﻿629 



saddles in the last three sutures of the paragerontic substage. Fig. 19, sectional 

 view of terminal end of Figs. 17 and 18, showing dorsum slightly broader and 

 flaiter than venter. - 



Figs. 20 and 21. Estonioceras imperfectum, after Schroder, op. cit., PI. xxvii, 

 Fig. 5 a, b, showing young enlarged with subventran siphuncle, etc., and no im- 

 pressed zone. 



Figs. 22-24. Edapkoceras ( TemnocJi) niotense, Met. W. Geol. III., v, PL xix, 

 Fig. 3, much reduced in size. Fig. 23, the dorsum is more convex than the 

 venter. 



