3+3 
PETRIFACTIONS, 109. Helmintholithus. 
20. The Madrepora mufiicalis. . 
Iluidlithoph. Brit. iah.Zt,. fig. ■iOi,. 
In England, Francci Bohemia, and the Mtberlands. 
zi. The Madrepora divergens. 
In Egypt. 
2Z. The Madrepora csefpitofa. 
In Derby/hire, Switzerland, Au/tria and various parts of Germany, 
in marble or flint, 
23. The Madrepora flexuol'a. 
In Derbyjhire. 
24. The Madrepora fafcicnlaris. 
On an American ifland oppofite Caracae. 
2j. The Madrepora pe£linata. 
In Silefia, and upper Burgandy, 
26. The Madrepora tubularis. 
27. The Madrepora mamillaris. 
In the Netberlandi and Burgandy. 
28. The Madrepora patelloldes. 
29. The Madrepora globularis. 
30. The Madrepora Filum. 
Near Badl in Switzerland. 
31. The Madrepora vermicularis. 
In Silefia and Switzerland, 
32. The Madrepora arachnoides. 
In the Netherlands, Wirtemberg, and upper Aufiria. 
33. The Madrepora undulata. 
34. The Madrepojra Monile. 
Near Djidda in Egypt. 
35. The Madrepora Porites. 
In Sweden, Silefia, and France. 
36. The Madrepora damicornis. 
in Carniola and Upper AuRria. 
37. The Madrepora muricata. 
In Gothland mi Silefia, marmoreous. 
38. The Madrepora faftigiata. 
In Silefia and upper Aufiria, marmoreous. 
30, The Madrepora ramea. 
In the di'pi of iVirtemburg, filiceous or marmoreous. 
