243 



INDEX 



New taxonomic names and the page numbers of the principal references are printed in Bold 



type. An asterisk (*) indicates a figure. 



Acanthogonyaulax, 132 



acanthosphaera, 132 



paliuros, 132 



venusta, 132 

 Achomosphaera, 46 



alcicornu, 50, 104; PI. 5, fig. 3 



grallaeforme, 104 



hirundo, 104 



hyperacantha, 52 



neptuni, 51, 52; PI. 3, fig. 7, PI. 9, fig. 11 



ramulifera, 49; PI. 2, fig. 3 



var. perforata, 50; PI. 5, figs. 1, 4 



sagena, 51; PI. 2, figs. 1, 2 



triangulata, 52 

 Adnatosphaeridium, 215 



aemulum, 218 



caulleryi, 218 



filamentosum, 218 



filiferum, 218 



multispinosum, 216, 217*; PI. 24, fig. 5 



patulum, 217, 218*; PI. 24, figs. 1, 2 



vittatum, 215, 216*; PI. 24, figs. 3, 7 

 Alberti, G., 210 

 Apteodinium, 204 



granulatum, 204 



maculatum, 205*; PI. 22, fig. 1 

 Areoligera, 173, 227, 228 



coronata, 228, 229*; PI. 25, figs. 5, 7 



ga/ea, 173 



lychnea, 173 



medusettiformis 229, 230; PI. 25, fig. 4 



senonensis, 228, 230*, 231; PI. 25, fig. 6 



gilsonii, 174 



horridum, 174 



huguonioti, 174 



intermedium, 174 



longofilum, 174 



malleoferum, 174 



mariannae, 174 



panniforme, 174 



pattei, 174 



paucifurcatum , 174 



pectini/orme , 174 



plicatum, 174 



polyceratum, 174 



polyozon, 174 



quaternarium, 174 



saturnium, 175 



seminudum, 175 



spiculatum, 175 



stimuliferum , 175 



sylheti, 175 



lelmaticum, 175 



tinglewoodense, 175 



varispinosum, 175 



whitei, 175 

 Belodinium, 109, 148 



dysculum, 148 

 Bicavate cysts, 16 



BOWERBANK, J. S., 19, 69 



Broomea, 207 



longicornuta, 207; PI. 21, fig. 1 



ramosa, 207 

 Brosius, M., 31 



Baltisphaeridium, 157, 174 

 armatum, 174 

 asteroideum, 174 

 claviculorum , 174 

 clavispinulosum, 174 

 densicomatum , 174 

 denticulatum, 174 

 difforme, 174 

 downiei, 174 

 echiniplax, 174 

 fimbriatum, 174 



Callaiosphaeridium, 103 



asymmetricum, 104; PI. 8, figs. 9, 10, PI. 9, 

 fig. 2 

 Cannosphaeropsis, 222 



reticulensis , 223; PI. 24, fig. 9 



utinensis, 222 

 Carpodinium, 109, 139, 140 



granulatum, 139 

 Cavate cysts, 16 



Chalk, Lower; historical background 19, 20 

 stratigraphy 19, 20 



