No. 186.] 71 



Original Names. Changed Names, Remarks, etc. 



Vol. I, page 



Lituites undata 52 



Lyrodesma _. 302 



Lyrodesma plana ,_ 302 ' 



" pulchella 302 Tellinoinya pulcliella. 



Maclurea magna. _ _. 20 



" matutina 10 



" sordida ._ 20 



Metoptoma '? dubia 23 Genus undetermined. 



" '? rilgOSa 306 Genus undetermined. 



Modiola 1 obtUSa ._ ._ 40 The shell is too obscure to be satisfactori- 

 ly determined. It is probably a PalcBarca or a Modiolopsis. 



MoDIOLOPSIS 157 The species originally described under this 



genus are not all referable to one generic form, but I have not yet obtained 

 the means of a satisfactory discrimination in all the examples. 



Modiolopsis anodontoides . . 298 



" arcuatus 159 



" aviculoides 161 



" carinatus 160 



a 1 (jiii-ta 297 ^^^® species is probably distinct from 



Modiolopsis. 



" faba 158,298 



" latus 160 Palsearca lata. 



" modiolaris 294 



" nasutus 159,296 



" '^ nUCUliformiS 298 ^^^^ species is probably a Nucula or 



Tellinomya. 



« parallela 158 



" subspatulatus 159 Palsearca subspatulata. 



" 1 trentonensis 161 



" truncatus 296 



Murchisonia abbreviata 32 



" 1 angustata 41 



" bellacincta 179 



" bicincta 177 



« gracilis 181-303 



" perangulata 41 



" var. A 179 



" subspiniformis 180 



" bicarinata 178 



" uniangulata 179 



" var. abbreviata 304 



" varicosa 41 



" ventricosa 41' 



" vittata.. 181 



