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 
flatter than venter. 
Figs. 20 and 21. Estontoceras tmperfectum, after Schréder, of. cz¢., Pl. xxvii, 
Fig. 5-a, b, showing young enlarged with subventran siphuncle, etc., and no im- 
pressed zone. 
Figs. 22-24. Edaphoceras ( Temnoch) niotense, Met. W. Geol, Ill., v, Pl. xix, 
Fig. 3, much reduced in size. Fig. 23, the dorsum is more convex than the 
venter. 
neler Cc som 
