FOSSIL CORALS. 79 



Omphyma (several species), Cyathophyllum, Halysites, 

 ZaphrentiS) Astrcza, etc. The best localities there- 

 abouts are Checkley Common, Dennington, Warslaw, 

 and Dormington (the limestone at the latter place 

 appears to be simply an ancient local coral-reef, 

 crowded with " chain-coral " and Favosites Gothlan- 

 dica ; it is wonderfully full of fossils of various kinds). 

 At May Hill there are several quarries, in which the 

 fossil " chain-coral " (Halysites catenulatus) and Favo- 



Fig. 62. HettoKtes interstinctus, a common Silurian Coral. 



sites gothlandica are abundant. The Silurian rocks of 

 the Malvern Hills are nearly everywhere plentiful in 

 fossils, although evidences of the reef-building corals 

 only occur here and there. The following are all 

 capital collecting grounds : Netherton Valley, Stones- 

 way, about Nenning's Farm, Colwall Copse, the 

 quarries along the Marthon road, Hartley, and Blais- 

 don Edge (where extensive quarrying of the Wenlock 



