326 Reviews — A. H. Foord's Catalogue of the Cephalopoda. 



Staffordshire, is a distinctly ribbed species most nearly allied to 

 Trochoceras mirandum, Barrande. 



In Vol. I. of the Palgeontology of New York, Hall described and 

 figured under the name Lituites undatus specimens which, according 

 to Mr. Foord, belong to two distinct genera. Prof. Hyatt referred 

 them to the genus Trocholites, but Mr. Foord considers that some 

 belong to the genus Trochoceras, and to these he has given the name 

 Trochoceras Ealli, 



By far the greater part of the volume is occupied by the Nautilides, 

 the following genera and subgenera being treated of: — 



Trocholites, Conrad. 

 (?«/> oceras, de Koninck. 



Subgenus Aipoceras, Hyatt. 



Subgenus Trigonoceras, M'Coy. 

 Ifercoceras, Barrande. 

 JBarratideoceras, Hyatt. 

 Disci fes, M'Coy. 



Subgenus Phacoceras, Hyatt. 

 Bphippioceras, Hyatt. 

 Calonauiikis, Foord. 

 Fleuronnutilus, Mojsisovics. 

 Temnocheilns, M'Coy. 



Subgenus Centroceras, Hyatt. 

 Solenocheilus, Meek and Wortben, emend. Hyatt. 

 Nautilus, Breyn. 



Subgenus Hercoglossa, Conrad, emend. Meek. 



Subgenus Glydonautilus, Mojsisovics. 

 Aturia, Bronn. 



No new species is added to the genus Trocholites, but a new 

 species of Gyroceras, " closely allied to Gyroceras ornatissimum, de 

 Koninck, sp.," is described from the Carboniferous Limestone of 

 Ireland under the name Gyroceras Mbernicum, and upon a single 

 specimen from the same horizon and locality is founded a new 

 species of the subgenus Aipoceras, viz. A. compressum. 



Prof. Hyatt included in Barrande's genus Hercoceras such forms 

 as Gyroceras aJatnm, Barr., and Trochoceras flexum, Barr., in which 

 the apertures are not contracted, but Mr. Foord restricts the genus 

 to species which have the aperture peculiarly contracted, as in 

 Hercoceras mi^-um, Barr., thereby retaining JT. mirnm (with its variety 

 irregulare) as the only known species of the genus. 



In addition to the two well-known British species, which fall into 

 the genus Ephippioceras, viz. Nautilus clitellarius, J. de C. Sowerby, 

 from the Coal Measures of Shropshire and Worcestershire, and 

 Nautilus bilobatus, J. Sowerby, from the Calciferous Sandstone of 

 Closeburn, Dumfriesshire, the author describes under the name 

 costatum a new species, which occurs in association with iV^ 

 clitellarius. 



The name Goelonautilus is comparatively new. The first mention 

 i of it seems to be in an exceedingly interesting paper which appeared 

 in the Geological Magazine for November, 1889 (p. 494), by 

 A. H. Foord and G. C. Crick, " On the Shell-muscles of Goelonautilus 

 cariniferus, J. de C. Sowerby, sp.," in a footnote to which paper it 

 is stated that " this name from ko7\ov, hollow (referring to the 



