10 STROBILOPSID^. 



In the Upper Cretaceous of Austria and Hungary several 

 snails have been found which, though imperfectly known, 

 appear to have some characters of Strobilops. The name 

 Pseudostrohilus has been applied to them. 



The shell is depressed, fragile, umbilicate, of 5 slowly in- 

 creasing, costulate w^horls. The lip is thickened, and on the 

 parietal wall there are three strong entering lamellae in the 

 best known species and type of Pseudostrohilus, P. riethmul- 

 leri, pi. 12, figs. 7, 8. Diam. 5 mm. Nothing is known of in- 

 ternal teeth or folds ^\dthin the basal lip. 



PsEUDOSTROBiLus RiETHMULLERi (Tauscli). Helix 7'ieth- 

 miilleri Tausch, Abhandl. k.-k. Geol. Reichsanstalt, XII, 1886, 

 p. 14, pi. 2, f. 10, 11. — Helix {Pseudostrohilus) riethmiilleri 

 Oppenheim, Zeitseh. Deutschen Geol. Gesellsch., XLIV, 1892, 

 p. 778. Non-marine beds of the Upper Cretaceous of the 

 Csinger Valley near Ajka, Bakony, Hungary. 



PsEUDOSTROBiLus AiGENENSis (Tausch). Helix oigeneiisis 

 Tausch, Abhandl. k.-k. Geol. Reiehsanst., XII, 1886, p. 26, pi. 

 2, f. Vla-h. Cretaceous: Gosau marl of Aigen near Salzburg, 

 Austria. 



Genus OBBINULA Stache. 



Ohhinula Stache, Abhandl. k.-k. Geol. Reichsanstalt, XIII, 

 1889, p. 119. Monotype 0. anthracophila (Stache). 



Thin, imperforate, flattened-conic, of 5 narrow, slowly in- 

 creasing whorls, with fine, sharp growth-lines, with stronger 

 ones at regular intervals; the earlier whorls somewhat more 

 steeply conic. Aperturp with two or three entering ridges. 

 Type, anthracophila, pi. 12, fig. 10. Diam. 4 mm. 



Obbinula anthracophila (Stache). Helix anthracophila 

 Stache, in Sandberger, Land- u. Siisswasser-Conchyl. Vor- 

 welt, 1871, p. 129, pi. 19, f. 7 a-h. — Ohhinula anthracophila 

 Stache, Abhandl. k.-k. Geol. Reichsanst., XIII, 1889, p. 119, 

 pi. 1, f. 26. — cf. Oppenheim, Zeitsehr. Deutsch. Geol. Ges., 

 XLIV, 1892, p. 779. "Cretaceo-Eocene" of Cosina, Dalmatia, 

 in a coal layer of the Stomatopsis beds. 



As Oppenheim has remarked, the accounts of this little 

 fossil are conflicting; it seems to have apertural armature 



