TURBO. 829 



Inhabits 



This is an imperfectly defined species, and the shell, by Chem- 

 nitz's figure, appears to be ten lines long, and about equally 

 broad, with the pyramidal form and general habit of a 

 Trochus. Knorr, iv. t. 4. f. 5, which all the above cited 

 authors have referred to, has been quoted by Favanne (vol. ii. 

 p. 305), for a variety of Le Concomhre, which is Trochus 

 imbricatus. 



ARMATUS. 32. Shell sub-imperforate, scabrous, 

 with the summit of the spire depressed, and 

 a spinous rib round the middle of the lower 

 whirls ; base with concentrical somewhat 

 granulated striae. 



Turbo Calcar, Var. ^. Gmelin, p. 3592. 

 Turbo Calcar Mediterraneo. Ulysses's Travels, p. 470. 

 Turbo Calcar. Montagu Supp. p. 137. t. 29. f. 3. 

 Turbo rugosus. Chemnitz, x. p. 297. t. 165. f. 1585 and 



1586.? 

 Turbo, No. 22. Schroeter Einl. ii. p. 70. 

 Calcar Maris Mediterranei. Chemnitz, v. p. 198. t. ISO. 



f. 1780 and 1787. 

 La fausse Raboteuse eperonnee. Favanne, ii. p. 96. 

 Lister Conch, t. 608. f. 46 a. Martini, n. Mannigf. t. 2. 



f. 16 and 17- 

 Inhabits the Mediterranean. Chemnitz. Bay of Naples. Ulysses. 



Coasts of. the Western Islands of Scotland. Montagu. 

 Shell about eight lines long and ten broad ; and Mr. Montagu 

 says, that a shell, which exactly corresponds with Chemnitz's 

 figures 1786 and 1787, has been taken by Mr. Laskey, in 

 lona, one of the Western Islands, but is less than half as 

 large ; it has about five whirls, and in the middle of the two 

 lower ones, which are more ventricose, is a transverse rib, 

 armed with large radiated smooth somewhat upright spines ; 

 it is of a greenish colour, more or less tinged with pale 

 pink, especially on the spines, and the pillar-lip purplish 

 red. It is more likely to be a Variety of T. rugosus than of 

 T. Calcar, and principally differs from the former in having 

 nmch longer spines. 



RUGOSUS. 33. Shell sub-ovate, transversely striated 

 and armed with small vaulted scales, which 

 become larger on the margins of the whirls ; 

 pillar-lip flat, and the inside silvery. 



