OF THE MEUX-WELL DEPOSITS. 



919 



Lower Greenland. 



Coal, fragments of lignite. 



Carpenteria. 



Oistellaria rotulata, Lam. 



aeutauricularis, Ficht. % Moll. 



Marginulina calliopsis. 



Vaginulina leguinen, Linne. 



Planularia pauperata, P. $ J. 



Planorbulina ammonoicles ? 



Saccanimina? 



Haplostiche foedissima (Lituola Sol- 



danii). 

 Marsupites, plates of. 

 Pentacrinites Fittoni. 

 Crinoid stem. 

 Asteriidee, joints of. 

 Echinidse, plates, spines, &c. 

 Serpula. 



Crustacean claws, several sp. 

 Bairdia Harrisiana, Jones. 

 subdeltoidea, Milnst. 



Cytherella compressa, Milnst. 



beyrichii, Eeuss. 



Cythere interrupta, n. sp. 



concentrica, Eeuss. 



Cytheridea perforata, Bom. 

 Diastopora, sp. 



sp. 



Polyzoa, sp. 



Entalophora. 



Spirophora ? 



Pustulopora, sp. 



Alecto dichotoma ? 



Defrancia ? or Lichenopora ? 



Terebellaria ? 



? Isastrsea Morrisii, Duncan. 



Cirripedia, several sp. 



Ehynchonella latissima. 

 Terebratula ovata ?, young. 

 Terebratula, sp. 

 Discina. 



Thecidium triangulare. 

 Zellania neocomiensis, Moore. 

 Avicula pectinata, Sow., young. 

 Exogyra Boussingaultii, UOrb. 



sinuata ? 



Lima, sp. 

 Pecten, fragments. 

 Astarte formosa, Sow. 

 Nucula impressa, Sow. 



planata, Desk. 



Tellina ? 



Potamomya? Corbula? 



Yenus parva, Mant. 



Area, sp. 



Vicaria ?, young forms. 



Cerithium ? or Potamides? 



Delphinula ? 



Emarginulina neocomiensis, UOrb. 



Hydrobia ? 



Valvata? 



Natica. 



Neritina. 



Nerinasa. 



Chemnitzia. 



Pleurotomaria. 



or Solarium. 



Turbo, sp. 



Pyrula. 



Trochus. 



Potamides ? 



Tornatella. 



Eissoa. 



Various univalves. 



The Polyzoa have been obligingly examined by Mr. Etheridge, jun. 



Extension of Generic Life. — It was scarcely to be expected that 

 from the examination of a few ponnds of material brought up from 

 a depth of 1050 ft. under London any light could be thrown on the 

 existence in time of any organic remains ; but such is the case with 

 the following genera. The Neocomian beds of this country have 

 hitherto yielded but one Thecidium , the T. Weiherellii. This genus 

 had its chief development in the Oolite. The T. triangulare is 

 one of the commonest forms, and I have shown that it ranges from 

 the Lower Lias to the Coral Rag. Eour examples of this species 

 come from the well. Like the former, I have traced the minute 

 and rare genus Zellania through the same Secondary beds, though 

 only the 40th of an inch in diameter; five specimens have occurred, the 

 interior of one showing the characteristics of this genus. Still more 

 interesting is the extension in time of one of the most remarkable 

 of the Foraminifera, the genus Carpenteria, which has hitherto 

 only been found recent in the seas of the South Pacific, the West 



