MYTILUS. 311 



Mytilus virgatus. Gmelin, p. 3361. 

 Mytilus laevigatas. Gmelin, p. 3362. 

 Mytilus, No. 54. Schroeter Einl. iii. p. 470. 

 Le Fonet. Adanson Senegal, p. 212. t. 15. f. 4. 

 Knorr, vi. t. 4. f. 2. Favanne, t. 50. f. F 2. 



Inhabits the coasts of Southern Europe, and the Cape of 

 Good Hope. Linnaus. West Indies. Regenfuss. Medi- 

 terranean, and coasts of Guinea. Gronovius. 



Shell four or five inches long, and nearly half as broad ; ven- 

 tricose, brittle, transversely wrinkled, and of a brownish 

 white colour covered with a blackish epidermis ; the valves 

 are very convex, and the name is derived from their sup- 

 posed resemblance to the hoof of an ox. Young shells 

 have the epidermis green, especially towards the margin, and 

 are sometimes marked with reddish zic-zac lines. The 

 above-mentioned figure of Knorr's belongs to this species, 

 and from it Gmelin appears to have constituted his M. vir- 

 gatus, though he has erroneously quoted iv. t. 4. f. 2. which 

 is a Turbo. 



latus. 25. Shell ovate, with the posterior side ra- 

 ther convex, and the apices distant and slight- 

 ly curved ; hinge channelled with a tooth in 

 one valve. 



Mytilus latus. Chemnitz, viii. p. 167- 1. 84. f. 747. 

 Mytilus durus. Solander's MSS. 

 Mytilus ungulatus, Var. Gmelin, p. 3354. 

 Mytilus, No. 13. Schroeter Einl. iii. p. 455. 

 Junior. Mytilus variegatus. Chemnitz, viii. p. 168. t. 84. 

 f. 748. 

 Mytilus viridis Chinensis. Chemnitz, xi. p. 253. t. 205. f. 



2022 and 2023. 

 Mytilus versicolor. Gmelin, p. 3359. 

 Mytilus saxatilis. Gmelin, p. 3360. ? 

 Mytilus edulis, Var. $. Gmelin, p. 3353. 

 Mytilus, No. 14. Schroeter Einl. iii. p. 456, and No. 27./ \ 



p. 460. 

 Lister Conch, t. 362. f. 201. Rumphius, t. 46. f. D. Ar- 

 gentine, t. 22. Q. Enc. Method, t. 218. f. 2. 

 Inhabits the coasts of New Holland, New Zealand, and China. 



Humphreys. 

 My specimen is seven inches long and three broad, and Mr. 

 Humphreys has one which measures eight inches by three 

 and a quarter ; it is of a dirty white colour, coated with a 



