CONTENTS. 



vn 



Systematic arrangement — Continued. 

 Gastropoda — Continued. 



Order Ctenobranchiata — Continued. 

 Family Turritidae — Continued. 



Genus Drillia — Continued. Page. 



tama . 45 



glyphostoma 45 



(Gymatosyrinx?) silfa 46 



newmani 46 



Genus Mangilia 46 



illiota 46 



sp. indet 47 



Family Cancellariidae 47 



Genus Cancellaria 47 



subthomasiae 47 



depressa 1 48 



(Sveltia) sp. indet 48 



Family Olividae 49 



Genus Oliva 49 



posti . 49 



Genus Olivella 49 



lata 49 



entorta 50 



colleta 50 



Genus Ancilla 50 



sliepardi 51 



Family Marginellidae 51 



Genus Marginella 51 



monitor 52 



infecta 52 



bellula 53 



inepta 53 



fannula . 53 



elegantula , 53 



ballista 54 



tampae 54 



limatula 54 



gregaria 55 



bella 55 



impagina 56 



posti 56 



intensa 56 



myrina 57 



newmani . 57 



Family Volutidae 57 



Genus Lyria 58 



pulchella 58 



heilprini 58 



musicina 59 



silicata 59 



Family Mitridae 59 



Genus Mitra 59 



silicata 60 



syra 60 



myra 61 



