CONTENTS 



Page 



Introduction 1 



Benthonic Families (Rotaliform) 



Family Spirillinidae 4 



Genus Spirillina 4 



Genus Conicospirillina 7 



Family Discorbidae 7 



Genus Patellina 7 



Genus Patellinella 9 



Genus Rosalina 10 



Genus Discorbis 14 



Genus Svratkina 14 



Genus Neoconorbina 15 



Genus Hanzawaia 17 



Family Rotaliidae 18 



Genus Gavelinopsis 18 



Genus Rotorbinella 18 



Genus Gyroidina 19 



Genus Eponides 20 



Genus Cancris 22 



Genus Baggina 22 



Genus Valvulineria 22 



Genus Siphonina 22 



Genus Siphoninoides 23 



Genus Oridorsalis 23 



Genus Stomatorbina 24 



Genus Paumotua 25 



Genus Epistomaroides 25 



Genus Osangularia 25 



Genus Lamar xkina 26 



Genus Heronallenia 26 



Genus Bronnimannia 27 



Genus Planulinoides 27 



Genus Bueningia 28 



Genus Pararotalia 29 



Genus Streblus 29 



Genus Nuttallides 29 



Genus Epistominella 30 



Family Pegidiidae 32 



Genus Hofkerina 32 



Genus Pegidia 32 



Genus Sphaeridia 33 



Family Amphisteginidae 33 



Genus Amphistegina 33 



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