232 INDEX. 



PLATES. 



Cyrtia 



exporrecta 27 



exporrecta, var. arrecta 27, 32, 34 



Cyrtina 



crassa__ 13 



hamiltoniae 13 



hamiltoniae, var. recta 13 



Discina 



doria 



grandis '.. , 3 



Leiorhynchus 



quadricostatus 



Leptocoelia 



hemispherica 1 32 



Lingula 



triangulata - 31 



Meristella 



nasuta _.. 15 



unisulcata 15 



Meristina 



maria : 29 



nitida % - - - - 33 



Nucleospira 



concinna . 32 



elegans .- - 



pisif ormis 33 



Orthis 



bif orata 29 



borealis 34 



elegantula 32 



flabellum 34 



goodwini 17 



hybrida 32 



livia 16, 17 



linneyi r 34 



