66 [Assembly 



Original Names. Changed Names, Remarks, etc. 



Vol. I, page 



Atrypa dubia ._ 21 Rliynchonella dubia. 



" exigUa 141 Genus? 



" extans 137 Triplesia extans. 



" liemiplicata 144 Pentamerus hemiplicatus. 



" increbescens.. 146-289 Rhynclionella increbesceus. 



" modesta 144 Genus? Related to Leptoccelia ? 



" nucleus 138 Triplesia nucleus. 



" plena 21 Rhynchonella plena. 



" plicifera 21 Rhynchonella plicifera. 



" recurvirostra 140 Rhynchonella'? recurvirostra. 



This species is perhaps generically iden- 

 tical with A. modesta. 



" sordida _ 148 Rhynchonella sordida. 



" subtrigonalis 145 Rhynchonella subtrigonalis. 



Aulopora arachnoidea 76 



Avic'ula demissa 292 



" ? deSQUamata 292 The specimen has not heen satisfactorily 



^ determined to the present time. It is 



not Avicula. 



" elliptica._ 162 Genus? 



" insueta.. _._ 291 



" trentonensis 161 Genus? 



Bellerophon bilobatus, 184 - 307 



" ?;ar. acutus 185 



" •yar. corrugatus . . 185 

 " cancellatus „. 307 



RuCANIA , 32 The genus Bucania is regarded by most 



authors as not distinct from Bellerophon ; while these forms are made by 

 D'Orbigny typical of the genus Bellerophon, and those like B. bilobatus 

 are very erroneously placed by him under the genus Cyrtolites. Although 

 there may be no sufficient reason for separating some forms of Bellerophon 

 with exposed spires, I have for the present allowed these species to remain 

 as originally described. 



Bucania bidorsata 186 



" expansa ._ _. 186 



" intexta.. 317 



" punctifrons 187 



" rotundata ._ 33 



" sulcatina ._ 32 



BUTHOTREPHIS 8 



Buthotrephis antiquata 8 



" flexuosa ._ 263 



" gracilis 62 



" subnodosa 262 



" succulens 62 



Calymene beckii 237,250 Triarthrus becldi. 



