DISTRIBUTION OF SPECIES. 



119 



3. List of Post- Tertiary Species now extinct, or unknown in the living state. 



Bairdia Cambrica. 

 Aglaia cylindrica. 

 Cythere cribrosa. 



— Cluthge. 



— Logani. 



— deflexa, 



— macropora. 



— Hoptonensis. 

 Limnicythere antiqua. 

 Cytheridea inornata. 



Krithe glacialis. 

 Cythernra compressa. 



— complanata. 

 Cytheropteron Montrosiense. 

 Bytliocythere elongata. 

 Cytherideis subspiralis. 

 Paradoxostoma tenemm. 



— pyriforme. 

 Bosquetia robnsta. 



Comparing the British Post-tertiary Ostracoda, so far as we at present know them, 

 with those recorded by the late Professor Sars and Dr. G. O. Sars,^ and by Messrs. 

 Crosskey and Robertson,^ as occurring in the Glacial and Post-glacial beds of Norway, 

 we find that of the forty-five Norwegian species all, except eight (marked * in the 

 following list), occur likewise in the British deposits of similar date ; while of these eight, 

 Cytherura atra is altogether unknown to us, and it is just possible that we may have 

 included forms strictly referable to it under some other species of that difficult genus. 

 Cythere truncata has not yet been described by G. O. Sars, and may very probably be 

 identical with some other species described in this Monograph. Of these forty-five 

 species (leaving C. truncata and C. atra as doubtful), Krithe glacialis is the only one 

 which is absent from the recent marine fauna of Norway and Great Britain, and we 

 may add that Cythere alhomaculata, a species very abundant and characteristic of the 

 British recent and fossil faunae, appears to be almost or entirely absent from those of 

 Norway. 



4. List of Ostracoda found in the Glacial and Post-Glacial deposits of Norway. 



Paracypris pohta. 

 Pontocypris mytiloides. 

 Cythere viridis. 



— Intea. 



— pellucida. 



Cythere crispata. 

 ^ — borealis. 



— villosa. 



— angulata. 



— emarginata. 



1 'Om de i Norge forekommende fossile Dyrelevninger fra Qiiartaerperioden, et Bidrag til vor Faunas 

 Historie, af Dr. phil. et med. Michael Sars.' Cliristiania, 1865. 



2 See "Notes on the Post-tertiary Geology of Norway," by Henry W. Crosskey, F.G.S., and David 

 Robertson, F.G.S. 'Trans. Phil. Soc. Glasgow,' 1868. 



