HETEROPORA. 



205 



FOREIGN : 

 ? Callovian : Mauoourt, Meuse (fide Buvignier) ; Sternberg, Bohemia (fide 



Bruder). 

 Bathonian : Ranville, Bernieres, Calvados ; Longwy, Moselle (fide Terquem) ; 



Buchsweiler and Niederweiler (fide Schlippe) ; Egger (fide 



Quenstedt) . 

 Bajocian : Montvaux and Genivaux, near Metz (fide Friren) ; Flace, etc. , 



Saone-et- Loire ; Pommer, Franconia (fi de Waagen) . 



Description of Figures. PI. XI. Fig. 1. Zocecia and mesopores, 

 X 22 dia. Inferior Oolite. Loc.? Holl Coll. B. 4881. Fig. 19. 

 Longitudinal and transverse sections, X 12 dia. Inferior Oolite. 

 Holl Coll. B. 4885. Fig. 20. Two parts of same zoarium, 

 showing varying arrangement of mesopores, X 12 dia. Bathonian : 

 Ranville. D. 2209. 



FIG. 19. Sections through Heteropora conifera (Lamx.) . x 12 dia. Fig. 19a: 

 Longitudinal section through marginal zocecia, showing diaphragms 

 and mesopores. Fig. 19i : Transverse section through central zooscia. 

 Inferior Oolite. B. 4885. 



FIG. 20. Two parts of same zoarium of Heteropora conifera (Lamx.), to 

 show irregularity in distribution of mesopores. x 12 dia. Bathonian 

 Calcaire a polypiers. Ranville. D. 



