Teredo nucivorus. _Sp_ Skr. Nat. Sels.[2] Solen truncatus. _Wood_, Gen. Couch. linearis, _Wood_, Gen. Conch. cultellus, _Linn._ Syst. Nat. radiatus, _Linn._ Syst. Nat. Anatina subrostrata, _Lam._ Ani. s. Vert. Anatinella Nicobarica, _Gm._ Syst. Nat. Lutraria Egyptiaca, _Chemn._ Couch. Cab. Blainvillea vitrea, _Chemn._ Conch. Cab.[3] Scrobicularia angulata. _Chem._ Con. Cab.[4] Mactra complanata, _Desh._ Proc. Zl. Soc.[5] tumida, _Chemn._ Conch. Cab. antiquata, _Reeve_ (as of _Spengl._), C. Icon. cygnea, _Chemn._ Conch. Cab. Corbiculoides, _Deshayes_, Pr. Zl. S. 1854. Mesodesma Layardi, _Deshayes_, Pr. Zool. Soc. 1854. striata, _Chemn._ Conch. Cab.[6] Cras-atella rostrata, _Lam._ Anim. s. Vert. sulcata, _Lam._ Anim. s. Vert. Amphidesma duplicatum, _Sowerby_. Species Conch. Pandora Ceylanica, _Sowerby_, Couch. Mis. Galeomma Layardi. _Desh._ Pr. Zl. S. 1856. Kellia peculiaris, _Adams_, Pr. Zl. S. 1856. Petricola cultellus, _Desh._ Pr. Zl. S. 1853. Sangumoiaria rosea, _Lam._ Anim. s. Vert. Psammobia rostrata, _Lam._ Anim. s. Vert. orcidens, _Gm._ Systems Naturæ. Skinneri, _Reeve_, Conch. Icon.[7] Layardi, _Desh_. P.Z. Soc. 1854. [Footnote 1: A. dichotomum, _Chenu._] [Footnote 2: Fistulana gregata, _Lam._] [Footnote 3: Blainvillea, _Hupé._] [Footnote 4: Latraria tellinoides, _Lam._] [Footnote 5: I have also seen M. hians of Philippi in a Ceylon collection.] [Footnote 6: M. Taprobanensis, _Index Test. Suppl._] [Footnote 7: Psammotella Skinneri, _Reeve._]