GASTROCOPTA, EUROPE. 117 



55. GASTROCOPTA MUNIERI (Deshayes). Pupa munieri 

 DESK., Anim. sans Vert. Bassin Paris, ii, 1864, p. 858, pi. 56, 

 f . 25-27. Oligocene, Limestone of Beauce, near fitampes. 



56. GASTROCOPTA FISCHERI (Deshayes). Pupa fischeri 

 DESK., 1. c., f. 34-36. 



57. GASTROCOPTA BIFIDA (Desh.). Pupa bifida DESK., t. c. 

 p. 860, pi. 56, f. 19-21. This species and the two preceding, 

 from the same formation and locality, have been placed in the 

 synonymy of B. didy modus, but not from a comparison of 

 specimens. Their status and exact horizon are uncertain. 



58. GASTROCOPTA OBSTRUCTA (Al. Braun). Pupa obstruct a 

 AL. BR., in Walchner's Geognosie, 2. Aufl., (1851?), p. 1135. 

 Leucochilus obstructum Al. Br., BOETTGER, Jahrb. Nassau. 

 Ver. Nat., 42, 1889, p. 284. Pupa obstructa var. francofur- 

 t<MW BOETTGER, Palaontographica, 24, 1877, p. 195, pi. 29, f. 6 

 (Affenstein near Frankfurt). Lower Miocene, Schleusen- 

 kammer bei Niederrad. 



59. GASTROCOPTA PISSIDENS (Sandberger). Pu-pa fissidens 

 SANDB., Conchyl. Mainzer Becken, 1863, p. 57, pi. 5, f. 16. 

 Leucochilus fissidens Sandb., BOETTGER, Jahrb. Nassau. Ver. 

 Nat., 42, 1889, p. 285. Jooss, same Jahrb., vol. 64, 1911, p. 65. 

 Upper Oligocene of Hochheim; Hydrobia beds of the Lower 

 Miocene of Mosbach-Biebrich and Wiesbaden. 



60. GASTROCOPTA FERDINANDI (Andreae). Leucochilus fer- 

 din-andi ANDREAE, Mittheil. Eomer Mus., No. 18, 1902, p. 18, 

 f. 9. Miocene of Oppeln, Silesia. 



61. GASTROCOPTA BAUDONI (Michaud). PL 21, figs. 13, 14. 

 Vertigo baudoni MICH., Journ. de Conchyl. 1862, p. 76, pi. 

 4, f. 2 (Pupa b., on plate). Pliocene, Hauterive. 



62. GASTROCOPTA LONGIDENS (Clessin). Pupa (Leucochila) 

 longidens CLESSIN, Berichte Naturwiss. Vereines zu Regens- 

 burg, xiii Heft, 1912, p. 105. Middle Miocene, Undorf near 

 Regensburg. 



63. GASTROCOPTA UNDORFENSIS Pils., n. n. Pupa (Leucoch- 

 Ua.) miliolum CLESSIN, t. c., p. 106. Not Pupa miliola Orbigny. 



Same locality. This species and the preceding have not 

 been figured, and their relations to the other species are not 

 known to me. 



