308 DR. L. F. SPATH ON [vol. lxxix, 



Even supposing that the virgatus beds of Russia represent a 

 condensed deposit, comprising several hernerae of the virgatus and 

 pallasianus zones of the table (p. 304), the Graspedites zones 

 would not be higher than the Upper Kimmeridgian, if Blake's 

 sequence is to be trusted. It may also be mentioned here that 

 Virgatites miatschTcoviensis which was taken \>j Salfeld as the 

 index-fossil of the zone below the virgatus zone, shows the closest 

 resemblance to the forms of the group of Epivirgatites nihitini. 



It is clear tbat more information is required before we can 

 correctly place the ' Aquilonian ', or accept the distinctness of the 

 boreal province, still maintained by H. Salfeld 1 who, however, 

 claims isolation, not the existence of climatic zones, to be the cause 

 of the differentiation of faunas. 



As regards the Cretaceous beds with Subcraspedites of the 

 plicomplialus-stenomplialus group, such as the Spilsby Sandstone, 

 from which a form compared to the Aquilonian Grasped it es nodiger 

 (Eichwald) has been recorded, 3 they will be dealt with in a 

 forthcoming paper on the succession at Speeton. 



(5) Summary of New Names. 



Discamphiceras, gen. nov. (p. 288). 



Genotype : JEgoceras Icammerkerense (Giimbel) Wsehner. 

 Paradasyceras, gen. nov. (p. 29i). 



Genotype : Phylloceras uermbsense (Herbich) Wsehner. 

 Parodontoceras, gen. nov. (p. 305). 



Genotype : Hoplites callistoides (Behrendson) Steuer. 

 Protacanthodisctjs, gen. nov. (p. 305). 



Genotype : Hoplites andresei Kilian. 

 Stjbsteueroceras, gen. nov. (p. 305). 



Genotype : Odontoceras hceneni Steuer. 

 Eiasanites, gen. nov. (p. 306). 



Genotype : Hoplites rjasanensis (Lahnsen) Bogoslowsky. 

 Pseudogarnieria, gen. nov. (p. 307). 



Genotype : Oxynoticeras undulato-plicatile Stchirowsky. 

 Proleofoldia, gen. nov. (p. 307). 



Genotype : Hoplites kurmyschensis Stchirowsky. 

 Tragopfiylloceras radstockense, nom. nov. (p. 293). 



—Mgoceras loscombi Wright, pars, non Sowerby. 

 Aidacosphinctoides uhligi, nom. nov. (p. 299). 



= Aulacosphinctes torquatus Uhlig non Sowerby sp. 

 Aulacosphinctoides marshalli, nom. nov. (p. 299). 



= Perisphinctes sp. Bcehm. 



1 ' Die Zoogeographische Stellung des Suddeutschen Oberen Juras ' 

 Zeitsehr. Dentsch. Geol. Gesellsch. -vol. lxv (1913) Monatsber. pp. 441-48; 

 also ' Das Problem des Borealen Jura & der Borealen TJnterkreide ' Centralbl. 

 f. Min. &c. 1921, pp. 169-74. 



2 J. Pringle, ' Palteontological Notes on the Donnington Borehole of 1917 ' 

 Summary of Progress of the Geol. Surv. for 1918 (1919) App. iii, p. 50. 



