166 
BRITISH MOLLUSCA. 
Mus. Cas. 98 ; Poli, Test. Sic. ii. 149. t. 27 ; Dillw. Rec. 
Shells, i. 248. 
P. Jacobi, Chemn. vii. 273. t. 60. f. 588, 589. 
Argus calyculatus and Argoderma Jacobeus, Poli, ii. 254, 259. 
List. Conch . 1 . 165. f. 2, 1 . 166. f. 3 ; Enc. Meth. Vers, t. 209. f. 2. 
Inhab. the Mediterranean. Introduced by Pennant, as British, 
and said to be found at Weymouth by Dr. Pulteney. Corn- 
wall and Scarborough, Da Costa, 
a — e. “ Britain ? ” 
46. Ostrea Crista galli. 
Mytilus Crista galli, Linn. S. N. 1155; Montagu, T. B. 166; 
Mat. Sf Rack. Trans. Linn. Soc. viii. 104; Turt. Conch. Diet. 
109; Brit. Faun. 164. no. 313; Born, Mus. Cess. 120; Dillw. 
Rec. Shells, i. 300. 
Auris porci, Chemn. Conch. Cab. viii. 52. t. 75. f. 684. 
Ostrea crista galli, Lamk. 2nd ed. vii. 234 ; Sow. Gen. Shells, 
Ostrea, f. 2; Penny Cyclopcsd. xvii. 363; Reeve, Conch. Syst. 
t. 121. f. 2; Cuv. R. An. ed. Croch. t. 72. f. 3; Chenu, Lee. 
Elem. Hist. Nat. 108. f. 358 ; Forbes Sf Hanley, Brit. Moll. 
ii. 321. 
Knorr, Delices des Yeux, pt. v. t. 16. f. 1. 
Inhab. Asia. Introduced as taken alive on bottoms of ships by 
Montagu ; Turt on. 
47. Ostrea frons. 
Ostrea Irons, Chemn. Conch. Cab. viii. 61. t. 75. f. 686; Forbes 
Sf Hanley, Brit. Moll. ii. 321. 
Mytilus frons, Linn. S. N. 1155; Born, Mus. Cess. 123, Vign. 6. 
p. 121; Burrows, Elem. Conch. 1 . 10. f. 4; Dillw. Rec. Shells, 
i. 301; hid. Test. t. 12, Mytilus , f. 3. 
Ostrea Crista Galli, Mont, (not Lamk.) Test. Brit. 160?; Turt. 
Brit. Biv. 202. 
O. rubella, Lamk. Hist. An. s. Vert. 2nd ed. vii. 231; Cuv. R. 
An. ed. Croch. t. 72. f. 2. 
O. limacella and erucella, Lamk. Hist. 2nd ed. vii. 231. 
O. folium, Sow. Gen. Shells, Ostrea, f. 3 ; Reeve, Conch. Syst. 
t. 121. f. 3 ; Sow. Conch. Man. f. 181, 
Argenville, Conch, t. 23. f. D. 
Inhab. W. Indies. Introduced as taken alive on the bottom of a 
foreign vessel by Turt on. 
48. Discina ostreoides. 
Discina Ostreoides, Lamk. Hist. 2nd ed. vii. 297 ; Thorpe, Brit. 
Mar. Conch. 125, 
