TABLE OF CONTENTS. 



Paee. 



Introduction 1 



Systematic Part 2 



Family 5. Lagenidae 2 



Subfamily 1. Lageninae 3 



Genus Lagena 3 



acuta 5 



acuticosta 5 



advena 6 



annectens 7 



apiculata 7 



aspera 8 



bicarinata 8 



botelliformis 8 



castanea 9 



catenulata 9 



chrysalis 10 



clavata 10 



costata ■- 12 



crenata 12 



curvilineata 13 



cymbula 13 



distoma 14 



elongata 15 



faba 16 



falcata 16 



" fasciata 16 



felsinea 17 



fimbriata 17 



flintiana 18 



forficula 19 



globosa 20 



gracilis 22 



gracillima 23 



hexagona 24 



hispida 26 



iota 27 



lacunata 28 



laevigata 28 



laevis 29 



var. nebulosa 29 



lagenoides 30 



var. tenuistriata 31 



lineata 31 



longispina 32 



lucida 33 



V 



