304 



TURBO. WREATH-SHELL. Class VI. 



#### Cancellated. 



33. CLATH- 

 RUS. 



barred. 



Lin. Syst. 1237- No. 631. 



Gm. Lin. 3603. 

 Faun. Suec. No. 2170. 



List. Conch, tab. 588. Jig. 51. 

 Lin. Tr. viii. 170. 

 Mont. Test. Br. 296. id. Sup. 

 120. 



A. VAR. 



T. with a taper shell of eight spires, distin- 

 guished by elevated divisions, running from the 

 aperture to the apex. Tab. lxxxiv. Jig. Q. 



Pellucid ; ridges very thin. Tab. lxxxiv. 

 Jig. »2. 



These are analogous to that curious and ex- 

 pensive shell, the IVentle-trap.^ 



34. PARVUS. 



Lin. Tr. viii. 171. 



Mont. Test. Br. 310. 



* T. a pyramidal shell, with five or six volu- 

 tions ; ribs raised, distant ribs; minute; inha- 

 bits sandy shores. 



f Mr Montagu conjectures that the animal which inhabits 

 this shell, might have contributed to supply the celebrated Ty- 

 rian dye, as a beautiful purple liquor can be obtained from it ; 

 but the color does not appear so permanent as that procured from 

 the Buccinum Lapillus ; the latter having been once fixed, is 

 not affected by the application of acids, alkalis, or alkohol. Sen 

 Montagus Sup. to Test. Br. p. 104. and p. 120. En. 





