[DAWSON ] 



FOSSIL SPONGES 



Trans. 1890. Sec. IV.— Plate. III. 



Fig. 11. 



Fig. 9. 



Fig. 10. 









Fig. 12. 



Fig. 9.— Portion of Pcdaosaccus Daivsoni. 



Fig. 10.— Slab with small specimen of Hyalostelia Metissica at (a). Protos230ngia cyathi- 

 ormis at (b) and fragment of Cyathophycus at (c). 



Fig. li.—Acunthodictya hispida. Fragment of small specimen, partly encrusted with pyrite. 

 Fig. 12.— Debris of Protospongia. (All natural size.) 



127 



