5^4 



NEW YORK STATE MUSEUM 



Deltoceras vaningeni sp. nov. 



Page 480 

 See pi. 25, 26, 27 



I A specimen exhibiting part of an inner volution in somewhat 



oblique section and showing the position of the siphuncle 

 The original is from the lower Chazy limestone (B 7 of the section 



on page 398) at the Valcour shore and now in the New York 



State Museum. 



