2 The Ame? 
Diphyphyllum simcoense 
Orhoceras faculum 
Strophodonta nacrea 
Syringopora perelegans 
Syringostroma densum 
Zaphrentis nitida 
Acrophyllum oneidaense 
Alveolites subramosus 
Atrypa hystrix 
Aulacophyllum convergen 
Aulacophyllum princeps 
Blothrophyllum promissur 
Centronella hecate 
Chonophyllum vandum 
Cladopora pinguis 
Cladopora robusta 
Clisiophyllum ohioense 
Callonema imitator 
Cyathophyllum clintonensi 
Cyathophyllum cornicula 
Cyathophyllum impositum 
Cystiphyilum ohioense 
Favosites canadensis 
Favosites limitaris 
Orthis iowensis 
Platyceras carinatum 
Pleurotomaria hebe 
Phillipsastrea gigas 
Spirifera fimbriata 
Spirifera gregaria 
Spirifera varicosa 
Strophodonta hemispheric; 
Terebratula elia 
Zaphrentis compressa 
Zaphrentis exigua 
Zaphrentis prolifica 
Zaphrentis wortheni ' 
1 For a portion of this list of spec 
can Naturalist. [Api 
Leperdita cayuga 
Productella subaculeata 
Syringopora nobilis 
Syringostroma columnare 
Zaphrentis exigua 
Zaphrentis 'subconstricta 
Alveolites squamosus 
Atrypa aspera 
Atrypa reticularis 
Aulacoplyllum reflexum 
Bellerophon pelops 
Centronella glansfagea 
Chonetes lineata 
Cladopora labiosa 
Cladopora pulchra 
Clisiophyllum convergens 
Crania bordeni 
Cyathophyllum arctifossum 
Cyathophyllum coalitum 
Cyathophyllum conigerum 
Cyathophyllum houghtonii 
Cyathophyllum davidsonii 
Favosites basalticus 
Favosites emmonsii 
Naticopsis humilis 
Paracyclas lirata 
Pleurotomaria aplata 
Pleurotomaria rotalia 
Proetus canaliculatus 
Spirifera mucronata 
Spirifera euruteines 
Strophodonta concava 
Strophodonta patersonii 
Zaphrentis cruciforme 
Zaphrentis conigera 
Zaphrentis gigantea 
Zaphrentis ungula 
s we are indebted to Mr. A. S. TilTany, 
