4. B. Erythrasa, Gray, Ann. and Mag. Nat. Hist. 2 ser. viii. 



3821, 1851. Red Sea. 



5. B. lanceolata, D'Orbigny, Voy. Am. Merid. 497, t. 77, f. 



18, 19. Patagonia. 



Sub-genus ANCHOMASA, Leach. 

 Moll. Gt. Britain, p. 253. 



6. B. Manillensis, Philippi, Zeit. fiir Malak. 72, 1847. 



Sowerby, Thes. ii. t. 103, f. 17, 18. Philippi, Neuer Con- 



chyl. iii. Pholas t. 1, f. 2. 

 Pholas fragilis, Sowerby, Zool. Proc. 161, 1849. Thes. ii. t. 



108, f. 92, 93. 

 Pholas Manillce, Sowerby, Zool. Proc. 161, 1849. 3Ianilla. 



7. B. parva, Pennant, Brit. Zool. iv. 77, t. 49, f. 13, 1777. 



Sowerby, Thes. ii. f. 31, 32. Forbes and Hanley, t. 2, f. 2, 

 t. 4, f. 1, 2, and British authors. Philippi, Neuer Con- 

 chyl. t. 2, f. 2. Hanley, Desc. Cat. t. 2, f. 6. Wood, 

 Index Test. t. 2, f. 6. Adams, Gen. t. 89, f. 3. Chenu, 

 Man. ii. f. 19. 



Ancliomasa Pennantiana, Leach, Moll. Gt. Brit., 253, 1852. 



Pholas crenidatus, Spengler, Skrivt. Nat. ii. pt. i. 92, 1792. 



Pholas dactt/lus, var., Deshayes, Lamarck, Anim. s. Vert. vi. 

 45. 



Pholas dactyloides, Lamarck, Anim. s. Vert. v. p. 445, 1818. 



Pholas ligamentinus, Deshayes, Traite Eleni. 80, 1. 1, f. 11, 12. 



Pholas tuberculatus, Turton, Conch, dithyra, 5, t. 1, f. 7, 8, 

 1822. Chenu, Illus. Conchyl. t. 3, f. 3. Wood, Index 

 Test. Suppl. t. 1, f. 3. England. 



8. B. similis, Gray, In. Yates' New Zealand. 



Sowerby, Thes. ii. t. 103, f. 12—14. 

 Pholas antijjodum, Philippi, Zeitschr. fiir Malak. 71, 1817. 



Heiv Zealand. 



9. B. subtruucata, Sowerby, Zool. Proc. 69, 1834. 



Pholas lamellosa, D'Orbigny, Voy. Am. Merid. 498, t. 77, f. 

 20, 21. Peru, Isle Plata, Patagonia. 



Genus NAVEA, Gray. 

 Ann. and Mag. Nat. Hist., 2 ser. viii. 385. 



1. N. Newcombii, Tryon, Am. Jour. Conch, i. 39, 285, t. 2, 



f. 1 — 3, 1865. Lower California. 



2. N, nucifera, Fabricius, Spengler, Skrivt. Nat. iv. 40, t. 



10, f. 4. 9, 1798. 



18 



