bivalve shells. 209 



6. Petricola semilamellata. 



p. testa tenui, alba, trigona ; sulcis transversis remotiusculis ; 

 superioribus lamellosis ; interstitiis longitudinaliter striatis. 



Petricola semilamellata, Lamk. An. s. Vert. v. 503. no. 3. 

 Desk. Lamk. An. s. Verf. ed. 2. vi. 159. no. 3. 

 Deless. Rec. de Coq. pi. 4. f. 10 a, b. 



Hanley, Descr. Cat. p. 52; in Wood, Ind. Suppl. pi. 11. f. 41. 

 Petit, Journ. de Conch. 1851, p. 288. 



Hab. Rochelle. 



b. Striatm. 



7. Petricola lithophaga. B.M. 



P. testa ovato-trigona, antice turgida, postice attenuata, hiante 

 utraque extremitate, alba, tenui, fragili, longitudinaliter striata; 

 striis antice tenuibus, postice crassioribus et distantioribus. 



Venus lithophaga, Retzius, Act. Taur. 1786, \7S7,Add.Y). 1 1 .f. 1,2. 

 Tellina, Poli, Test, des deux Sidles, i. pi. 7- f- 14, 15. 

 Mya decussata, Mont. Test. Brit. Suppl. p. 20. pi. 28. f. 1 . 



Turt. Conch. Diet. p. 102. 



Flem. Brit. Anim. p. 4G6. 



Thorpe, Brit. Mar. Conch, p. 41. 



Wood, Gen. Conch, p. 99; Ind. Test. pi. 2. f. 17- 



Dillw. Cat. i. 46. 

 Petricola striata, Lamk. An. s. Vert. v. 504. no. 5. 



Poyraud. Cat. des Moll, de Corse, p. 35. no. 51. 



Collard de Cherres, Test, du Finist. p. 17. 



Bouchard, Moll, de Boulonnais, p. 16. 



Desk, in Lamk. An. s. Vert. ed. 2. vi. 158. no. 5. 



Deless. Rec. de Coq. pi. 4. f. 11. 



Hanley, Descr. Cat. p. 52. 



Wood, Ind. Test. Suppl. 2. pi. 11. f. 42. 



Potiez Sf Mich. Gal. de Douai, ii. 241. no. 4. 



Petit, Journ. de Conch. 1851, p. 289. 

 Petricola costellata, Lamk. An. s. Vert. v. no. 6. 



Payraud. Cat. des Moll, de Corse, no. 52. 



Desh. in Lamk. no. 6. 



Deless. Rec. de Coq. pi. 4. f. 12. 



Hanley, Descr. Cat. p. 52. 



Wood, Ind. Suppl. 2. pi. 11. f. 43. 



Requien, Cat. des Moll, de Corse, p. 17. no. 39. 



Petit, Journ. de Conch. 1851, p. 289. 

 Petricole costelle'e, Chenu, Traite elem. p. 200. f. 59. 

 Petricola Roccellaria, Lamk. loc. cit. no. 7- 



Payraud. Cat. des Moll, de Corse, p. 35. no. 53. 



Desh. in Lamk. no. 7 ; Traite elem. i. 495. pi. 12. f. "J. 



