INDEX 



ccxm 



Ammontiferous, deposits, 456 ; horizon, ceviii 



Ammonitinae, 289 



Ammonoidea, 126 ; restricted range of certain 



sub-orders of, 456 

 amcena, Reynesia, Suppl., PI. 20, figs. 40-42; p. ciii 

 Anagenesis, 289, ccii, cciii, cxcix 

 Anagenetic, characters, cc ; costate stage, clxix 

 Anaplasis, 357 

 Anbury Quarry, 5, 96 

 Ancestor, Arietan, 159 ; binodate, cxxx 

 Ancolioceras, p. xlvii; cariniferum, costatum, 



substriatum 

 Ancolioceras, from Manselia, lviii ; classification, 



cxcviii 

 Ancyloceras, 14, ccii 

 Andimn, Hammatoceras (Sonninia), 453 ; Harpo- 



ceras, 157, vi 

 Andoversford, 91, lxvi, clxx 

 anglica, Zeilleria, xxxvii, lviii, lxix 

 angulata, Paquieria, Suppl., fig. 24, p. lxvii 

 angulata, Schlothoimia, 234 

 Anglo-Parisian Basin, 452 

 angulifera, Braunsina, PI. 15, figs. 16, 17, p. 103 ; 



(Ludwigia rudis) ; Suppl., fig. 63, in text, p. ci 

 Anguliradiatre, xc 

 Anguliradiate, iii 

 Angidiradiate (series), lxiv 



Anguliradius, iii; position of, in evolution, lxxiv 

 Angustilobate (series), lxiv 

 Angustisellati, 126 

 Angustumbilicate, v, cxcvii 

 Angustumbilicate (series), ciii, cvii 

 Angustumbilicate terminals, xcix 

 Angustumbilication, ccii 

 Annidar radii, 267 

 annulatum, Dactylioceras, 272 

 antiquum, Grammoceras, 133, 140, 161-163 

 antiquus, Ammonites, 132 

 Apedogyria, p. lix, patellaria, platychora, sub- 



cornuta 

 Apedogyria, from Ludwigia, lxi ; classification, 



cxcviii 

 apertum, Lioceras, PL 10, fig*. 10, 11, see apertum, 



Platygraphoceras ; PL IS, figs. 3, 4, see com- 



pactum, Platygraphoceras ; PL 15, figs. 7, 



8, futilis, Braunsina ; PI. 15, Jigs. 9, 10, 



sp., Platygraphoceras; p. 76, see spp. var. 



above. 



apertum, Lioceras, xcv, ci. 



apertum, Platygraphoceras, PL 10, figs. 10, 11 ; 



p. 76 (Lioceras apertum) ; Suppl., PI. 15, fig. 



23 ; Fig. 55 in text, p. xciv 

 Appendages of mouth, 454 

 Apennines, Central, 220, xviii 

 Aptychus, not known in South of England, 11 ; 



of Dumortieria subundulata, 262 

 arata, Dumortieria, PL 39, figs. 1, 2, see subaratum, 



Catulloceras; PI. 39, figs. 3-5, aratum, Catul- 



loceras 

 arata, Dumortieria, clxxii 



aratum, Catulloceras, PI. 39, figs. 3 5 (Dumor- 

 tieria arata), p. 280 

 aratum, Catulloceras, p. 2S0 (pars), see subara- 

 tum, C. 

 aratum, Catulloceras, clxxii 

 arbustigerus, Ammonites, 272 

 Arcestidse, 14 

 Archetype lobe, 381 

 arcitenens, Ludwigella, PI. 4, fig. 1, 2, p. 20 



(Ludwigia cornu) ; Suppl., Fig. 46 in text, p. 



lxxxv 

 arcuata, Ludwigella, Suppl., PI. 20, figs. 28-30, p. 



lxxxix 

 arcuata, Walkeria, PI. xxxii, figs. 11, 12, p. 199 



(Grammoceras sp.) ; Suppl. fig. 121, p. clxvii; 



p. cxxxix 

 Arcuate ribs, 142 

 arcuatum, Lopadoceras, Suppl, PI. 21, figs. 19-21, 



p. cxii 

 arenacea, Canavarella ?, PI. 28, figs. 20, 21, p. 173 



(Grammoceras striatulum) ; Suppl., fig. 101, 



p. Clxv ; p. CXXix 



arenaria, Dumortieria, Suppl., PI. 22, figs. 34-36, 



p. clxxxv 

 arenata, Sonninia, 315 

 arenatus, Ammonites, 315 

 Argentine Eepublic, 148, 157 

 Arietan, ancestor, 159 ; stage, 159, 223 

 Arieticeras ; acutum 

 Arietidae, 225 

 Arietida?, 15, 128, 280, 284, 294, 299, cci, cxcviii ; 



evolved from Caloceras, 223 ; genera, cxcix 

 arietiforme, Harpoceras, 13 

 Arietites, 14, 109, 110, 128 

 Arietitidae, 128 

 armatum, Cerithium, 5 



