INDEX 



Abstract, 1 



Acanthogonyaulax, 8, 52 

 Acanthogonyaulax spinifera, 53 

 acutum, Peridinium truncatum, f., 32 

 armata, Ceratocorys, 40 

 aultii, Ceratocorys, 42 



blpes, Ceratocorys, 43 



bisintercalares, Peridinium depressum, forma, 23 



bisintercalares, Peridinium oceanicum, f., 26 



Ceratiaceae, 56 

 Ceratium, 8, 56 



pavillardii, 56 

 Ceratocoryaceae, 34 

 Ceratocorys, 8, 34, 38 



armata, 40 



aultii, 42 



bipes, 43 



gourretii, 44 



horrida, 38 



reticulata, 42 



skogsbergii, 44 

 claudicanoides, Peridinium, 24 

 convexius, Peridinium depressum, var., 23 

 crassipes, Peridinium, 27 



depressum forma bisintercalares, Peridinium, 23 



forma multitabulatum, Peridinium, 23 



Peridinium, 15 



var. convexius, Peridinium, 23 



var. parallelum, Peridinium, 21 



var. rectius, Peridinium, 22 

 Dissection of specimens, 3 



Epitheca, 9 

 Euceratocorys, 38 



Families of Peridiniales, key, 4 

 Forms treated, list, 6 

 fusiformis, Gonyaulax, 50 



Genera: 



plate formulas, 5 



plate abbreviations, 5 

 Girdle, 9 



Goniodomaceae, 45 

 Goniodoma, 45 



polyedricum, 46 

 Gonyaulacaceae, 47 

 Gonyaulax, 8, 47 



fusiformis, 50 



pacifica, 48 

 gourretii, Ceratocorys, 44 



horrida, Ceratocorys, 38 

 Hypotheca, 9 



Introduction, 2 



kofoidii, Spiraulax, 55 



multitabulatum, Peridinium depressum, forma, 23 



Oceanica, key, 27 



oceanicum, f. bisintercalares, Peridinium, 26 



f. spiniferum, Peridinium, 26 



f. tricornutum, Peridinium, 27 



Peridinium, 24 



var. tenellum, Peridiniimi, 25 



pacifica, Gonyaulax, 48 



pallidum, Peridinium, 32 



parallelum, Peridinium depressum, var., 21 



pavillardii, Ceratium, 56 



Peridiniaceae, 11 



Peridiniales, key to families, 4 



Peridinium, 8, 11 



claudicanoides, 24 



crassipes, 27 



depressum, 15 



depressum forma bisintercalares, 23 



depressum forma multitabulatum, 23 



depressum var. convexius, 23 



depressimi var. parallelum, 21 



depressum var. rectius, 22 



oceanicum f. bisintercalares, 26 



oceanicum f. spiniferum, 26 



oceanicum f. tricornutum, 27 



oceanicum, 24 



oceanicum var. tenellum, 25 



pallidum, 32 



truncatum, 30 



truncatum f. acutum, 32 

 polyedricum, Goniodoma, 46 

 Protoceratocorys, 43 



rectius, Peridinium depressum, var., 22 

 reticulata, Ceratocorys, 42 



skogsbergii, Ceratocorys, 44 

 Species, key, 38 

 Specimens, dissection, 3 

 spinifera, Acanthogonyaulax, 53 

 spiniferum, Peridinium oceanicum, f., 26 

 Spiraulax, 54 



kofoidii, 55 

 Sulcal plates, 7 



Tables, 59 



tenellum, Peridinium oceanicum, var., 25 

 tricornutum, Peridinium oceanicum, f., 27 

 truncatum, f. acutum Peridiniimi, 32 

 truncatum, Peridinium, 30 



Ventral area, 7 



129 



