490 



INDEX TO GENERA AND SPECIES. 



Ammonites oblique-costatus, Hauer. ; see Arietites rotiformis 



„ ,, interruptus, Schubler ; see Lytoceras hercinum 



„ obtusus, Sowerby ; see Arietites obtusus 



„ opalinus, Quenstedt ; see Harpoceras opalinum 



„ oxynotus, Quenstedt ; see Amaltheus oxynotus 



„ ovatus, Young and Bird ; see Harpoceras ovatum 



,, paradoxus, Zieten ; see Amaltheus margaritatus 



„ personatus, Simpson ; see Arietites Scipionianus 



,, pettos, Quenstedt ; see Aegoceras pettos 



,, Phillipsii, Simpson ; see Harpoceras insigne . 



,, planicosta, Sowerby ; see Aegoceras planicosta 



„ planorbis, Sowerby ; see Aegoceras planorbis . 



„ polymorphus, Quenstedt ; see Aegoceras polymorphum 



„ polyophyllus, Simpson ; see Amaltheus oxynotus 



,, primordialis, Schlotheim ; see Harpoceras opalinum 



,, proboscidens, Zieten ; see Aegoceras Taylori . 



„ psilonotus, Quenstedt ; see Aegoceras planorbis 



,, quadricornutus, Simpson ; see Aegoceras Taylori 



,, Quenstedti, Schafhault ; see Arietites nodotianus 



,, radians, Zieten ; see Harpoceras radians 



,, „ amalthei, Oppel ; see Harpoceras nitescens 



„ ,, costula, Quenstedt ; see Harpoceras costula 



„ „ depressus, Quenstedt ; see Harpoceras striatulum 



,, radiatus, Simpson ; see Arietites impendens . 



„ Raquinianus, d'Orbigny ; see Stephanoceras Raquinianum 



,, raricostatus, Zieten ; see Arietites raricostatus 



,, Redcarensis, Young and Bird ; see Aegoceras angulatum 



,, Regnardi, d'Orbigny ; see Aegoceras Jamesoni 



,, resupinatus, Simpson ; see Arietites Sauzeanus 



„ Robinsoni, Simpson ; see Amaltheus oxynotus 



,, rotiformis, Sowerby ; see Arietites rotiformis . 



„ rotula, Haan ; see Amaltheus margaritatus 



,, rugatulus, Simpson ; see Harpoceras Aalense 



,, Sampsoni, Portlock ; see Aegoceras planorbis . 



„ Sauzeanus, d'Orbigny ; see Arietites Sauzeanus 



„ Scipionianus, d'Orbigni ; see Arietites Scipionianus 



„ semicostatus, Young and Bird ; see Arietites semicostatu> 



„ serpentinus, Schlotheim ; see Harpoceras serpentinum 



,, siymifer, Phillips ; see Harpoceras Aalense 



,, Simpsoni, Bean ; see Amaltheus Simpsoni 



„ Smithi, Sowerby , see Arietites obtusus 



„ spinaries, Quenstedt ; see Arietites Sauzeanus . 



n ,, Wagener ; see Arietites semicostatus 



„ spinatus, Bruguiere ; see Amaltheus spinatus 



„ stellaris, Sowerby ; see Arietites stellaris 



,, Stokesi, Sowerby ; see Amaltheus margaritatus 



„ Strangewaysi, Sowerby ; see Harpoceras serpentinum 



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