MYTILUS, 303 



* * * Somewhat venlricose. 



lithophagus. 7. Shell sub-cylindrical, obliquely 

 striated on one side, and rounded at both 

 ends. 



Mytilus lithophagus. Linnaus Syst. ~Nat. p. 1156. Born 

 Mus. p. 124. t. 7. f. 4. Schroeter Einl. iii. p. 428. Gme- 

 lin, p. 3351. Barbut Verm. p. 66. t. 1 1. f. 5. Maton 

 and Racket, in Lin. Trails, viii. p. 270. t. 6. f. 1. 

 Mytilus. Enc. Meth. t.221. f. 6 and 7. 

 Bonanni Rec. 2. f. 28 and 29, and Kirch, f. 27 and 28. 

 Lister Conch, t. 427. f. 268. Rumphius, t. 46. f. F. Pe- 

 ttier Amb. t. 19. f. 13. Argenville, t. 26. f. K. 

 Variety. With an angular protrusion on one side. 

 Mytilus cinnamominus. Chemnitz, viii. p. 152. t. 82. f. 



731. 

 Mytilus, No. 6. ■ Schroeter Einl. iii. p. 452. 

 Inhabits the Indian, European, and Mediterranean Seas, bur- 

 rowed in rocks and coral. Linnteus. Coasts of Italy. Bo- 

 nanni. Amboyna. Rumphius. Toulon. Argenville. Africa. 

 D ' Avila. Jamaica. Sloane. Isles of France and Bour- 

 bon. Chemnitz. Naples. Ulysses. 

 Shell most commonly about half an inch long, and one third as 

 broad, but is sometimes almost twice as large; it is coated 

 with a dark chestnut or a greenish epidermis, and the inside 

 is bluish white, and somewhat silvery ; both valves are 

 marked with concentric ridges, and these on one side towards 

 the hinge are crossed with delicate oblique stria?. Mr. C. 

 Ulysses says that in the Bay of Naples 'the fishermen place 

 the animal in the sun, and with it besmear their hands and 

 faces at night so as to illuminate them as with phosphorus.' 



aristatus. 8. Shell sub-cylindrical, rounded at 

 the hinge, and armed at the opposite extre- 

 mity with two beak-like processes which 

 cross each other. 

 Mytilus aristatus. Solander's MSS. 

 Le Ropan. Adanson Senegal, p. 267. t. 19. f. 2. 

 Enc. Meth. t. 221. f. 8. Lin. Trans, viii. t. 6. f. 2. 

 Inhabits the coasts of Senegal burrowed in the shells of Balani. 



Adanson. In calcareous rocks. Sower by. 

 Shell an inch long, and rather more than one third as broad ; 

 generally of a dirty white, but sometimes brownish or fawn- 

 coloured j the waut of striee, and a beak-like process from the 



