GEOLOGY OF THE FOURTH DISTRICT. 



ORGANIC REMAINS OF THE ONONDAGA LIMESTONE. 



No. 33. — No. 63, page 160. 



Fig. 1. Cyathophyllum ? Caledonia. 



Fig. 2. Cyathophyllum dianthus, (Goldfuss Petrefacta, p. 54, pi. 15, fig. 13, and pi. 16, fig. 



1. Silurian Researches, p. C90, pi. 16, f. 12, 12 a to 12 c.) Caledonia. 

 Fig. 3. Syringopora ? The fossil is silicificd, standing in relief upon the surface of the 



rock. 



No. 34. — No. 3, page 132, Report of the Third District. 

 Fig. 1. PeMamerus elongata. 

 Fig. 2. Jlipparionyx [A try pa) consimilaris. 

 Fi"\ 3. Delthyris undulatus. 



These fossils are not common in the Fourth District, though they have been seen at two or 

 three localities. 



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