io6 



NORTH AMERICAN INDEX FOSSILS. 



145. E. elaborata (Conrad). (Fig. 174.) Eocenic. 

 Conical with elliptical section ; finely perforated, costse trifur- 



cating upwards. No epitheca. Spongy columella, and thin anas- 

 tomosing septa ; wall spongy. 



In the Chickasawan beds of Maryland, Virginia and Alabama. 



LXI. Endopachus Lonsdale. 



Corals with the general form of Flabellum y but with the porous 

 wall structure and septal arrangement of Eupsammia. Lateral wings 

 often developed. A compressed spongy columella occurs. Tertiary. 



146. E. maclurii (Lea). (Fig. 175.) Eocenic. 

 Cuneate, with subparallel margins, sides and ends rounded. 



FlG. 175. Endopachus maclurii (after Vaughan). 



Lateral wings well developed. Columella narrow and elongate in 

 long axis of corallum ; very vesiculate. 



In the Claibornian and Jacksonian beds of Alabama, Mississippi, 

 Louisiana and Texas. 



