Hall.] 08 [Jan. 15, 



Artylospongia, Stromatopora, 



Atr\'pa reticularis, • 



Aulopora, Trematospira formosa, 



Conopliyllum, Zaplireiitis. 



3Ierista arcuata, 



All the above are from Aughwick Valley, near Orbisonia. 



Rogers, p. 835, gives the following, also : 



Etonia pcculiaris, Spirifer macropleurus, 



Platj'ostoma, " sulcatus, 



Rhj^nconella nobilis, Strophodonta puactulifera. 



NIAGARA, WATERLIME, AND ONONDAGA, OR SALINA. (Scaleut, VI.) 



Rogers, p 824, gives the following : 



Bevrichia pennsylvanica, Tentaculites ornatus. 



Leperditia alta, 



CLINTON GROUP. (Surgent, V.) 



Atrypa reticularis,* Ferguson and Aughwick valley. 



Beyrichia lata, 



Buthotrcpis gracilis,* " " " " 



Dalmania limulurus, " " " " 



Homalonotus delphinocephalus, " " " " 



lUsenus barrienis, Ferguson valley, Mifflin county.- 



Merista intermedia,* Bell's Mills, Blair county. 



Modiolopsis subcarinatus Ferguson valley. 



Orbicula, Bell's Mills. 



Ortliis elegantula,* Ferguson and Aughwick valley. 



Orthonota curta, " valley. 



Platyostoma niagarensis, " and Aughwick valley. 



Pterinea eniacerata " " " " 



Pterinea rhomboidea, " valley 



Rhynconella neglecta, " and Aughwick valley 



" robusta, " valley. 



Spirifer radiatus, Bell's Mills. 



Strophomena rhoniboidalis,* Ferguson and Aughwick valley. 



" subplana,* " valley. 



Strophodonta prisca " " 



ONEIDA CONGLOMERATE AND MEDINA SANDSTONE. {Levant, IV.) 



Arthropbycus harlani.* Mifflin and Schuylkill Counties. 



Rogers, p. 822, gives the following, also: 

 Bucania trilobatus, Lingula cuneata. 



* Those marked * are mentioned by Rogers. 



