VOL: XVL.(2) | INFERIOR-OOLITE ECHINOIDS 167 
CLYPEUS HuGI, Agassiz, var. CONICUS, Paris. 
Clypeus Hugt, var. conicus.—Upper Trigonia-Grit, Upper Coral- 
Bed, or Doulting Stone, Writhlington Quarry, Radstock. 
See page 181. 
CLYPEUS MICHELINI, Wright. 
This is a rare Clypeus, specimens of which we have not 
as yet collected ourselves. 
Clypeus Michelini.—TVhere are two specimens in the Bristol 
Museum, which appear to have come from the Lower Free- 
stone. One is from Nailsworth, and the other from Leck- 
hampton Hill. Those figured by Wright in his “ Monograph” 
came from ‘‘the Freestone beds of the Inferior Oolite at 
Wall’s Quarry [overlooking the Chalford Valley, Stroud], 
and Nailsworth.” He also records two small specimens 
from Cleeve Hill—from a sandy bed in the ‘‘Zone of 
Ammonites humphresianus.” 
CLYPEUS PLOTI, auctt. 
This echinoid occurs in the upper portion of the 
Clypeus-Grit (to which it gives its name) of the northern 
portion of the South, Mid, and particularly of the North 
Cotteswolds. The farthest point south at which we have 
found it is at the Coombe Quarry, near W otton-under- 
Edge ; and the farthest point in a northerly direction, near 
the Evenlode, at Stonesfield, Oxfordshire. 
Clypeus Ploti.—it is unnecessary to give all the records of this 
species : suffice it to say that it may be found almost any- 
where in the district between Stonesfield and Wotton-under- 
Edge. 
COLLYRITES OVALIS (Leske). 
This species is rare in the Doulting-Stonesfield district, 
but common in Dorset. Wright records a single speci- 
men from the Cotteswold Hills, namely, by Mr Walton, 
“in the same zone at Charlecombe, near Bath.” By “the 
same zone” he means the equivalent to “the marly vein 
which traverses the upper ragstones of the Inferior Oolite 
