158 PROCEEDINGS COTTESWOLD CLUB 1908 
IV.—GEOGRAPHICAL DISTRIBUTION. 
(1) forms common to both districts—These include 
the following nine species :— 
ACROSALENIA SPINOSA, Agasszz. 
CIDARIS BOUCHARDI, Wr2ght. 
CIDARIS WRIGHTI, Desor. 
CLYPEUS AGASSIZI, Wrght. 
COLLYRITES OVALIS (Leske). 
(GALEROPYGUS AGARICIFORMIS (Wrighz). 
HOLECTYPUS DEPRESSUS (Leske). 
HOLECTYPUS HEMISPHARICUS (Agasszz). 
HYBOCLYPEUS GIBBERULUS, Agasszz. 
MAGNOSIA FORBESI, Wreght. 
PSEUDODIADEMA DEPRESSUM .( Agasszz). 
Crdaris Bouchard, according to Wright, occurs in the 
post-Garantzane beds of Dorset." It has been found by 
one of us (L.R.) in the Doulting Beds of Vallis Vale, near 
Frome, Somerset.” In the Cotteswold Hills it occurs at 
two horizons, namely, the Pea-Grit (M/urchzsone), and the 
Upper Coral-Bed (77wellez). This species will be dealt 
with later in section (3). 
Crdaris Wrightt is fairly common in the Pea-Grit 
around Cheltenham. The only record of it from beds of 
the Dorset type is by Mr Charles Upton, who obtained a 
specimen from Dundry Hill, near Bristol. 
Galeropygus agarictformis occurs plentifully in the 
Pea-Grit in the neighbourhood of Cheltenham, and also— 
according to Wright—very abundantly “in the lower 
ferruginous beds of the Inferior Oolite,”’* that is, the 
Scissum-Beds. A specimen of the conical variety has 
been obtained by Mr J. W. Tutcher from what are pro- 
bably beds of hemera Murchisone, near Sherborne, Dorset. 
rt “A Monograph on the British Fossil Echinodermata from the Oolitic Formations. 
Pal. Soc., p. 38. 
2 Quart. Journ. Geol. Soc., vol. Ixiii. (1907), p. 401. 
3 “A Monograph on the British Fossil Echinodermata, etc.,” p. 295. 
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