ANTHOZOA—TETRACORALLA. 



67 



XV. Campophyllum E. & H. 

 Differs from Cyathophyllum, in that the septa stop short some 

 distance from the center. The central area with well developed 

 tabulae, the interseptal space with dissepi- 

 ments. Dev.-Carb. 



36. C. torquium (Owen). (Fig. 101.) 



Middle Carbonic. 



Cylindrical, often very long (9 inches or 

 more) and abruptly bent. Epitheca very 

 thin generally denuded. Calyx deep with 

 a moderate fossula, principal septa extend- 

 ing one half to two third distance to cen- 

 ter, secondary ones very short. 



In the coal measures of Illinois, Iowa, 

 Kansas, Missouri and Nebraska. 



FlG. 102. Heliophyllum 

 Aai/i{Ya\., N. Y.). 



XVI. Heliophyllum Hall. 

 Like CyathophyllumJowX. the septa with transverse plates or carinas 

 which are few and weak in young or primitive species, but numer- 

 ous and strong in others. A fossula is frequently developed. Dev. 



Fig. 103. Heliophyllum confluens. 



