Rhyn. 886 



ton yellow sandstone filled with Chonetes (?) but no Rhyn- 

 chonellas vipible. Specimens 12,980, two, contain several. 

 No. 12,982, a slab from Chemung at Leroy, Bradford Co., Pa., 

 has numerous impressions of it. (G. B. S. 1889,) YIII g, 



Rhynohonella contracta. See Stenoschisma contractum. 

 VIII g.— 000, p. 133, Spec. 11,884, Newport, Perry Co., Pa., 

 much broken away at the margins. VIII-IX. — 11,997 five 

 specimens, named thus by Whitfield; differently by H. S. Wil- 

 liams ; R. duplioata by Simpson, from Perry Co. Pa. — VIII g, 

 12,002, similar. 12,007, similar and named by J. Hall, S. du- 

 plioata in his examination of 0. E. Hall's special collection 

 COOO, p. 175 onward.) 12,188, from Leroy, Bradford Co., Pa., 

 one specimen, has it with Productella lachrymosa, Hall. 12,- 

 217, Perry Co., E. of Comp's mill, identified by J. Hall as R, 

 dupUcata. 12,231, Perry Co., near Newport Narrows, is ap- 

 parently of this species in Hamilton fossil ore. VIII c. — 12,- 

 203, fr )m Leroy, partly concealed. 12,485, Perry Co., an im- 

 pression, VIII G, 12,898, near Leroy, VIII g, 13,031, Le- 

 roy, numerous specimens in good condition on a large thin 

 Upper Chemung slab, with S^ mesacostalis. (Notes of G. B. 

 S. 1889). 



Rhynchonella cuhoides {Atrypa cuboides, Sowerby.) See 

 Rhynchonella venustula (Hall. Pal. N . Y., Vol. 4. ) Tully, 

 VIII d, — This shell assumes great importance in Prof H. S. 

 Williams' paper read (1889) at the Toronto meeting of the 

 Amer. Association. It marks the Cuhoides zone of Europe, 

 Asia, and eastern N. America. It has not been observed in 

 central and western N. America. If allowed to be contempo- 

 raneous everywhere, then, a considerable number of species 

 (includmg forms under different names very closely allied) 

 appeared before the Cuhoides stage in the English, European, 

 and Russian sections, but not imtil after that stage in the New 

 York sections. 



Rhynchonella cuneata ( Terehratula cuneata, Dalman. 



Trans. Swedish Academy, 

 ^^231827.) Geology Canada, 

 1863, page 315, fig. 323, 

 found in Niagara lime- 

 stone of Upper Canada. 



