150 



C. limosa, Gray. = Oorb. limosa. 



C. mactroides, Deshayes. = 0. mactriformis. 



C. Manillensis, Philippi. = Oorb. Manillemis. 



C. Moquinianus, Bourguignat. = an Ancylus, typ. error. 



C. nitens, Philippi. = Oorb. nitem. 



0. obesa, Hinds. = B. obesa. 



0. orientate, Lamarck. = Oorb. orientate. 



0. Paranacensis, d'Orbigny. = Oorb. Paranemis. 



0. Peruviana, Deshayes. = 0. anomala. 



C. Petitianus, Bourguignat. = an Ancylus, typ. error. 



0. Philippinarum, Hanley. = B. Philippinarum. 



0. pulchella, Mousson. = Oorb. pulchella. 



O. pullata, Phillipi. = Oorb. pullata. 



0. purpurea, Lea. = Venus gemma. 



0. pusilla, Parreys. = Oorb. pusilla. 



0. radiata, Parreys. = Oorb. radiata. 



O. Raymondi, Bourguignat. = an Ancylus, typ. error. 



0. recurvata, Valenciennes. = Oorb. recurvata. 



0. regulata, Gassies. = B. tenebrosa. 



0. rivalis, v. d. Busch. = Oorb. rivalis. 



C. rotundata, Lea. = B. rotundata. 



O. similis, Gray. = Oorb. Woodiana. 



0. solida, Philippi. = 0. Nicaraguana. 



C. subquadrata, Deshayes. = 0. Californica. 



C. aubradiata, Kurr. = Oorb. subradiata. 



O. tenebrosa, Hinds. = B. tenebrosa. 



C. trigonella, Lamarck. = Oorb. trigonella. 



C. turgida, Lea. = 0. Bengalensis. 



0. variegata, D'Orbigny. = Oorb. limosa. 



C. violacea, Lamarck. = B. violacea. 



0. Woodiana, Lea. = Oorb. Woodiana. 



Genus SPK32RITJM, Scopoli. 

 Scopoli, Introduct. 397, 1777. 

 Ohama, d' Argenville, Hist. Nat. Lithol. Conchyl. 368, 374, 



pi. xxxi, No. 9, 1742. 



Telling Linnaeus, Linn. Syst. Nat. x, edit. I, 678, 1758. 

 Oardium, Dacosta, Brit. Conch. 173, pi. xiii, f. 2, 1778. 

 Cyclas, Bruguiere, Encycl. Meth. pi. 301, 1792. 

 Nux, Humphrey, Mus. Calonn. 59, 1797. 

 Musculium, Link., Coll. Univ. Bostock. pt. iii, 151, 1807. 

 Cornea, Megerle, Mag. Gesell. Naturf. Berlin, v. 56, 1811. 

 Corneocyclas, Fdrussac, Diet. Sci. Nat. xii, 277, 1818. 

 Amesoda, Rafinesque, Ann. Gen. Sci. Phys. et Nat. v. 310, 



1820. 



