. FOSSIL ZOOPHYTES OF FARINGDON. 229 
fungrformis) is abundant in the gravel-pits, and well known 
_to the quarrymen as “ petrified salt-cellars.” 
 Tracos. Lign. 72, fig. 1.—These turbinated sponges are 
readily distinguished from the preceding, by the relatively 
Lien. 72. Fossit ZOoPHYTES; nat. 
Greensand. Faringdon. 
Fig. 1.—TRAGOS PEZIZA. 
2.—Probably CHENENDOPORA in a young State. 
38.—VERTICILLIPORA ANASTOMOSANS. 
4,—Species of Scyputa. 
5.—Tracos FARINGDONIENSIS. 
Re ee ee 
large oscula, or open papilla, disposed irregularly on the 
inner surface; as shown in the specimen, fig. 1. Their 
tissue is dense and fibrous. The fossil represented by jig. 5, 
_ though named Z’ragos by collectors, appears to differ in the 
structure of the inner surface from the type of this genus: 
it is a remarkably beautiful species.* 
The base in all these Greensand sponges is flat and 
a 
ee 
8 Su 
* It may be convenient to distinguish it as 7. Faringdoniensis. 
