48 
This is the rock bed of the Kelloway series—a moderately 
hard, jointed ferruginous sandstone of red or brownish yellow 
colour, eight feet ten inches thick. Fossils abound in it, es¬ 
pecially the gryphite shell, Grypliea hilohata^ large groups of 
which were readily obtained. Some fifty species were found, 
including many characteristic Kelloway shells. 
LIST OF FOSSILS FROM THE KELLOWAY ROCK, OF DREWTOK, 
NEAR SOUTH CAVE. 
RhynchoneUa socialis, Phil. 
Waldheimia ornitliocepliala, Sby. 
Gresslya peregrina, Phil. 
Pholadomya ovulum, L. ^ M. 
Groniomya literata, 8hy. 
Myacites decurtatus, Ph, 
Myacites. 
Astarte lurida, Phil. 
„ sp. 
Isocardia. 
Corbicella ovalis, Phil. 
Cyprina. 
Cardium. 
Cardium Crawfordii, Leek. 
Unicardium depressum, Ph. 
Cuculloea corallina, Damon. 
CucullaBa, sp. 
Area, sp. 
Modiola pulchra, Phil. 
Trigonia Rupellensis, d' Orb. 
Perna quadrata, Phill {non Sby.) 
Pema rugosa, Goldf. 
Pinna mitis, Phil. 
Pecten demissus, Phil. 
Pecten, sp. 
Avicula inaequivalvis, Sby. 
Placunopsis. 
Avicula Braamburiensis, Phil. 
Grrypbsea bilobata, Sby. 
Turbo, sp. 
Alaria bispinosa, Phil. 
Cerithium Culleni, Leek. 
Turbo sulcostomus, Phil. 
Ammonites calloviensis, Sby. 
Am. Jason, Rein. 
Am. Mariae, d'Orb. 
Am. modiolaris, Shuid. 
Am. Growerianus, Sby. 
Am. Koenigi, Sby. 
Am. sublaevis, Sby. 
Belemnites Oweni, Pratt. 
The dark blue homogneous clay above this rock is the Oxford 
clay in its proper position, containing the common fossils 
Belemnites Owenii, B. ahhrevicituSy Gryphea dilatata^ and Plesio¬ 
saurus. The rest of this cutting consists of the drifts and 
gravels, namely—a stiff blue boulder clay, fine yellow sands, 
and a coarse chalk gravel. 
Much of the Oxford clay is, no doubt, hidden in the next 
valley, together with some Kimmeridge clay ; but there is no 
sign of the presence of the Corallian rocks. 
We now reach the chalk wolds, where an interesting series 
of beds has been exposed in cuttings and tunnels. Some con¬ 
fusion has been produced here by the slipping of tlie chalk 
over the Kimmeridge and Ked chalk clays, which affects the 
level and apparent thickness of the latter rock. The Kim- 
