486 



INDEX TO GENERA AND SPECIES. 



PAGE 



Aegoceeas pettos, Quenstedt, pi. xxxvii, figs. 5 — 7 ; pi. Ixix, figs. 5, 6 . . . 363 



„ planicosta, Sowerby, pl. xxiv, figs. 1 — 8; pi. xxv, figs. 1 — 3 . . . 335 



„ planorbis, Sowerby, pl. xiv, figs. 1 — 4 ..... 308 



„ polymorphum, Quenstedt, pl. xl, figs. 1 — 3 ..... 376 



„ Portlockii, Wright, pl. xlviii, figs. 4, 5 . . . . , 372 



„ sagittarium, Blake, pl. lii, figs. 1 — 5 ; pl. liiA, figs. 1 — 6 . . . 355 



„ Slatteri, Wright, pl. 1, figs. 1—8 . . . . . .374 



„ striatum, Reinecke, pl. xlii, figs. 1 — 5 ; pl. xlii, fig. 1 . . . . 378 



„ submuticum, Oppel, pl. xxvii, figs. 1,2. . . . . 338 



„ Taylori, Sowerby, pl. xxxi, figs. 5 — 7 ..... 348 



„ Valdani, t^'OrSe^^-My, pl. xxxviii, figs. 1 — 4 ; pl. Ixix, figs. 2 — 4 . . . 357 



Amaltheus, Montfort ....... 383—405 



„ Engelhardti, d'Orbigny, pl. Ixx ...... 400 



„ Greenoughi, Sowerby, pl. xliv ...... 384 



„ Guibalianus, d'Orbigny, pl. xlv, figs, i — 7 ..... 385 



„ ibex, Quenstedt, pl. xxxix, figs. 4, 5 . . . . . 395 



„ lenticularis, Young, pl. Ixxxii, figs. 14, 15 . . . . . 482 



„ Lymensis, Wright, pl. xlvi, figs. I — 3 ; pl. xlvii, figs. 1 — 3 ; pl. xlviii, figs. 1, 2 . 391 



„ margaritatus, Montfort, pis. liii, liv, figs. 1 — 3, and Ivi, figs. 6 — 15, 19, 20 , . 397 



„ oxynotus, Quenstedt, pl. xlvi, figs. 4 — 6 ..... 387 



„ Simpsoni, Bean, pl. xlvii, figs. 4 — 7 ..... 392 



„ spinatus, Bi-uguiire, pl. Iv, figs. 1, 2 ; pl. Ivi, figs. 1 — 5 . . . 402 



„ Wiltshirei, Wright, pl. xlviii, fig. 3 . . . . . . 393 



Ammonites, Aalensis, Zieten ; see Harpoceras Aalense ..... 458 



„ acuius, Sowerby ; see Amaltheus margaritatus .... 397 



„ „ Tate ; see Harpoceras acutum . . . . . 469 



,, algovianus, Oppel; see Harpoceras nitescens ..... 432 



„ amaltheus, Scblotheim ; see Amaltheus margaritatus .... 397 



,, „ gibbosus, Scblotheim ; see Amaltheus margaritatus . . . 397 



,, Andrece, Simpson ; see Stephanoceras fibulatum .... 476 



„ angulatus, Quenstedt ; see Aegoceras Charmassei .... 323 



„ „ Scblotheim ; see Amaltheus spinatus .... 402 



„ „ Scblotheim; see Aegoceras angulatum . . . .318 



„ „ Sowerby ; see Stephanoceras commune .... 473 



,, anguliferus, VinWvps, \ see Aegoceras angulatum .... 318 



„ annularis, Scblotheim ; see Stephanoceras commune .... 473 



„ annulatus, Sowerby ; see Stephanoceras annulatum .... 475 



„ antiquatus, Simpson ; see Aegoceras Charmassei .... 323 



„ arietes, Scblotheim ; see Arietites Bucklandi ..... 269 



„ armatus, Sowerby ; see Aegoceras armatum ..... 340 



„ ,, densinodus, QMeu&ieAt ; see Aegoceras densinodum . . . 350 



„ balteatus, Phillips ; see Lytoceras cornucopia . . . .410 



„ Beanii, Simpson ; see Harpoceras variabile . . . . . . 455 



„ Bechei, Sowerby ; see Aegoceras Bechei ..... 380 



„ Belcheri, Simpson ; see Aegoceras Belcheri . . . . .313 



„ bicarinatum, Miinster ; see Harpoceras bicarinatum .... 462 



,, bi/er, Quenstedt ; see Aegoceras biferum .... 333 



