Maryland Geological Survey 573 



Gryphwa expanse Sowerby, 1831, Trans. Geol. Soc, London, 2d ser., vol. iii, 



pp. 349, 418, pi. xxxviii, fig. 5. 

 Ostrea vesisularis Deshayes, 1832, Ency. Method., vol. ii, p. 291. 

 Ostrea vesicularis Goldfuss, 1833, Petrif. germ., vol. ii, p. 23, pi. lxxxi, fig. 2. 



(Synonymy excluded.) 

 Gryphwa convexa Morton, 1834, Syn. Org. Rem. Cret. Group, U. S., p. 53, 



pi. iv, figs. 1, 2. 

 Gryphaa mutabilis Morton, 1834, Syn. Org. Rem. Cret. Group, U. S., p. 53, 



pi. iv, fig. 3. 

 Pycnodonte radiata Fischer de Waldheim, 1835, Bull. Soc. Imp. Nat., Mos- 

 cow, vol. viii, p. 119, pi. i, fig. 20. 

 Gryphaa dilatata Phillips, 1835, Yorkshire, pi. vi, fig. 1. 

 Ostrea vesicularis Deshayes, 1836, Ed. de Lamarck, vol. vii, p. 246. 

 Gryphaa vesicularis Bronn, 1837, Lethsea Geogn., vol. ii, p. 264, pi. xxxii, 



fig. 1. 

 Ostrea vesicularis d'Archiac, 1837, Mem. Soc. Geol. de France, vol. ii, p. 183. 

 Ostrea vesicularis Dujardin, 1837, Mem. Soc. Geol. de France, vol. ii, p. 229, 



No. 74. 

 Ostrea vesicularis Hisinger, 1837, Lethsea suecica, p. 46, pi. xii, fig. 2. 

 Gryphaa convexa Troost, 1840, 5th Geol. Rept., Tennessee, p. 46. 

 Ostrea vesicularis Leymerie, 1842, Mem. Soc. Geol. de France, vol. v, p. 29. 

 Ostrea vesicularis d'Orbigny, 1844, Pal. du Voyage de M. Hommaire, p. 441. 

 Ostrea vesicularis d'Orbigny, 1846, Pal. Franc, Terr. Cret., p. 742, pi. vii, 



fig. 1. 

 Ostrea vesicularis Reuss, 1846, Die Verstein der Bohm. Kreideformat., pi. 



xxix, figs. 21, 22; pi. xxx, figs. 1-8. 

 Ostrea vesicularis Geinitz, 1846, Grundr., der Verstein, pi. xx, fig. 18. 

 Ostrea vesicularis Bayle, 1847, Geol. des Ponts, pi. vi, fig. 62. 

 Ostrea vesicularis Leymerie, 1851, Mem. Soc. Geol. de France, ser. 2, vol. iv, 



p. 202, pi. x, figs. 2, 3. 

 Gryphaa vesicularis Bronn and Roemer, 1852, Lethaea Geogn., vol. ii, pt. v, 



p. 264, pi. xxxii, fig. 1. 

 Gryphaa vesicularis Conrad, 1852, Dead Sea, pi. xviii, figs. 103, 104. 

 Gryphaa vesicularis Owen, 1860, 2d Rept. Geol. Rec. Arkansas, pi. viii, fig. 6. 

 Gryphaa vesicularis Schafhautl, 1863, Sud-Bayerns Lethaea Geogn., p. 143, 



pi. xli, figs. 5, 6. 

 Gryphaa vesicularis Meek, 1864, Check List. Inv. Foss. N. A., Cret and Jur., 



p. 6. 

 Pycnodonte vesicularis Cook, 1868, Geol. of New Jersey, p. 374, text figs. 

 Gryphwa vesicularis Conrad, 1868, Ibid., p. 724. 

 Ostrea vesicularis Coquand, 1869, Mon. du Genre Ostrea, Terrain Cret., p. 



35, pi. xiii, figs. 2-4, 10. (Non figs. 5-9.) 

 Gryphwa vesicularis Stoliczka, 1871, Mem. Geol. Survey, India, Palaeont. 



Indica, Cret. Faunas of Southern India, vol. iii, p. 465, pi. xlii, figs. 2-4; 

 pi. xliii, fig. 1; pi. xlv, figs. 7-12 ? 

 Pycnodonte vesicularis Bayle, 1878, Expl. Carte Geol. France, vol. iv, Atlas, 



pt. 1, pi. exxxv, figs. 1-7. 



