THE MIDDLE LIAS OF NORTHAMPTONSHIRE. 
251 
Bed “ E.” 
This bed lias been placed as the lowest of tlie “ Spinatus” 
Zone, not so much for the fossils it contains as for those it 
does not. It appears to be a marly, micaceous clay, very 
sandy in some places, and containing concretionary ferru¬ 
ginous nodules, which latter, like the bed itself, are rather 
unfossiliferous. The thickness at Byfield is 2ft. 7in. ; but 
what I regard as the same bed is about 7ft. or more at Badby, 
and more than 13ft. at Watford. Exposures of the bed are 
uncommon, and fossils seem rare, so that I can give no 
useful list. j 3 ED << j) >> 
This is a ferruginous, sandy limestone, very shaly at 
Byfield and Watford, more compact at Badby and near 
Northampton, but in all these places abounding in fossils. 
It is only 4m. thick at Byfield, but is 2ft. 3in. at Watford, 
and 3ft. to 4ft. at Badby. I believe this bed in several places 
immediately underlies the rock-bed, forming with it only one 
mass of stone, the usual intervening bed of clay being absent. 
Fossils : 
Ammonites margaritatus 
(rare). Watford, Milton. 
Belemnites paxillosus . Watford. 
Belemnites . . Watford, Badby, Milton. 
Cryptamia consobrina . Badby. 
Pleurotomaria heliciformis Watford. 
Ostrea cymbium (abun¬ 
dant). Badby, Watford, Byfield. 
Ostrea sportella . Watford. 
Pecten liasinus (abundant) Byfield, Badby, Watford, Milton. 
Pecten textorius . Badby. 
Pecten cequivalvis . Watford, Badby. 
Limea acuticosta . Byfield, Watford, Milton. 
Leila ([sp . ?).Milton. 
Astarte stria to-sulcata . Badby. 
Protocarclium truncatum 
(abundant).Byfield, Badby, Watford, Milton. 
Cartlinia antigua . Badby, Watford, Milton. 
Tancredia (sp. ?). Watford. 
Pholadomya ambigua . Badby. 
Pleuromya costata . Badby. 
Terebratula punctata . Badby, Milton. 
Rhynchonella tetrahedra ... Badby. 
Pentacrinus (sp. ?). Badby. 
Cidaris (spine). Milton. 
Serpula . Watford. 
