CONTENTS V 



Family Nonionidae — Continued. Page 



Genus Elphidium 46 



crispum 47 



craticulatum 48 



jenseni 48 



milletti 49 



macellum var. limbatum 50 



advenum 50 



var. depressulum 51 



reticulosum 51 



subcvolutiim 52 



oceanicum 52 



simplex 52 



Genus Ozawaia 53 



tongaensis 53 



Family Camerinidae 54 



Subfamily Camerininae 54 



Genus Operculinella 54 



venosa 54 



Genus Operculina 55 



gaimairdi 55 



granulosa 56 



Genus Heterostegina 56 



depressa 57 



suborbicularis 58 



curva 59 



Genus Cyclodypeus 60 



guembelianus 60 



Family Peneropliidae 60 



Subfamily Spirolininae 60 



Genus Peneroplis 60 



planatxis 61 



Genus Spirolina 62 



arietina 62 



acicularis 63 



Genus Monalysidium 63 



polilum 63 



Subfamily Orbitolitinae 64 



Genus Sorites 64 



marginalis 64 



Genus Amphisorus 65 



hemprichii 65 



Genus Marginopora 67 



veriebralis 67 



Family Alveolinellidae 68 



Genus Alveolinella 68 



qitoyi 68 



Explanation of plates 69 



Index 75 



