VOL. XV. (3) UPTON—UPPER LIAS AT STROUD 205 
equivalent beds are, according to Dr. Smithe, represented 
by about 10 feet 6 inches, and at Alderton according to the 
same Author by upwards of 30 feet. 
The Leptena-Beds lie immediately upon the Marlstone 
of the Middle Lias. Insigificant though they are in thick- 
ness, from their persistence over a large area, and peculiar 
fauna, they are of great interest. Although so thin they 
contain quite a large number of fossils peculiar to them- 
selves, among which are Koninckella Bouchardi, K. las- 
szana and Cadomella Moorez, diminutive survivors of the 
Athyride and Leptaride of the Paleozoic Rocks. Zevre- 
bratula globulina and Rhynchonella pygmea are confined 
to these beds, as are also Koninckella Bouchardi and 
Cadomella Moorei, which appear to be characteristic of the 
lower portion, and K. Liasstana, which occurs at the top. 
Moore gives a somewhat lengthy list of fossils from the 
Leptena-Beds of Ilminster in which locality they have a 
particularly rich fauna. - Unfortunately owing to the 
equivalent beds at Stroud only being available for a very 
short time, I was not able to make anything like an 
exhaustive list of the fossils, but amongst those which 
I did obtain are Zev. globulina and Rhyn. pygmea (both 
usually crushed), Koninckella Bouchardi, Cadomella 
Mooret, Orbiculoidea orbicularis and Thecidella sp. 
The beds have also produced some half-dozen species of 
Ostracoda, and considerable numbers of beautifully perfect 
Foraminifera of probably upwards of a dozen species. In 
Mr Moore’s paper he refers to the myriads of spines and 
plates of echinoids which are found in these beds at 
Ilminster. ‘The same remark would apply equally to the 
upper blue-bed (No. 13) at Stroud, indeed the finer 
portion of the washings consists very largely of micro- 
scopic echinoid spines. 
One striking difference between the Ilminster and 
Stroud beds is the abundance in the former of the genus 
