THE AVONIAN OF THE AVON GORGE 
163 
Seminula. 
Seminula ficoides. 
Elongate- oval and smooth (Terebratuliform). 
Strong concentric lines of growth, but no expansions. 
This genus bears a close outward resemblance to Dielasma, 
from which however it is fundamentally separated by the 
possession of : — 
(1) Non-punctate shell. 
(2) Internal spires. 
Eumetria aff. carhonaria. 
Eumetria aff, carhonaria. 
It cannot be definitely asserted that this species belongs to 
Hall’s genus Eumetria since specimens showing the internal 
characters, upon which the diagnosis of the genus rests, have 
not as yet been discovered. 
