Rens. 



860 



169, 26 specimens of various sizes, nearly all casts, very few 

 showing traces of striae; 000, p. 208, spec. 701-6,-7,-13, 



twenty speci- 

 mens ; also at 

 Or bisoni a 

 and Three 

 Springs (T3, 

 p. 119; 000, 



p. 208, 209, 

 specime n s 



701-6,-7,-13, 



Canada , I8h^ . twenty; 



702-5,-20, three; 703-9, with Orthis hippartonyx ; lOS-lO, 

 with markings not shown on the other casts; 703-11, three.) 

 In Centre Co. (T4, p. 431.) In Perry Co., Pisgah hill speci- 

 mens 12,103, probablythis species ; other casts 12,104, may be 

 small individuals, but look like li. suessana. G. B. S.) VI L 



Rensselaeria ovoides, Variety. Specimens 12,874, 



12,875,12,876, 12,882 (000, p. 141, spec. 59-10. Simpson.) 



Rensselaeria suessana {Meganteris suessana) Hall, 10th 



VII. XJW7. .../I^/' ,f^,9. 



Gco[ 



oc;\^ 



) I- 



fialf, Pcd.N. y. Vol ///, /^, W, />/. 101^ 



Report, 1857; Pal. N. Y. Vol. 3, 1859, page 459, plate 107, figs. 

 1 to 15; selected figs, ba^ small dorsal valve of usual or pre- 

 vailing form ; 5^, profile of full grown specimen ; 7, interior 

 of two ventral valves, one preserving the deltidial plates, the 

 other not; 8, interior of two dorsal valves, one showing the 



