94 ANCYLID^ 



Genus : 2. ANCYLASTRUM, Bourguignat. 



' Etym. :— Lat. Ancylus, the moUuscau genus + -astrum, 

 resembling. 

 Type : — Patella fluviatilis, Muller. 

 {Patella, Ancylus, vett. auctt.) 



1815. BuUinus [pars] : Oken, Lehrh. Naturg., iii, abtb. 1, 



p. 303. 

 1815. Ancilus : Brard, Hist. Coq. Paris, p. 198. 

 1840. Ansuhis : \ Gray, in Turton's Manual, new ed., p. 247. 

 1840. Ansylus : j [Suggested as alternative spellings.] 

 1853. Ancylastrum, subg. of Ancylus : Bourguignat, Journ. 



de Conchyl., iv, p. 63. 

 1921. Pseudancylus : Walker: Nautilus, xxxv, -p. 58, 



1. Ancylastrum fluviatilis (Miiller). 



Etym. : — Lat. fluviatilis, inhabiting rivers. 



?1771. Lepas simplex: Buc'hoz, Aldrov. Lotharing., p. 236, 

 no. 1130. [Tesic Bourguignat. Buc'hoz was 

 not a binominal author.] 

 1774. Ancylus fluviatilis : Muller, Verm. Hist., ii, p. 201. 



1777. Patella lacustris, Linn. : Pennant, Brit. Zool., ed. 4, 



iv, 8vo, p. 143; 4to, p. 125. 



1778. Patella fl,uviatilis : DaCosta, Test. Brit., p. 1, pi. ii, f. 8. 

 1791. Patella fl,uviatilis : Gmelin, in Linn. Syst. Nat., ed. 13, 



i, pt. 6, p. 3711. 

 1799. Patella lacustris : Pulteney, Cat. Dorset., p. 51. 



. ' \ Patella cornea : Poiret, Coq. Aisne, p. 99. 



1801, \ Ancylus fluviatilis, Mull. : Draparnaud, Tabl. Moll. 

 July.j France, p. 47. 



1803. Patella fluviatilis, Gmel. : Montagu, Test. Brit., p. 482. 

 1803. Patella lacustris, Gmel. : Donovan, Brit. Shells, iv, pi. 



cxlvii. 

 1805. Ancylus fluviatilis. Mull. : Draparnaud, Hist. Moll. 



France, p. 48, pi. ii, f. 23 & 24. 

 1807. Patella lacustris, Linn. : Maton & Rackett, Trans. 



Linn. Soc, viii, p. 232. 



1813. Patella lacustris : Rackett, in Pulteney, Cat. Dorset., 



ed. 2, p. 58, pi. xxii, f. 8. 

 1813? Patella {Crepidula) lacustris: Fleming, Edinh. Ency., 

 vii, p. 65. 



1814. Ancylus riparius, Desm. : ) Desmarest, Bull, des Sci., 



1814. A'ucylus deperditus, Desm. -.1 Soc. Philom. Paris, p. 19. 



1815. Bullinus fluviatilis : Oken, Lehrh. Naturg., iii, abth. 1, 



p. 303. 

 1815. Ancilus fluviatilis : Brard, Hist. Coq. Paris, p. 200, 

 pi. vii, f. 3. 



