318 PALEONTOLOGY. 



these, a number of new forms of previously named species are described. 

 Under the heading " Eesultate " the author gives his views respecting 

 the equivalence of the beds yielding the fauna described, and as to 

 variation and descent, the latter being further elucidated in Plate x., 

 where the. relationship of the various species of Vivijxira is shown 

 diagrammatically, the original stem being represented by V.achatinoides 

 and V. Neumayri. G. A. L. 



Nicholson, Prof. H. A. Eeport upon the Palaeontology of the Pro- 

 vince of Ontario. Printed by Order of the Legislative Assembly. 

 Pp. 96; 4 plates and 45 woodcuts. 8vo. Toronto. 



This report is a continuation of one published in 1874 [see Geolo- 

 gical Record for 1874, p. 317], and contains an enumeration of 200 

 species of fossils from the Trenton Limestone, Utica State, Hudson 

 River formation, Niagara Limestone, Guelph formation, Corniferous 

 Limestone, and Hamilton formation of W. Ontario. Many of the 

 species are simply referred to by 'name ; but descriptions, generally ac- 

 companied by figures, are given of all new species, as well as of those 

 which have not been previously thoroughly examined, or described in 

 readily accessible works. The new species are — Ptilodictya falciformis 

 (Trenton Limestone), Favistella calicina (Hudson River Group), Dip- 

 lograj)Sns Hudsonicus (Hudson River Group), Callopora minutissima 

 (Hamilton formation), Stromatopora iiulliporoides (Hamilton formation), 

 and Spirorhis spimdiferus (Hamilton formation). A number of species 

 are for the first time enumerated as occurring in the Palaeozoic deposits 

 of Canada. H. A. N. 



. Notes on the Gasteropoda of the Guelph Formation of Canada. 



Quart. Journ. Geol. Soc. vol. xxxi. pp. 543-551, pi. xxvi. 

 Gives descriptions and figures oi Murcliisonia Loganii, M. turritiformis^ 

 M. macrosjnra, M. hivittata, M. (?) Imigispira, M. Vitellia, M. Hercynia^ 

 M. sp., Cydonema (?) elevata, Holopea Guelphensis, H. Gracia, Subidites 

 ventricosus^ Pleurotomaria solarioides, and P. sp. Murcliisonia Boylei, 

 and Holopea (?) occidentalis are described as new species. H. A. N. 



Descriptions of New Species of Cystiphyllum from the Devo- 



nian Rocks of North America. Geol. Mag. dec. ii. vol. ii. pp. 



30-33, pi. i. 

 Describes the following new species : — C. Ohioense, from the Corni- 

 ferous Limestone of Columbus, Ohio ; C. squamosum, from the same 

 locality ; C. fruticosum, a singular compound form from the Corniferous 

 Limestone of W. Ontario ; and C. superbum, from the Hamilton for- 

 mation of Ontario. H. A. N. 



. Descriptions of New Species and of a New Genus of Polyzoa 



from the Paleeozoic Rocks of North America. Geol. Mag. dec. ii. 

 vol. ii. pp. 33-38, pi. ii. 

 Founds the genus Heterodictya for the reception of a singular Poly- 

 zoon (iT. gigantea) from the Corniferous Limestone of W. Ontario. 



