No. 186.J 89 



ORGANIC REMAINS OP THE MARCELLUS SHALE. 



Original Names. Corrected Names, Remarks, etc. 



Page 



Atrypa limitaris 180 Rhynclionella limitaris. 



Avicula equilatera 180 Aviculopecten equilatera. 



Avicula leevis 180 Pteronites ? Isevis. 



Avicula muricata 180 1 



Orbicula minuta _1 180 Discina minuta. 



Or this nucleus 180 



Ortlioceras subulatum 180 



Stropbomena mucronata 180 Chonetes? mucronata. 



Strophomena pustulosa ISO Productus pustulosus; not 



P. pustulosus of European authors. 



Stropbomena setigera 180 Clionetes setigera. 



Tentaculites fissurella . 180, 222 



ORGANIC REMAINS OF THE HAMILTON GROUP. 



Atrypa concentrica 198 Spirigera = Athyris concentrica. 



Atrypa concinua 200 Nucleospira concinna. 



Atrypa rostrata 202 Merista rostrata. 



Atrypa spinosa 200 Atrypa aspera. 



Avicula decussata _. 203 Pteronites? decussata. 



Avicula orbiculata 202 Aviculopecten orbiculata. 



Belleropbon patulus 196 



Calymene bufo 200 Phacops bufo. 



Crypbseus calliteles . 200 Dalmania calliteles. 



Cucullea opima 196 Nucula opima. 



Cyathopbyllum ., Cyatbopbyllum vanuxemi. 



Cyatbopbollum turbinatum. Heliopbyllum halli. 



Cypricardia truncata 196 ? 



Cystipbyllum cylindricum . 209 Cystipliyllum americanum. 



Cystipbyllum ( indet.) 209 



Dipleura dekayi 205 Homalonotus dekayi. 



Delthyris fimbriata 208 Spirifer fimbriatus. 



Delthyris granulifera 207 Spirifer granuliferus. 



Delthyris macronota 207 Spirifer macronotus. 



Delthyris medialis 208 Spirifer medialis. 



Delthyris mucronata.. 198,205 Spirifer mucronatus. 



Delthyris sculptilis 202 Spirifer sculptilis. 



Delthyris zigzag . 200 Spirifer zigzag. 



Loxonema nexilis __ 200 



Microdon bellastriata 196 



Modiola concentrica 196 Modiolopsis concentricus. 



[Assembly No. 186.] 12 



