186 PROCEEDINGS COTTESWOLD CLUB 1908 
the CZyfeus-Grit in the Mid and North Cotteswolds being 
indivisible ; but in the South Cotteswolds typically separ- 
able into Rubbly Beds, White Oolite, and CZypeus-Grit. 
In the Bath-Doulting District they comprise the Upper 
Trigonza-Grit, Dundry Freestone, Upper Coral-Bed, 
Doulting Stone, Axabacza-Limestones, and Rubbly Beds 
—the last three subdivisions, collectively designated the 
‘“Doulting Beds,” being comparable with the CZyfeus-Grit 
of the Mid and North Cotteswolds. At Dundry Hill the 
“Top-Beds” comprise the Upper Z7zgonza-Grit equivalent 
of the western end of the hill, and the Maes-Knoll Con- 
glomerate-Bed of the eastern, the Upper Coral-Bed (the 
‘“* Coralline-Beds ” of Messrs Buckman and Wilson), while 
in the “ Barn’s-Batch Beds” we have most likely the 
equivalents of the Doulting Stone and Azxadbacza-Lime- 
stones. In the South of England the term “ Top-Beds ” 
has been used in a slightly different sense,’ having been 
applied to the 77wedler and post-77wed/er Inferior-Oolite 
deposits only, and not inclusive of the deposit of Garan- 
tiane hemera. In some parts of Dorset and Somerset, 
however, the “ Top-Beds” include limestones equivalent 
to (Fullers’-Earth) clays in others; and the same remark 
applies to the opposite side of the Channel. 
There is little doubt that Holectypus depressus and 
HT. hemisphericus indicate contemporaneous deposits, and 
it is interesting to find so far south as Doulting the Cot- 
teswold type, 1. depressus, abounding in the Rubbly Beds. 
As has been pointed out, the Dorset form, //. _ hemz- 
sphericus, has migrated far beyond Doulting, and isolated 
specimens are occasionally recorded from the neighbour- 
hood of Cheltenham. 
Clypeus Plotz is the most characteristic fossil of the 
Mid, and particularly of the North Cotteswolds. It 
1 Proceedings Dorset Nat. Hist. and Antiqu. F, C., vol. xiv 893), pp. 37-43: 
