FOSSIL FAUNA. 105 



PLATE XLIII. 



Fossil Corals, and other Zoophytes. 



Figs. 1, 2, 3, & 4, are representations of different aspects of a simple coral {Fungia polymorpha, 

 of Goldfuss) ; the locality is uncertain. Fig. 1, the base ; fig. 2, a magnified 

 representation of part of the same ; fig. 3, magnified view of part of the lamellated 

 surface of fig. 4. 



Fig. 5. The nature of this fossil is not obvious ; it may be a rolled Siphonia. 



Fig. 6, is a fine specimen of a Siphonia {Jerea pyriformis, of Lamouroux) . .' At both extremities 

 the apertures of the numerous tubuli are seen. 



Figs. 7, 8, & 9, are varieties of the same species of fossil sponge {Scyphia articidata, of Gold- 

 fuss), from Switzerland. 



Fig. 10. a spongite of a very peculiar form. 



Fig. 11. a spongite investing a fossil shell {Nerita), from Faringdon. 



Fig. 12, is an imperfect specimen of a Ventriculite {Ventriculites alcyonoides, of Mantell), from 

 the chalk of Wiltshire. 



Fig. 13. a calcareous spongite which has been immersed in dilute hydrochloric acid to show its 



structure. 

 Fig. 14. A pebble deriving its shape from a zoophyte apparently related to the Ventriculites 



[Spongites labyrinthieus, of Mantell). The aperture at the base has arisen from the 



decomposition of the process of attachment. 



Fig. 15. A pebble enclosing part of the base of a Ventriculite ; the circular spots on the large 

 end are sections of the ramifications of the stirps or base of the zoophyte ; for this 

 figure and the following are drawn in an inverted position. 



Fig. 16, is a similar fossil, split vertically, and showing the enclosed stem of the Ventriculite. 



