899 



Ehyn. 



'46 



m2 



Rhynchonella recinula. (Hall, Trans. Albany Inst. Vol. 

 4, 1856, p. 9 ; Whitfield, Bulletin 3, American Mus. 

 Nat. Hist. N. Y., 1882, plate 6, fig. 46). Collett's 

 Indiana Report of 1882, p. 330, plate 29, fig, 46, 

 enlarged six times^ back view of type specimen ; 

 possibly a young Ehyn, {Atrypa)nana? Spergen 

 Hill, etc. Subcarhoniferous. XL 



Rhynchonella reeurvirostra, Hall. {Atrypa recurvi- 

 II c ^52 (3^ Ca>, rostra). Pal. N. Y. Vol. 1, 1847, Black river and 

 Hudson river. Geol. Canada, 1863, page 168, fig. 

 152. Trenton and Hudson river formation, lie, 

 I f # 7775. 



Rhynchonella robusta {Atrypa rohusta^ Hall. Pal. N. 



Y. Vol. 2, 1852, p. 71, pi. 23, fig. 7 a, 5, c, d. Dorsal and ven- 

 tral valves, profile and front views of a full grown specimen, 

 showing 3 plications in the mesial sinus and 4 on the eleva- 

 tions ; specimen somewhat flattened from the rounder perfect 

 shape; species easily known by its few strong folds, undivided 

 from the beak. From the upper limestone of the Clinton at 

 Lockport,N. Y.) — In Pennsylvania found by White in the 

 Montour ridge fossil ore hed and in the Clifiton upper olive 

 shale. (G7, pp. 113, 232, 252, 341) ; and by 0. E. Hall in the 

 Furguson Valley Clinton ore of Huntingdon Co. (Proc. A. P. 

 S., Jan. 5, 1876.) Va, 

 Rhynchonella rugosa. Hall. (Atrypa rugosa) Pal. N. 



la 



1 y> 



V, 



GvCdV; 



Y. Vol. 2, 1851, Niagara, Geol. Canada, 1863, page 315, fig 

 321. Clinton formation, Va^ b. 



