TURBO. 867 



Born has described this shell to be fourteen lines long, and fif- 

 teen broad, thin, sub-pellucid, and whitish, with five rounded 

 whirls, and three or six lamellated transverse keels, of which 

 the upper are thinner ; umbilicus broad and spiral. Chem- 

 nitz has quoted Born's species for his Helix tricarinata, but 

 his figure is more produced, and without any appearance of 

 an umbilicus ; in which respect it differs from his own de- 

 scription. Born's figure has more of the form of Helix 

 Gualteriaiia. 



SEPARATisTA. 124. Shell rather smooth, with three 

 keels, and the lower end of the body-whirl 

 detached; aperture triangular. 



Turbo Separatista. Chemnitz, x. p. 298. t. ^Qo. f. 1589 



and 1590. 

 Turbo helicoides. Gmelin, p. 3598. 



Inhabits the Indian Seas. Chemnitz. 



This shell appears, by the figures, to be about seven lines long 

 and nine broad, with the spire depressed, and the lower ex- 

 tremity of the body-whirl and the aperture quite detached ; 

 it is of a yellowish horn-colour. Gmelin has another Turbo 

 with the name of helicoides. 



NiVEUS. 125. Shell depressed, pellucid, white, 

 with three transversely striated and slightly 

 attached whirls ; umbilicus large. 



Turbo niveus. Chemnitz, x. p. 298. t. l65. f. 1587 and 



1588. Gmelin, p. 3598. 

 Helix circinata. Gmelin, p. 3652. 

 Kccmmerer Cab. Rudolst. t. 8. f. 4 and 5. 



Inhabits the Nicobar Islands. Cheynnitz. 



Shell about six lines long, and seven and a half lines broad, 

 white, and has the whirls only slightly attached to each other, 

 somewhat in the same manner as those of Turbo scalaris ; 

 the whirls are said to be sometimes distorted, and the mar- 

 gin of the aperture acute. 



HELICOIDES. 126. Shell depressed, white with lon- 

 gitudinal brown zic-zac stripes, and the whirls 

 rounded ; umbilicus deep and wide. 

 Turbo helicoides. Gmelin, p. 3602. 

 Turbo helicinus. Chemnitz, ix. part 2. p. 59. t, 123. f. 

 1067 and 1068. 

 Inhabits 



