516 MESSES. WHITE AND TREACHER ON THE [Aug. 1906, 



The fossils noticed are : — 



Ostrea vesicularis, Lam. Membranipora sp. 



Kingena lima (Defr.). . Eschara Lamarcki, Hag. 



Rhynchonella sp. Vincularia cf. longicella. d'Orb. 



Terebratulina striata (Wahl.). Bairdia subdeltoidea (Miinst.). 



Clausa Francqana, d'Orb. Cytherella ovata (E-oiner). 



Crisina cenomana, d'Orb. Cidaris serrifera, Forbes. 



Crisina unipora, d'Orb. Cidaris sp. 



Entalophora virgula (Hag.). Metopaster Parkinsoni (Forbes). 



Entalophora Pergensi, Gregory. Bourgueticrinus. 



Tervia Gamblei, Gregory. Pentacrinus. 



Tervia subgracilis (d'Orb.). Porosphara globularis (Phill.). 



Biflustra variabilis, d'Orb. Porosphcera sp. 



We are uncertain as to the age of these beds, as the above 

 list of fossils from them contains nothing zonally distinctive. It 

 might be supposed that the hard bands noticed here are the equi- 

 valent of those observed at and near the base of the Actinocmnaoc- 

 quadratus Zone, and in a similar position with reference to the 

 base of the Eocene Beds, farther north ; but this idea seems to be 

 negatived by the evidence obtained a short distance to the south- 

 east. 1 



The only other beds in this district in which we have found 

 remains of Pentacrinus and an abundance of bryozoa are of Micraster 

 cor-anguinum-Sige. These are described below [Pit (u), p. 517]. 



At the point lettered (r), about 150 yards south-east of Iremon- 

 ger's Cottages, there is a surface- exposure of soft white chalk (the 

 debris of which is mixed with very numerous green-coated flint- 

 nodules and small green flint-pebbles), at the boundary of the 

 Heading Beds. This contains small fish-remains and a few brown 

 coprolites, and has yielded the following larger fossils : — 



Ostrea vesicularis (?) Lam. TJintacrinus. 



Eschara Lamarcki, Hag. Porosphcera patelliformis, Hinde. 



Here then, at a distance of a little more than two- 

 thirds of a mile south of Rowhedge, we again find the 

 Uiiitacrinus-Beds in contact with the Reading Series, 

 the higher Chalks, intercalated between them in the 

 interval, having disappeared. 



Still farther south, the Uintacrinus-Challs. itself is cut out, or 

 very nearly so ; for small pits at Broomclose Border, south-east of 

 Basing's Farm, and little below the basal plain of the Eocenes, 

 show normal flinty chalk of ' cor-anguinum' aspect. (See section, 

 fig. 4, p. 510.) 



(s) Pit 1 furlong' east of B oxford Rectory. 

 This is a little working showing a few feet of soft white chalk, 



[Wben the Geologists' Association visited the district shortly after the 

 reading of this paper, Mr. A. C. Young found a well-granulated guard of 

 Actinocamax granulatus in one of the surface-blocks of hard chalk a little to 

 the west of the cottages. It is probable, therefore, that part, at least, of the 

 rocky beds here belong to the zone of A. quadratics, and that the local suc- 

 cession is the same as that at the places marked (m), (n), (o), & (p).] 



