﻿412 



FOREIGN JURASSIC PYGURUS. 



Pygurus Jurensis, Marcou. Mem. Soc. Geol. de France, 2 de serie, torn, iii, p. 114. 



" Test dilated, and rostrated ; summit excentral ; ambulacral areas large, extending 

 petaloidal almost to the border; under surface much undulated; anal opening infra- 

 marginal." Desor. 



Formation. — " Portlandien superieur (Virgulien) de Suziau pres Salins, des environs 

 de Morteau, Gray, Haute-Saone. 

 Portlandien moyen (Pterocerien moyen) de Montbeliard." Desor. 



Collections. — MM. Marcou, Thurmann, Jaccard, d'Orbigny. 



