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PALAEONTOLOGY OF NEW-YOKK. 
Fig. 1 a. A portion of a large specimen, with the smaller extremity broken off 
Fig. 1 b. Section of the last. 
Fig. 1 c. A smaller specimen, very perfectly terminated at both extremities. 
Fig. 1 d. A minute specimen of the same species. 
Position and locality. These specimens (1 c and d ) are from the semi-altered slates near 
Waterford. The other specimen is from the calcareous beds associated with the same slate, 
near Troy. 
