NO. 2.] DESCRIPTION OF THE FOSSILS. 53 



the Bajocien of Feuguerolles (Calvados) are now before me, are confined to 

 the following points: 

 1. In our form, the joints are considerably longer and less incurved in the 



interpetalous regions ; 



%. The interarticular pores in Pentacrinus bajociensis are broader than in 

 our stem-fragment. 



I am not able to determine with certainty whether these differences are 

 specific, and not merely individual, or whether they are only to be attri- 

 buted to the fact that the stem-fragment here figured corresponds to an- 

 other region, more distant from the calyx than those described from 

 Pentacrinus bajociensis and fragments of which are before me. Doubt- 

 less in Pentacrinus bajociensis, as in all Pentacrinus species, the joints 

 farther from the calyx are longer, less incurved, and thus more similar 

 to the fragment described from Cape Flora. 



Our piece differs from Pentacrinus Nicoleti, Desor 1 , a species from the 

 Bathonian, closely allied to Pentacrinus bajociensis, in the considerably larger 

 dimensions of the corresponding parts of the stem, situated far away from 

 the calyx, and accordingly analogously formed, in the more prominent inflation 

 and carination of the joints, and in the less slender petalous furrows. The 

 formation of the interarticular pores of some of the pieces of Pentacrinus 

 Nicoleti 2 figured by P. de Loriol, is the same as that of the above-described 

 fragment of Pentacrinus sp. ex. aff. bajociensis (d'Orb.) P. de Loriol; in 

 other pieces it is different. 



VERMEb. 



SERPULA, Linne. 



Serpula flaccida, Goldf. 



182634. Serpula flaccida. A. Goldf uss, 'Petrefacta Germnniae', 1. p. 25 4. 



pi. LXIX. fig. 7. 

 1856. F. A. Quenstedt, 'Der Jura.' p. 393, (S. gordialis 



s. p.) pi. 53, fig. 16. 

 186568. E. d'Eichwald, 'Lethaea Rossica. Per. moy.' vol. 



II. p. 269, pi. XVIII. fig. 13. 



1 P. de Loriol, 1. c. p. 165, pis. 154161. 



a P. de Loriol, 1. c. pi. 157, fig. 3b, pi. 158, fig. Ib. 



