270 



PROCEEDINGS OF THE GEOLOGICAL SOCIETY. 



TFeb. 5, 



(like the many other extreme variations in the beds of the forma- 

 tion) to local and exceptional conditions. 



Many years ago, in the carrying out of some agricultural drainage 

 works in fields immediately west of the old quarries, a shallow 

 trench was excavated in the Barnack Rag ; from which source, Mr. 

 Bentley and I obtained rock specimens, and numerous, generally 

 minute, but frequently well-preseiwed, fossils. 



From Walcot, a hamlet to Barnack, I obtained years ago, a fine 

 and exceptionally symmetrical specimen of Coral — Thamnastra>a 

 concinna, Edw. & Haime ; probably an undescribed variety*. 



Fossils from the " Barnack Rag," Barnack. 



Anomia (Placunopsis) semistriata, 



Bean. 

 AviculaBraamburiensis, Phil. 



echinata, Sow. 



Gervillia ornata, Lycett. 

 Gryphaea mima, Phil. 

 Hinnites velatus, Goldf. sp. 

 Lima bellula, Mor. Sf Lye. 



cardiiformis, Mor. § Lye. 



duplicata, Sow. 



gibbosa, Sow. 



Pontonis, Lycett. 



semicircularis (?), Goldf. 



Ostrea nabelloides, Lam. 



gregaria, Sow. 



sulcifera, Phil. 



, sp. ? 



Pecten aratus, Waagen. 



articulatus, Schloth. 



lens, Sow. 



■ personatus, Goldf. 



vagans, Sow., yar. peregrinus, 



Mor. $ Lye. 

 Perna quadrata, Phil. 

 Pteropema plana, Mor. §■ Lye. 



Area semula, Phil. 



Prattii, Mor. § Lye. 



pulcbra, Sow. 



Astarte elegans, Sow. 



■ fimbriata, Walton, M.S. 



minima, Phil. 



Pontonis, Lycett. 



, sp. ? 



Cardium incertum, Phil. 

 Cypricardia, sp. ? 

 Cyprina Loweana, Mor. <f- Lye. 

 Cytherea (Cyprina) dolabra, Phil. 

 Lucina crassa, Sow. 



despecta, Phil. m 



Macrodon Hirsonensis, d'Arch. 

 Mytilus lunularis, Lycett. 

 Opis lunulatus, Sow. sp. 



Opis similis, Besh. (or new sp. ?). 



smooth new sp. ? 



Tancredia, sp. ? 



Trigonia costata, Park., yar. pullus, 



Mor. 8f Lye. 

 Unicardium depressum, Mor. fy Lye. 



parvulum, Mor. fy Lye. 



varicosum, Sow. 



Rhynehonella Crossii, Walker. 



quadriplicata, Ziet. 



spinosa, Schloth. sp. 



(young form). 



Terebratula fimbria, Sow. (young). 



perovalis, Sow. 



simplex, Buckm. 



sub-maxillata, Sow. 



Actaeonina parvula, Boiner, sp. 



, sp. ? 



Alaria armata, Mor. 8[ Lye. 



hamulus, Beslong. sp. 



hamus, Beslong. sp. 



trifida, Phil. sp. 



Ceritella acuta, Mor. §• Lye., var. 



parvula, Bonier, sp. 



, (like Sowerbyi, Mor. 8f Lye.) ? 



Cerithium Beanii, Mor. 8f Lye. 



, sp. (like costigerum, Piette) ? 



gemmatum, Mor. §• Lye. 



limieforme (?), Bbmer. 



quadricinctum, Goldf. 



strangulatum, d'Arch. 



> S P- ? 



Chemnitzia WethereUii, Mor. 8; Lye. 

 Cylindrites brevis, Mor. $• Lye. 



bullatus, Mor. §• Lye. 



cylindricus, Lycett. 



turriculatus, Lycett. 



, sp. ? 



Delphinula alta (?), Mor. # Lye. 



(Crossostoma) Prattii, Mor. 6 



Lye. 



* See description of this specimen by Professor Duncan, F.R.S., in discussion 

 at the conclusion of this Paper. 



