818 TURBO. 



Turbo tenebrosus. Montagu Test. p. 303. t. 20. f. 4. 

 Maton and Racket, in Lin. Trans, viii. p. i60. Dorset 

 Cat. p. 49. t. 18. f. 15. 



Inhabits the mud and rocks near high-water mark, and in 

 ditches subject to the daily influx of the tide, on the coasts 

 of England. Montagu. 



Shell about a quarter of an Inch long, and nearly equally broad, 

 of a dark chocolate colour, with five rather ventncose whirls, 

 of which the body- whirl occupies half the length. Mr. 

 Montagu, who entertained considerable doubts of its being 

 distinct, says, " it is faintly wrinkled across the spire, but 

 rarely spirally striated as in the young littorens, and that in 

 an obsolete manner ; add to this, the strength of the shell 

 seems to indicate its being formed and full grown." 



RUDis. 7. Shell sub-ovate, rather obtuse, and the 

 whirls ventricose. 



Turbo rudis. Maton's Western Counties, i. p. 277. Do- 

 novan, i. t. 33. f. 3. Mo7itagu Test. p. 304. Maton 

 and Racket, in Lin. Trans, viii. p. 159. t. 4. f. 12 and 13. 

 Dorset Cat. p. 49- t. 18. f.6. 

 Turbo littoreus, Var. (3. Gmelin, p. 3588. 

 Turbo, No. 58. Schroeter Einl. ii. p. 84. 

 Cochlea lunaris, &c. Chemnitz, v. p. 233. 1. 185. f. 1853. 

 Inhabits the coasts of Norway. Chemnitz. Great Britain, 



Maton, &c. 

 Shell about three quarters of an inch long, and nearly equally 

 broad, of a pale brown or dirty yellowish white colour ; it 

 has five whirls well defined by the suture, and they are much 

 more ventricose than those of T. littoreus, by which the 

 species may be at once discriminated. Mr. Montagu says, 

 that the animal is yellowish without any stripes, whereas the 

 animal of T. littoreus is striped with black. 



MURiCATUs. 8. Shell umbilicated, sub-ovate, acute, 

 with transverse beaded strise, and the margin 

 of the pillar rather obtuse. 



Turbo muricatus. Linnceus Si/st. Nat. p. 1232. Born 

 Mus. p. 341. 1. 12. f. 15 and 16. Chemnitz, v. p. 170. 

 t. 177. f. 1752 and 1753. Schroeter Einl. ii. p. 7- and 

 Inn. Bau Conch, p. 60. t. 2. f. 2. Gmelin, p. 3589. 

 Schreibers Conch, i. p. 268. Burrow's Elements, p. l67. 

 t. 19. f. 4. 



Le Boson. Adanson Senegal, p. 171. 1. 12. f. 2. 



