288 PALEONTOLOGY. 



Begins with an examination of the age, position, sequence, and 

 nomenclature of the Post- tertiary deposits of Scotland which have either 

 yielded Ostracoda or are related to beds containing their remains. The 

 term " Boulder Clay " is defined ; and it is pointed out that certain 

 Boulder Clays are fossiliferous, and contain a more or less arctic fauna. 

 Various fossiliferous deposits, not Boulder Clays and not postglacial, 

 are next considered, under the heads : — (1) fossiliferous beds imme- 

 diately beneath the Boulder Clay, either prseglacial, interglacial, or 

 glacial, and not having any Boulder Clay for their base ; (2) fossiliferous 

 beds intercalated between masses of Boulder Clay; (3) fossiliferous 

 clays, sands, and gravels with a more or less intensely arctic fauna ; 

 (4) clays and sands, with an arctic fauna, either immediately overlying 

 unfossiliforous Boulder Clay, or separated from it by a thin seam of 

 laminated clay. The various Ostracodiferous deposits of Scotland are 

 next reviewed ; and a section is devoted to the general sequence of the 

 Post-tertiary beds of Scotland. The authors then describe the Post-ter- 

 tiary deposits of England and Ireland, which had been examined by 

 them for Ostracoda. The classification of the Ostracoda is treated of, 

 in connexion with a table giving the characters of the genera as derived 

 from a study of the carapace, and a synopsis of the genera, based upon, 

 the anatomical characters of the animal. The introductory part con- 

 cludes with a summary of the facts known as to the distribution of the 

 Post-tertiary Ostracoda, and a bibliography of the works referred to in 

 determining the synonymy of the species. 



The rest is occupied with descriptions of 133 species of Ostracoda, 

 recognized by the authors as occurring in the Post- tertiary deposits of 

 Great Britain. The following new species are described — Aglaia (?) 

 glacialis, Bairdia (?) camhrica, Cythere deflexa^ C. cribrosa, C. Cluthce, 

 C. Hoptonensis, Limnicythere (?) antiqua, Cytheridea (?) inomata, 

 Krithe glacialis, Cytherura pumila, C. concentrica, 0. (?) complanata^ C. 

 compressa, Cytheropteron arctmium, C. hiflatum^ C. montrosiense, Bytho- 

 cythere elongata, Oytherideis suhspiralis, Paradoxostoma(^) pyriforme, 

 P. tenerum, and Bosquetia rohusta. The new genus Bosquetia is de- 

 scribed, and is provisionally referred to the Cytherellidae. The mono- 

 graph concludes with a table, illustrating the distribution of the 

 Ostracoda over Post- tertiary localities. H. A. N. 



Brady, HeiJey B. On a true Carboniferous Nummulite. Ann. Nat. 

 Hist. ser. 4, vol. xiii. pp. 222-230, pi. xii. Translated in ' Tra- 

 ductions et Reproductions publiees par la Societe Malacologique de 

 Belgique.' 

 After discussing the views of other authorities as to the distribution 

 in time of the genus Nummidina, and pointing out that various palaeon- 

 tologists had given in their adhesion to the existence of Prae-tertiary 

 Nummulites, the author describes a Nummuline fossil from the Car- 

 boniferous Limestone of Nainur. The name NninmuUna pristma was 

 given to this fossil ; and the author concludes that there could be no 

 doubt as to its being a genuine Nummulite. It forms minute convex 



