PETRIFACTIONS. 109. Helmintholithus. 347 
7. The Atcyonium Ficus. 
In the Netherlands. 
8. The Alcvonium gelatinofum. 
In the Wejtphalian circle of Germany. 
Speng'a. The Spongia or fponge. 
I. The Spongia crateriformis ? 
Near Paffraih in S-iuitzerland. 
z. The Spongia Tupha? 
In Franconia. 
^scharite’, Thc Flllftra. 
In iict Netherlands, Franconia, Switzerland, of fandftone or 
calcareous. 
1. Porous on both fidcs. 
a. The Fluftya foliacea. 
b. The Fluftra truncata. 
Both in llejje. 
c. The Fluftra pilofa. 
In the Netherlands and the Dutchy of Montano. 
d. The Fluftra lutofa. 
At Bajil in Switzerland. 
2, Porous on one fide only. 
In Gothland, mafraoreous. 
’1 uhularitf. The Tubularia. 
In Gothland and Switzerland, ^armpreoui or arenartous. 
I. The Tabularia indivifa. 
Corallines. The Corallitia. 
In Bohemia and Venice, the impreffion. 
1. The Corallina corniculata. 
2. The Corallina barbata. 
Sertulariee. The Sertularia. , ■ • /r 
la France und tVt Netherlands, the unprelfion. 
PennatuU. The Pennatula or fea-pen. 
1. The Pennatulaphofphorea. „ ^ , 
In the Netherlands and on mount Balao tp Verona, the impreffion. 
Xx 2 
