17 
Fig. 4. 
RADIATES. 
Polyps 
Cyathophyllum Family 
Favosites, of the Madrepore Tribe. .. 
Halysites 
Oculina Tribe 
Astram Tribe 
Aealephs , 
Graptolites , 
Chmtetes 
Echinoderms 
Cystideans 
Crinideans 
Elastideans (Pentremites, etc.) 
Star-fishes 
Pakechinoids (including Archteocidaris), 
Cidaris, Spafcangids, etc 
MOLLUSKS. 
Itr&chiopods 
Lingula Family, gen. Lingulella. 
Obolus, Obolella 
Discina Family, gen. Discina 
Siphonotreta 
Ortbia Family, gen. Orthis 
Lepteena 
Strophomena 
Rhynchonella Family, gen. Rhynchonella, 
etc 
Pentamerus 
Camarophoria 
Productus Family, gen. Chonetes 
Productus 
Spirifor Family, gen. Atrypa 
Spirifer 
Athyris 
