- 17 - 



Page 



Area trapezina . 371 



tuberculosa ........ 161, 371 



umbonata 152 



undata ....... . 162 



veiata . 156, 371 



ventricosa 153 



virescens « 372 



arcaefonnis, Unio 132, 378 



arcinella, Cardita • • • 369 



Chama .»......«••••• 227 



arctata, Mactra 39 



Mesodesma 39 



arctatum, Mesodesma ........ 341 



arctatus, Unio ........ .207, 380 



arctica ... 337 



Crassina 350 



Grlycimeris 18, 19 



Hiatella .......... 51, 150 



Modiola .242 



Hucula 168, 376 



Panopea • 18 



Saxicava 150 



arcticum, Cardium 139 



arctior, Unio 208, 380 



arcuata, Anodonta 223 



Lima 268 



Pandora 49 



arcuatula, Modiola 236 



arcula, Margaritana. 210 



Unio 210, 380 



arcus, Unio 2Q7, 380 



arealis, ifytilus 246 



arenaria, Ltya 19, 338 



Septaria 3 



areolatus, Anodonta- ........ 218 



argentaria, Periploma ..... 21, 339 



argent ea, Anodonta • • 387 





