1859.] 



WEIGHT INFKRI0K OOLITK. 



11 



ever, undergo great and important modifications when examined 

 over even a limited area, — the pea-grit as regards its structure, and 

 the freestone its thickness. In the Southern Cottcswolds the pea- 

 grit loses its pisolitic character ; and in the eastern part of the hill- 

 district the freestones thin out and finally disappear, — the Inferior 

 Oolite heing represented at Stow-in-thc- Wold and at Burford by 

 the zone of Ammonites ParTcinsoni with its light-coloured ragetones, 

 filled with an abundance of specimens of Olyjpeus Plotii, Klein, and 

 forming a " Clypeus-grit." 



a. Fossils of the Pea-grit and the Freestones. — The beds A and B are 

 usually the most fossiliferous. The EchinocU rmata are well preserved 

 in the Pea-grit, and the shells of the Mollusea in the ltoestone. 

 Many of these are specifically identical with the MoUuscan fauna 

 of the Great Oolite. The shells are for the most part small ; and 

 the Anatinidoz, so abundant in the upper zones, are almost entirely 

 absent from this. 



Ammonites Murchisona?. Sow. 

 Nautilus truncatus, Sow. 

 Bclemnites spinatus, Quenst. 



Patella rugosa, Sow. 



inornata, Lye. 



Pileolus la-vis, Sow. 

 Nerita costata, Sow. 



minuta, Sow. 



Monodonta LyeUi, cTArchiac. 



sulcosa, d'Archiac. 



Natica adducta, Phil. 

 Cirrus nodosus, Sow. 

 Trochotoma carinata, Lye. 

 Turbo capitam-us ?, Goldf. 

 Troehus monilitcctus, Phil. 

 Solarium Cotswoldirc, Lye. 

 Nerincea cingenda, Bronn. 

 Actaionina Sedgvici, Phi!. 



< tetrea costata, Sow. 

 Plaeunopsis Jurensis, Itoemer. 

 Hmnitcs velatus, Goldf. 

 Limea dnplicata, Goldf. 

 Lima sulcata, Munst, 

 — — 1\ rata, MUnst. 



Lyoetti, " right, 



Ixllnln. Mr. A Lye. 



Pecten Lena '! Sow. 



a Devalquei, Oppel{P. rimineus, 



8ov<.). 



Mytilu- Eureatas, i 



strintulus, Gold, 



Modiola Ssowvrliyaiia, tPOrb. (plioata, 



8 »:). 



A\ ioola oomplicata, 8 

 ( torbala involuta, Goldf. 

 dia axmifbrmia, I 



Ar.a Pratt ii, MoT. \ 1 

 pulchra. S"'r. 



oanoellata, Phil. 



latu, Diiiik. 



Trigonia costata (var. pulla), Sow. 



exigua, Lye. 



Astarte interlineata, Lye. 



rhomboidalis, Phil. 



Splurra Madridi. cPArch. 

 Cyprina trapeziformis, Roem. 

 L'nicardium. 

 Myoconcha crassa, Sow. 

 Ceromya Bajocinna, d' Orb. 

 Bfyopau rotundata, Buchm. 

 Cardium striatulum, Phil. 



lsevigatum, Lye. 



Goniomya angulifera, Sow. 

 Pinna euneata, Bean. 



Terebratula simplex, Buchm, 



plicata, Pmk hi. 



Bubmaxillata, Davids, 



Bhynahonella Wnghtii, Dot 



deoorata, Davids, 



concinna, x»w. 



oolitioa, Davids. 



Berpula grandia, Goldf. 



convolute, Goldf. 



plioatilis, M 



qaadrHatera, Goldf. 



fliKiida. Goldf, 



( Hdarii Powleri, Wr. 

 Bouohardii, Wr. 



Wright ii, J)<.«ir. 



Bhabdociaaru Wrightii, Door, 

 Lcroaalenia Lyoettii, Wr. 

 Paeudodiadema depreasum, dg, 

 Stomeehintu mnmnana, Phi/. 

 Polycj phua Deelongohampeii, Wr. 

 Petuna Bakeri, Wr. 

 Eemipedma tetngramma, Wr. 

 perforata, n r. 



iJonii, Mr. 



• r rwminlmfaHi Phil. 



