CYPR^EA. 173 



white ; some specimens are of a bright yellow color, with the 

 bands dark butt'. Length, 1-8 inches. 



Australia, South Seas, Sandwich Is. 



C. TESSELLATA, Swn. PL 6, figs. 5, 6. 



Back yellowish brown, with three broad bands, sides tessellated 

 with square brown and white spots, the two upper spots on both 

 sides chestnut ; base variegated brown and white, teeth small, 

 numerous and tinged orange. Length, 1-2 inches. 



New Zealand, Sandwich Is. (?) 



** Dorsal surface spotted. 

 C. MAURITIANA, Linn. PI. 7, figs. 8, 9, 10, 11. 



Back humped, brown, covered with light brown or white spots 

 of irregular size, sides and base dark brown, almost black ; teeth 

 prominent, margin angulated. Length, 2'3-4 inches. 



Samoa, New Caledonia, Borneo, Ceylon. 



The 3'oung shell (fig. 11) is first fulvous-brown, with bands 

 of a yellowish hue arranged in waves, later the waves become 

 massed, leaving the yellow in triangular flame-like spots ; the 

 margins do not thicken and become angulate until after the 

 development of the teeth. 



This mollusk must possess great muscular power, for its shell 

 is the heaviest and most solid of the genus. 



C. CAPUT-SERPENTIS, Linn. PI. 6, figs. 98-100; PL 23, fig. 59, 



1 1 eddish or blackish brown ; the spots on the back having the 

 appearance of snow-white specks of unequal size ; extremities 

 tipped with white ; base grayish white, teeth conspicuous, white. 

 Length. '95-1-35 inches. 



Indian and Pacific Oceans. 



The young shell (fig. 100) is ashy blue, with a single, rather 

 broad central band. A more elongate variety (PL 23, fig. 59) of 

 a uniformly darker color and with margins less angular, has been 

 wrongly identified by authors as the C. caput-anguis, Phil. Com- 

 pared with caput-serpentis, P< s it is smaller in size, and 

 the spots are smaller, but specimens labeled caput-anguis and 

 sent to the Philada. Acad. Nat. Sciences by Mr. Brazier, who 

 collected them at Ballenger River. X. S. \\., are fully as large as 

 the typical form. The animal of C. caput-serpentis is brown, 

 tentacula red-spotted. 



