544 



NEW YORK STATE MUSEUM 



Endoceras magister sp. nov. 



Page 423 



I Natural section of the type specimen, showing the size and mar- 

 ginal position of the siphuncle and the depth of the chambers 

 and septa 



The original is from the lower Chazy beds of the Valcour shore 

 (B 4 of the section described on page 398) and now in the New 

 York State Museum. 



