14 GEOLOGICAL MEMOIRS. 



1. Sandstone of ButschaJc (Lower ^iihdivision). 



Terebellum sopitum, Brander (T. convolutum, Lam.). Calcaire grossier, 



Sables moyens. 

 Cassidaria nodosa, Dixon (C. carinata, Lam.). Calc. gross., Sabl. moy. 

 Cytherea ambigua, Desk. Sables infer. 

 Cardium hybridum, Desh. Sables infer. 

 Liicina Volderiana, Nyst. (Belg. Sables de Wawre, Calc. de Gobertange.) 



Calc. gross. 

 Cardita sulcata, Brander (C. cor-avium, Lam.). Sables moy. 

 Limopsis auritoides, GaleoUi. (Belg. Jette, Laeken.) Sables moy. 

 Area decussata, Nyst. (Latdorf, Boom, Baesele, Weinheim, Kreuznach.) 



Oligocene. 

 Pinna margaritacea, Lam. Calc. gross., Sable moy. 

 Pecten corneus, Sow. (Belg. Laeken, Jette, Foret, Calc. d'Assche.) Calc. gross. 



Sabl. moy. 



2. Lower Sandstone of Tralctomirow. 



Cassidaria nodosa, Dixon. Calc. gross., Sabl. moy. 



Pyrula nexilis, Brander (non Lam.). (Barton, Latdorf, Olig. infer). Sables 



moyens. 

 Anatina riigosa. Bell. (Mzza.) 

 Lucina gigantea, Desh. Calc. gross. 

 Pinna margaritacea. Lam. Calc. gross., Sabl. moyens. 



3. Lower Blue Clay of Kiew. 



Pinna margaritacea, Lam. Calc. gross., Sabl. naoyens. 



"Vulsella deperdita. Lam. Calc. gross. 



Pecten corneus. Sow. (Belg. Laeken, Jette, Foret). Calc. gross., Sabl. 



moy., Calc. d'Asscbe. 

 Spondylus Buchii, Phil. (S. Teissenbergensis, Scbfhtl). Latdorf, Kressenberg. 

 Ostrea flabelliila, La7n. Calc. gross. 



„ gigantea. Sow. Calc. gross. 



A parallelism of the Kiew Eocene fossils with those of the Paris basin 

 is liable to some difficulties. In the sandstones of Butschak and Trak- 

 tomirow, we find two forms characteristic of the " Sables inferieurs," 

 associated with others from the '• Sables moyens" and the " Calcaire 

 grossier," or their Belgian analogues (" Systemes Bruxellien and 

 Laekenien"). Such forms are : — Terebellum sopitum, Cassidaria no- 

 dosa, Pyrula nexilis, Lucina Volderiana, L. gigantea, Cardita sulcata, 

 Limopsis auritoides, Pinna margaritacea, Pecten corneus. The occur- 

 rence of Ohgocene forms, as Area decussata, and many others whose 

 identification, notwithstanding their striking resemblance, must be 

 left to further investigation of more abundant material, deserves at- 

 tention. Such forms are : — Cardium, sp. (very abundant), resembling 

 C. catenulatum, Bronn, from Weinheim and Cassel ; Cardium, sp. 

 nov., resembling an undescribed species from Cassel; Voluta, sp., 

 analogous to V. Tiemseni, Boll., from the same locality; and Fusus, 

 sp., reminding one of Fusus hrevicauda, Phil., from Latdorf. The 

 fauna of the Blue Clay of Kiew includes forms of the " Sables 

 moyens " and the '' Calcaire grossier " (with the only exception of 

 Spondylus Buclii, Phil.), known also to exist at Latdorf and Kres- 



