18 
THE MIDDLE LIAS OF NORTHAMPTONSHIRE. 
Waldlieimia rcsupinata. There is no clay capping to the rock 
here, a fact which might with certainty have been predicted 
from the deep red colour of the soil around. 
A little beyond the last-mentioned quarry, and about a 
mile and a half from Hellidon, there is another showing 
about six feet of the rock-bed. It is situated on JStirch 
Farm, parish of Priors Marston, and we find the Lower 
Cephalopoda-bed, Fish-bed, Transition-bed and Rock-bed, all 
very much the same as at By field. 
A good deal of Marlstone has been quarried around 
Hellidon, but most of the quarries are now obscured. One, 
however, has been recently re-opened in a field just south of 
the village. The Serpentinus-beds are particularly well 
shown, but the Fish and Insect-beds are represented, if at 
all, by a thin marly layer containing numerous ammonites, 
only one inch in thickness, and the Transition-bed seems 
entirely absent. The Rock-bed is found here in large blocks, 
very little broken up by fissures, and would probably make a 
good building stone. Terebratula punctata , Rlujnclionella 
tetrahedra, and Pecten liasinus were fairly abundant. 
At Upper Catesby, just opposite the Staverton Road, is 
an old quarry showing about five feet of Rock-bed, with, at the 
top, a very fair development of the Transition-bed, some two 
inches, the latter yielding Ammonites acutas and gastropods. 
The soil above contains many pieces of limestone belonging 
probably to both the Fish-bed and Cephalopoda-bed. 
Following the road from Catesby to Badby we came 
across a small quarry near to Arbury Hill ; the section 
consists of the Rock-bed, capped by fragments of the Transi¬ 
tion and Cephalopoda-beds ; the fragments of the former are 
rather hard, and the fossils in consequence fairly well pre¬ 
served. Ammonites acutus is found, and many small gastropods ; 
one uncommon form, a Trochus approaching T. my sis (d’Orb), 
is found here. The following fossils were obtained from the 
rock-bed at this place :— 
Belemnites lihynchonella tetrahedra 
Pecten liasinus Terebratula punctata 
Cardinia concinna^ Sow.)or C.philea Waldheiviia rcsupinata 
(d’Orb), large specimens 
A little nearer to Badby the rock-bed may again be seen 
in a small section presenting its ordinary characters, and I 
mention this in particular because to the east of Badby we 
meet with a rock which, from its position, would certainly 
be taken to be the rock-bed, but which I believe is only partly 
that; it is probably just at the commencement of the extensive 
