INOCERAMUS. 277 



as 7. fJrippxi, Mantel], and tliat idnitification lins l)oen accepted by many later 

 writers. The type of I. Crippsi came from the Chalk Marl (zone of Schhimharhia 

 varians). From a study of a cast of the type, Petrascheck and J. Bohm^ came 

 to the conclusion that the Senonian species is quite distinct from /. Crippsi, and 

 Bohm has named the former 7. halHcus. liohm also supports the view first 

 suggested by Messrs. E. T. Newton and A. J. Jukes-Browne, and confirmed by 



\ 



\ 



Fig. 35. — Inoceranms Crippsi, Mantell. Upper Greensaml, Haldon. Right valve. British Museum (Xat. 



Hist.), No. L17201. Natural size. 



Petrascheck, that 7. Jatiis of Goldfuss and of d'Orbigny (but not of Mantel!) is 

 identical with 7. Crippxi, IMantell. After a careful study of the type and other 

 similar sj)ecimens of 7. Crippsi, and of si)eciiiiens of 7. latnx, I can fully support 

 these conclusions. 



7. cinicifonnis, d'Orbigny,' is allictl to 7. Cvipp.^i, hui. is relatively higher. One 

 specimen found in the Up})er Greensand of Warminster (Plate XLV II I, fig. ■^), 



1 ' Subhercyn. KreitKinul.lc ■ (1909), pj.. 41—4(3; PitiasiLeik, "luoceram. a. d. Gosau." • Jahib. 

 (1. k. k. geol. Rcichsanst.,' vol. hi (1906), p. 155. 



- ' Pal. Franc. IVrr. Cii't.,' vol. iii (184C), p. 512, pi. cccevii. 



37 



