488 



INDEX TO GENERA AND SPECIES. 



Ammonites dejectus, Simpson ; see Amaltheus oxynotus . 



„ denotatus, Simpson ; see Arietites Collenotii . 



„ discoides, Zieten ; see Harpoceras discoides.. 



„ dispansus, Lycett ; see Harpoceras variabile . 



„ Dudressieri, d'Orbigny ; see Aegoceras planicosta 



„ elegans, Sowerby ; see Harpoceras bicarinatum 

 „ ,, Young and Bird ; see Harpoceras elegans 



„ Engelhardti, d'Orbigny ; see Amaltheus Engelhardti 



„ erugatus, Phillips ; see Aegoceras planorbis . 



„ exaratus, Yuung and Bird ; see Harpoceras exaratum 



„ exortus, Simpson ; see Arietites raricostatus . 



,, falcaries, Quenstedt ; see Arietites semicostatus 



„ falcifer, Quenstedt ; see Harpoceras nitesceus 

 „ „ Sowerby ; see Harpoceras serpentinum 



,, fasciatus, Simpson ; see Lytoceras cornucopia 



„ Jibulatus, Sowerby ; see Stephanoceras fibulatum 



„ fimbriatus, Sowerby ; see Lytoceras fimbriatum 

 ,, ,, Simpson ; see Lytoceras cornucopia 



„ Fowleri, Buckman ; see Arietites impendens . 



„ gagateus, Young and Bird ; see Aegoceras gagateum 



„ geometricus, Oppel ; see Arietites semicostatus 



„ Germanii, d'Orbigny ; see Lytoceras hercinum 



„ Greenoughi, Sowerby ; see Amaltheus Greenougbi 



„ Grenouillouxi, d'Orbigny ; see Aegoceras pettos 



„ gulernator, Simpson ; see Lytoceras Jurense . 



„ Guibulianus, d'Orbigny ; see Amaltheus Guibalianus 



„ Ilagenowii, Dunker ; see Aegoceras planorbis . 



„ halecis, Buckman ; see Arietites Sauzeanus . 



,, hastatus, Young and Bird ; see Aegoceras armatum 



„ Hawskerensis, Young and Bird ; see Amaltheus spinatus 



„ Henley i, Sowerby ; see Aegoceras Henleyi 



„ heptangularis, Young and Bird ; see Aegoceras striatum 



,, heterogenes, Young and Bird ; see Aegoceras heterogenum 



,, heterophyllus, Sowerby ; see Phylloceras heterophyllum 

 „ „ Amalthei, Quenstedt ; see Phylloceras Zetes 



„ „ numismalis, Quenstedt ; see Phylloceras Loscombi 



„ Hildensis, Young and Bird ; see Harpoceras bifrons 



„ hircinus, Schlotheim ; see Lytoceras hircinum 



,, hybridu, d'Orbigny ; see Aegoceras heterogenum 



„ ibex, Quenstedt ; see Amaltheus ibex 



„ Hiatus, Simpson ; see Aegoceras gagateum 



„ impendens, Young and Bird ; see Arietites impendens 



„ insignis, Schiibler ; see Harpoceras insigne 



„ integricostatus, Simpson ; see Aegoceras gagateum 



„ intermedins, Portlock ; see Aegoceras intermedium 



,, interruptus, Zieten ; see Lytoceras hircinum . 



„ Jamesoni, Simpson ; see Aegoceras sagittarium 



PAGE 



387 



304 



467 



455 



335 



462 



447 



400 



308 



441 



298 



284 



432 



433 



411 



476 



407 



410 



302 



364 



284 



415 



384 



363 



413 



385 



308 



281 



340 



402 



366 



378 



370 



424 



422 



419 



436 



415 



370 



395 



364 



302 



453 



364 



314 



415 



355 



