122 THE GEOLOGIST. 
Section of the Clee Hills at Oreton. 
These Millstone Grits are non-fossiliferous ; but the mineralogist may 
detect in their conglomerated structure many pebbles of a high class, 
jaspers and cornelians of pure quality being often met with. These 
beds lead up to the Mountain Limestone, which contains a fine series of 
organic remains, such as palatal teeth of the Cestraciont fishes. Peta- 
lodus Hastingsii and Psammodus porosus are abundant ; yet, although 
fragments of their jaws are not uncommon, I have only met with one 
specimen having the teeth in their true position. Shells and corals are 
plentiful, but limited in species, only the most typical being found. The 
Crinoids are well represented in the fragmentalia — one bed lying low 
down upon the yellow sandstone is little else than a mass of detached 
ossicula and pelvic plates, which are nearly all referable to one genus, 
Cyathocrinus. 
The ridge is boldly quarried ; in two cases the excavations pass 
through its back-bone of Mountain Limestone to the underlying yellow 
sandstones, and these spots I would especially recommend to the 
geologist who wishes to work out the animal contents of those particular 
strata. The rugged masses that are broken up for the kilns are weari- 
some to work and nearly devoid of fossils. The easternmost quarry on 
the ridge, where the beds are most vertical in their dip, I would also 
specially recommend; for in the yellow sandstone there exposed I have 
recently obtained some interesting remains of Pterichthys, consisting of 
plates of the back and, what are even more easy to make out, their 
curiously-shaped tails. These are new to English beds. With these 
I have found scales of Holoptychius nohillisimus, H. giganteus, 
and a detached jaw-tooth of H. HMertii (?) The fine head of 
Pterichthys, a new species, according to Sir P. Egerton, discovered 
by Mr. Baxter, of Worcester, was obtained from a quarry at Farlow, a 
