imperialis, _Linn_. Syst. Nat. textile, _Linn_. Syst. Nat. terebra, _Born_, Test. Mus. Cæs. Vind. tessellatus, _Born_, Test. Mus. Cæs. Vind. Augur, _Bruguiere_, Encycl. Méth. Vers. obesus, _Bruguiere_ Encycl. Méth. Vers. araneosus, _Brug_. Encycl. Méth. Vers. gubernator, _Brug_. Encycl. Méth. Vers. monile, _Brug_. Encycl. Méth. Vers. nimbosus, _Brug_. Encycl. Méth. Vers. eburneus, _Brug_. Encycl. Méth. Vers. vitulinus, _Brug_. Encycl. Méth. Vers. quercinus, _Brug_. Encycl. Méth. Vers. lividus, _Brug_. Encycl. Méth. Vers. Omaria, _Brug_. Encycl. Méth. Vers. Maldivus, _Brug_. Encycl. Méth. Vers. nocturnus, _Brug_. Encycl. Méth. Vers. Ceylonensis, _Brug_. Encycl. Méth. Vers. arenatus, _Brug_. Encycl. Méth. Vers. Nicobaricus, _Brug_. Encycl. Méth. Vers. glans, _Brug_. Encycl. Méth. Vers. Amadis, _Chemn_. Conch. Cab. punctatus, _Chemn_. Conch. Cab. minimus, _Reeve_ (as of _Linn_.), Conch. Icon. terminus, _Lam_. Anim. s. Vert. lineatus, _Chemn_. Conch. Cab. episcopus, _Brug_. Encycl. Méth. Vers. verriculum, _Reeve_, Conch. Cab. zonatus, _Brug_. Encycl. Méth. Vers. rattus, _Brug_. Encycl. Méth. Vers. (teste _Chemn_.) pertusus, _Brug_. Encycl. Méth. Vers. Nussatella, _Linn_. Syst. Nat. lithoglyphus, _Brug_. En. Méth. Vers.[59] tulipa, _Linn_. Syst. Nat. Ammiralis, _var. Linn,_ teste _Brug._ Spirula Peronii, _Lam_. Anim. s. Vett. Sepia Hieredda, _Rang_. Magas, Zool, ser. i. p. 100. Sepioteuthis, _Sp_. Loligo, _Sp_. [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_.] [Footnote 8: P. cærulescens, _Lam_.] [Footnote 9: Sanguinolaria rugosa, _Lam_.] [Footnote 10: T. striatula of Lamarck is also supposed to be indigenous to Ceylon.] [Footnote 11: T. rostrata, _Lam_.] [Footnote 12: L. divaricata is found, also, in mixed Ceylon collections.] [Footnote 13: C. dispar of Chemnitz is occasionally found in Ceylon collections.] [Footnote 14: C. impudica, _Lam_.] [Footnote 15: As Donax.] [Footnote 16: V. corbis, _Lam_.] [Footnote 17: As Tapes.] [Footnote 18: V. textile, _Lam_.] [Footnote 19: ? Arca Helblingii, _Chemn_.] [Footnote 20: Mr. Cuming informs me that he has forwarded no less than six distinct _Uniones_ from Ceylon to Isaac Lea of Philadelphia for determination or description.] [Footnote 21: M. smaragdinus, _Chemn_.] [Footnote 22: As Avicula.] [Footnote 23: The specimens are not in a fitting state for positive determination. They are strong, extremely narrow, with the beak of the lower valve much produced, the inner edge of the upper valve denticulated throughout. The muscular impressions are dusky brown.] [Footnote 24: An Anomia.]