in. Humh. Bee. Obs. vol. ii. p. 334. — Sow. 



Conch. HI. pi. 104, f. n.—Kien. Icon. Conch, p. 125, pi. 28, 



f. Z.—Bve. Conch. Icon. pi. 13, f. m.—Mke. in Zeit. f. Mai. 



1851, p. 33, no. 112.— C. B. Ad. Pan. Shelh, p. 32, no. 6. 

 Aricia arabicula, H. ^ A. Ad. Gen. i. 266. 

 ? + Cypreea punctulata, Gray, Zool. Journ. vol. i. p. 387. — Sow. 



Conch. III. pi. 4, f. 20.—Ki€n. Conch. Icon. p. 114, pi. 21. 



f. 2. — Desh. in Lam. An. s. Vert. vol. x. p. 563, no. 92. — 



(Panama, with C. arabicula, C. B. Adams.) 



Tliis shell differs essentially from A. Arabica in the concealed 

 spix'e, 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.l'. 



An elongated sp. ,, „ 1'17, „ '9. 



A transverse sp. „ „ 1'19, „ '75. 



The smallest adult „ 84, „ '54. 



SrtJ.— Acapulco, Sumholdt Sf Bonpland.—St. Elena and Eeal 

 Llejos, under stones, C«,';?/«i5'.— Panama ; 7 sp. under stones 

 from 8 — 20 in. 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 Sf 

 Havre Col. 



Tablet 1749 contains 4 sp. 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. — 1759, 1 sp. uniform greenish yellow, without 

 spots. — 1760, 5 sp. greenish, light markings. — 1761, 5 do. dark, 

 pattern distinct. 



Specimens shewing side.1. 1762, 5 sp. sides orange, panther 

 l)attern.— 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 C. punctulata : but the gradationa 

 between it and the typical C. anibicula are so numerous and gradual that I am 

 unable to separate them. Mr. Gaskoia however, whose authority in this genus 

 is paramount, regirds lUo species as distiuct. 



