INDEX TO GENERA AND SPECIES. 



49:3 



Nautilus opalinus, Reinecke ; see Harpoceras opalinum . 

 radians, Reinecke ; see Harpoceras radians 

 rotula, Reinecke ; see Amaltheus margaritatus , 

 striatus, Reinecke; see Aegoceras striatum 

 subcarinatus, Young and Bird ; see Phylloceras subcarinatum 

 Whitbiensis, Young and Bird ; see Phylloceras heterophyllum 



PlaNites anguinus, Haan ; see Stephanoceras annulatum 

 bifidus, Haan ; see Stephanoceras commune 

 Birchi, Haan ; see Aegoceras Birchii . 

 bisulcatus, Haan ; see Arietites Bucklandi 

 Conybeari, Haan ; see Arietites Conybeari 

 Davoei, Haan ; see Aegoceras Davcei . 

 fibnlatvs, Haan ; see Aegoceras armatum 

 planicostatus, Haan ; see Aegoceras planicosta 

 serpentinus, Haan ; see Harpoceras serpentinum 

 subarrnatus, Haan ; see Stephanoceras subarmatum 



Phylloceras, Suess .... 



Buvignieri, d'Orbigny, pi. lxxvi, figs. 1 — 3 

 heterophyllum, Sowerby, pi. lxxvii, fig. 4 ; pi. lxxviii, figs. 1, 2 

 Loscombi, Sowerby, pi. xxxix, figs. 1 — 3 l ; pi. xl, figs. 4, 5 

 subcarinatum, Young and Bird, pi. lxxxi, figs. 1 — 3 

 Zetes, d'Orbigny, pi. lxxvii, fig. 1 — 3 



Stephanoceras, Waagen .... 



,, annulatum, Sowerby, pi. xxxiv, figs. 7 — 9 



„ Braunianum, d'Orbigny, pi. lxxxvi, figs. 3, 4 ; pi. lxxxvii, figs. 5, 6 



„ commune, Sowerby, pi. lxxxiii, figs. 3, 4 ; pi. lxxxiv, figs. 



figs. 9, 10 



„ crassum, Young, pi. lxxxvi, figs. I, 2, 8 — 10 



„ fibulatum, Sowerby, pi. Ixxxv, figs. 5—11 



„ Raquinianum, d'Orbigny, pi. lxxxvi, figs. 5 — 7 ; pi. lxxxvii, figs. 1 — 4, 7, 8 



„ subarmatum, Young, pi. Ixxxv, figs. 1 — 4 



Turkilitrs Boblayei, d'Orbigny ; see Arietites raricostatus. 

 „ Coynarti, d'Orbigny ; see Aegoceras planicosta 



„ Valdani, d'Orbigny ; see Aegoceras biferum .... 



PAGE 



463 



449 

 397 

 378 

 428 

 424 



475 

 473 

 332 

 269 

 272 

 346 

 340 

 335 

 433 

 477 



418—429 

 421 

 424 

 419 



428 

 422 



471—481 

 . 475 



1 — 3 ; pi. lxxxvii, 



480 



473 

 481 

 476 

 478 

 477 



335 

 333 



1 Named Aegoceras Loscombi on explanation of plate xxxix. 



