170 MR. G. F. ANGAS ON THE MARINE [Jan. 24, 
of a “uniform fiery red,” I have occasionally met with specimens of 
a beautiful purple colour. 
Fam. Cypr#1p. 
88. ARICIA THERSITES. 
Cyprea thersites, Gaskoin, Proc. Zool. Soc. 1848, p. 90. 
Station. On clusters of zoophytes, at the depth of 2 or 3 fathoms, 
in sheltered places. 
Hab. Salt Creek, Yorke’s Peninsula. 
This fine Cyprea is not only peculiar to South Australia, but ex- 
tremely limited in its habitat, the above-named locality being the 
only place where it has hitherto been met with. Two or three spe- 
cimens of a very beautiful jet-black variety have been found. 
89. CypRHA ANGUSTATA. 
Cyprea angustata, Gmelin, Wood's Cat. t. 17. f. 32. 
Station. Deep water, and on rocky coasts. 
Hab. Guichen Bay. 
This is truly a Tasmanian species, not extending into the South- 
Australian gulfs, where several allied species have their habitat. It 
is larger and of a more rounded form than C. comptont, and the base 
is white. 
90. CypREA COMPTONI. 
Cyprea comptoni, Gray. 
Station. On sandy muddy flats, from 2 to 4 fathoms. 
Hab. Port Lincoln; St. Vincent’s Gulf; Port Adelaide Creek. 
The animal of OC. comptoni is of a bright orange-colour, whilst 
that of C. bicolor of Gaskoin is of a pale lemon. The shell in many . 
specimens is entirely of a dark purple colour; in others it is of a 
rich brown, sometimes faintly banded, with the margins of the base 
paler, and spotted. 
91. CypR#A PIPERITA. 
Cyprea piperita, Solander, MS.; Gray, Zool. Journ. i. p. 498. 
Station, On sandy muddy flats, along with C. comptont. 
Hab. Port Lincoln. 
This species is closely allied to C. comptoni, but may be distin- 
guished by its more solid and gibbous form, smaller size, and having 
the orange flesh-tint of C. bicolor. 
92. Cypra@A BICOLOR. 
Cyprea bicolor, Gaskoin, Proc. Zool. Soc. 1848, p. 91. 
Station. Similar to the two preceding ones. 
Hab. Kangaroo Island; Port Adelaide Creek. 
This very pretty species is more cylindrical than either of its 
allies, and may easily be distinguished by its interrupted bands of 
flesh-colour, whilst the back of the shell is more or less spotted or 
reticulated throughout. 
ae 
