238 INDEX. 



LAMELLIBRANCHIATA. 



PLATES. 



Actinopteria 



boydi 3 



Aviculopecten 



crassicostatus 



f asciculatus 3 



pecteniformis 3 



princeps 



Clinopistha 



antiqua 



striata 4 



subnasuta 4 



Conocardium 



cuneus 5 



Cypricardinia 



cataracta 4 



cylindrica 4 



inflata, var. sub-equivalvis 



Cypricardites 



halli . 34 



Glyptodesma 



cancellata . 5 



occidentals 3 



Goniophora 



truncata 4 



Grammysia 



gibbosa _ 4 



Limoptera 



cancellata 3, 4 



Modiomorpha 



affinis 



alta 26 



charlestownensis 5 



concentrica 2 



mytiloides 



