CLAYS OF NEW YORK 599 



The Melosira and Steplianodisciis are present in 

 countless numbers. Only two specimens were found of tlie 

 Triceratium, and Dr D. B. Ward, of Pouglikeepsie, wlio 

 Las also given me much aid in the identification of my material, 

 informs me that this species is very common in the diatomaceous 

 earth from "Wellington, ISTew Zealand, but he has never heard of 

 its occurrence before in America. Sponge spicules are not un- 

 common in Lloyd's neck diatomaceous earth, and several forms 

 are figured. Samples of the red and brown clay from the sec- 

 tion given above were examined, but no organic remains were 

 found in them. 



