166 
BRITISH MOLLUSCA. 
Mus. Cces. 98 ; Poll, Test. Sic. ii. 149. t. 27 ; Dillw. Rec . 
Shells , i. 248. 
P. Jacobi, Chemn. vii. 273. t. 60. f. 588, 589. 
Argus calyculatus and Argo derma Jacobeus, Poll , 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. 66 Britain ? 55 
46. Ostrea Crista galli. 
Mytilus Crista galli, Linn. S.N. 1155; Montagu, T. B. 166; 
Mat. 8f Rack. Trans. Linn. Soc. viii. 104; Turt. Conch. Diet. 
109 ; Brit. Faun. 164. no. 313 ; Born , Mus. Cces. 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 Cyclopced. xvii. 363 ; Reeve, Conch. Syst. 
t. 121. f. 2; Cuv. R . An. ed. Croch. t. 72. f. 3 ; Chenu, Leg. 
Elem. Hist. Nat. 108. f. 358 ; Forbes & 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 frons, Chemn. Conch. Cab. viii. 61. t. 75. f. 686; Forbes 
fy Hanley, Brit. Moll. ii. 321. 
Mytilus frons, Linn. S. N. 1155; Born, Mus. Cces. 123, Vign. 6. 
p. 121; Burrows, Elem. Conch. 1 . 10. f. 4; Dillw. Rec. Shells, 
i. 301 ; Ind. Test. 1. 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. 
