346 PROCEEDINGS OF THE GEOLOGICAL SOCIETr. 



Cardium ediile. Tellina lata. 



Circe minima. obliqua. 



Corbula striata. prsetenuis. 



Cyprina islandica. Buccinum tenerum. 



Leda myalis. undatum. 



Lucina borealis. Conovulus pyramidalis. 



Mactra ovalis. Littorina littorea. 



subtruncata, Natica catena. 



Mya arenaria. Purpura lapillus. 



Mytilus edulis. Trophon antiquum. 



Nucula Cobboldite. Turritella communis. 



Pecten opercularis. Balanus crenatus. 



There are also here found remains of 



Platax Woodwardii. Raia antiqua. 



Vertebrje of fish. Balaena vertebrse. 



Mastodon teeth. 



In the Museum of the Geological Society there is, amongst the 

 specimens presented by Capt. Alexander, a rolled Coralline-Crag 

 coral from Southwold. 



There are pits at Henham and Yarn Hill, to the N.N.W. of South- 

 wold, which yield a similar but poorer group of fossils from sand- 

 beds which are also below the Chillesford Clay. 



Fossils from Tarn Hill {including Mr. Fisher's list*). 



Astarte borealis. Cerithium tricinctum. 



Cardium edule. Littorina littorea. 



Cyprina islandica. Natica catena. 



Mactra subtruncata. Guillemini. 



ovalis. Paludina lenta. 



Pinna. Purpura lapillus. 



Tellina obliqua. Eingicula buccinea. 



lata. Succinea oblonga. 



prsetenuis. Trophon antiquum. 



This completes the series of the Crag-pits in Suffolk. Those of 

 Norfolk will be described in the next part of this paper. 



Organic Remains. 

 It is evident that the organic remains of the Eed Crag must be 

 divided into two categories — the one of fossils proper to the forma- 

 tion, and the other of fossils derived from other formations. Generally 

 the extraneous fossils of any deposit are few ; but in the case of the 

 Eed Crag they constitute a very important section and require a careful 

 elimination. Mr. Searles "Wood communicated a paper to the Geo- 

 logical Society in 1859 f, in which he expressed an opinion that: — 



53 species of Testacea 1 -1,1 j • j r ii, n 



2 „ Cirripedia ^^""^ P^f.^^^^^ ^^"^'^^^ ^^^"^ *^^ ^''■ 



8 „ Zoophytes J rallme Crag. 



* Quart. Journ. Geol. Soc. vol. xxii. p. 26. 



t " On the Extraneous Fossils of the Red Crag," by S. V. Wood, Esq., F.G.S. 

 (Quart. Journ. Geol. Soc. vol. xv. p. 32). 



