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INDEX TO GENERA AND SPECIES. 



Arietites semicostatus, Young and Bird, pl. i, figs. 4 — 8 . 

 „ stellaris, Sowerby, pl. xxii, figs. 1—6 



„ subnodosus, 1 Young and Bird, pi. vi, figs. 2, 3 . 



„ Turneri, Sowerby, pi. xii, figs. 1 — 6 . 



Globites heterophyllus, Haan ; see Phylloceras heterophyllum 

 „ Loscombi, Haan ; see Phylloceras Loscombi 



Harpoceras, Waagen .... 



Aalense, Zieten, pi. Ixxv, figs. 8 — 10 ; pi. lxxx, figs. 1 — 3 ; pi. lxxxii, figs 



acutum, Tate, pi. lxxxii, figs. 7, 8 . 



antiquum, Wright, pi. lvii, figs. 1 — 4 



bicarinatum, Milnster, pi. lxxxii, figs. 9 — 1 1 



bifrons, Bruguiere, pi. lix, figs. 1 — 4 



costula, Reinecke, pi. lxxxii, figs. 5, 6 



discoides, Zieten, pi. lxxxii, figs. 12 — 13 



elegans, Young and Bird, pi. Ixiii, figs. 1 — 3 



exaratum, Young and Bird, pi. Ixii, figs. 1 — 3 



insigne, Schiibler, pi. lxv, figs. 1—6 ; pi. lxvi, figs. 1 — 3; pi. Ixxv, figs. 1- 



Levisoni, Simpson, pi. lx, figs. 1,2; pi. lxi, figs. 1 — 6 



Lythense, Young and Bird, pi. Ixii, figs. 4 — 6 



nitescens, Young and Bird, pi. xlix, figs. 2 — 7 



Normanianum, d'Orbigny, pi. lxxxiii, figs. 1, 2 



opalinum, Reinecke, pi. lxxx, figs. 4 — 8 



ovatum, Young and Bird, pi. Ixiii, figs. 4 — 7 



radians, Reinecke, pl. lxiv, figs. 1 — 7; pi. lxxiv, figs. 1, 2; pi. xxxi 



serpentinum, Reinecke, pl. lviii, figs. 1 — 3 . 



striatulum, Sowerby, pl. lxxxiv, figs. 4 — 6 



variabile, d'Orbigny, pl. lxvii, figs. 1 — 6 ; pl. lxviii 



Lytoceras, Suess .... 



cornucopia, Young and Bird, pl. lxxiii, figs. 1 — 3 

 fimbriatum, Sowerby, pl. lxxi, fig. 1 ; pl. lxxii, figs. 1 — 4 

 hircinum, Schlotheim, pl. Ixxv, figs. 4 — 5 ; pl. Ixxvi, fig. 6 

 Jurense, Zieten, pl. lxxiv, figs. 3 — -5; pl. lxxix 

 lineatum, Schlotheim, pl. lxix, fig. 1 

 torulosum, Schiibler, pl. xxvi, figs. 4, 5 



Nautilus anguinus, Reinecke ; see Stephauoceras annulatum 

 ,, annularis, Reinecke ; see Stephanoceras commune 

 „ comptus, Reinecke ; see Harpoceras Aalense 

 ,, costatus, Reinecke ; see Amaltheus spinatus 

 „ costula, Reinecke ; see Harpoceras costula 

 ,, mceandrus, Reinecke ; see Harpoceras opalinum 



figs. A- 



—4 



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1 Termed Arietites nodulosus on the explanation of plate vi. 



