INDEX 



CCX1X 



Coastal deposits, 455 



ccela, Reynesia, PI. 16, figs. 10, 11, p. 92 (Hyper- 



lioceras Walkeri) ; SuppL, PI. 18, fig. 26 ; p. 



civ 

 Cceloceras ; blagdeni 

 cognattun, Cardium, 48 

 Coiling, excentric, cxliv, cliv 

 Coiliug in, stages of, cci 

 Coiling out, stages of, eci 

 Cold Comfort, rubbly oolite compared, 3 ; strata 



of, ccvii 

 Cole, strata of, ccviii 

 Collenotii, Ammonites, 226 

 Collyweston Slate, 48 

 comata, Pleydellia, Suppl., PI. 10, figs. 11-13; p. 



cxxxviii 

 Combinations, innumerable number of, cxcix 

 comensis, Libia, 109; Ammonites, 109, 170, vii, 



x, xi, xii 

 Commune-zone, 131, 163, 165, 223, 282 ; reason 



for term, 114 

 compactile, Harpoceras, 45, 46, 47, 85 

 compactile, Pseudolioceras, p. clix 

 compactile Pseudolioceras, PI. 20, figs. 3, 4, see 



gradatum, P. ; PL 20, figs. 5, 0, pumilum, P. ; 



p. 85, see spp. above 

 compactile, Pseudolioceras, 81, clviii, clix 

 compactilis, Ammonites, 85 

 compactum, Platygraphoceras, PI. 15, figs. 3, 4, 



PI. A, fig. 17, p. 76 (Lioceras apertum) ; 



SuppL, Fig. 57 in text, p. xcv 

 Comparative development (Dumortieria), clxxxiv 

 Comparative table, 144 



complanata, Dorsetensia, PI. 53, figs. 1-10; p. 306 

 complanatus, Ammonites, 127, 217 

 Compressa, cxxiii 

 compressa, Haugia, Suppl., PI. 2, figs. 8-10 ; p. 



xxvii 

 compressa, Haugia, xi 

 Compression, progressive, lxxxix 

 compressum, Pseudographoceras, PI. 15, figs. 5, 



6 ; p. 72 (Lioceras concavum) ; Suppl., PI. 15, 



fig. 21 ; p. xciii 

 Compton, 19, 266 

 comptum, Harpoceras, 53 

 comptum, Lioceras, Suppl, PI. 7, figs. 7-12; p. 



xliii 

 comptum, Lioceras, 43, 52 



comptus, Ammonites, 54, 184, 248 ; "Nautilus, 53, 

 xxxvi, xliii 



concava, Ludwigella, PI, 2, figs. 5, 6 ; PI. 8, figs. 

 1,2; p. 56 (Lioceras concavum) ; Suppl., Fig. 

 51 in text, p. lxxxvi 



concava, Ludwigella, liemera, ccv 



concave, iv 



concavi-fastigate, iv 



Concavi hemera, vi ; strata of, ccvii 



Concavum bed, developments of, 61, 62 



Concavum beds, remarks on, 63 ; correlation with 

 Cotteswold strata, 65 



concavum, Harpoceras, 56 



concavum, Lioceras, PI. 2, figs. 6, 7, see concava, 

 Ludwigella ; PI. 6, see magna, Lucya ; PI. 8, 

 figs. 1, 2, see concava, Ludwigella ; PI. 8, figs. 

 3, 4, decorum, Graphoceras ; PI. 8, figs. 5, 6, 

 sublineata, Brasilia ; PI. 8, fig. 7, flaccidum, 

 Graphoceras ; PL 9, figs. 8-10, stigmosum, 

 Graphoceras ; PL 10, figs. 3, 4, see pulchra, 

 Brasilia ; PL 10, fig. 9, undulatum, Grapho- 

 ceras ; PL IS, figs. 5, 6, see compressum, 

 Pseudographoceras ; p. 56, see spp. above 



concavum, Lioceras, 9, 12, 301, 374, 447, lxxvi, 

 lxxix, lxxx, lxxxi, lxxxvi, xciii, xcvi, xcvii, 

 xcviii 



concavum var. formosum, Lioceras, PL 10, figs. 1, 

 2, p. 65, see formosum, Depaoceras 



concavum, var. pingue, Lioceras, PL 12, figs. 1-3, 

 p. 66, see pinguis, Brasilia 



concavum, var. v-scriptum., Lioceras, PL 9, figs. 

 1-4, see cavata, Lucya ; PL 9, figs. 5, 6, stig- 

 mosum, Graphoceras ; PL 9, fig. 7, limitatum, 

 Graphoceras ; PL 10, figs. 5, 6, v-scriptum, 

 Graphoceras ; PL 10, figs. 7, 8, limitatum, 

 Graphoceras ; p. 68, see spp. above 



concavum, Lioceras, table of varieties of, 74 



Concavum-zone, 223, 282, 291, 292, 317, 320, 321 ; 

 regarded as Sowerbyi-zone, 342 ; absent or 

 destroyed from large part of Continent, 452 ; 

 divisible into two or three parts, 447 ; note 

 on, see Explanation of PI. 46 



Concavumbilicate, iv ; species, relation to grad- 

 umbilicate, xcviii ; species, note concerning 

 homceomorphy of, xcviii 

 concavus, Ammonites, 35, 56, 68, lxxxvi ; bowl- 

 shaped umbilicus of, iv 

 Concentric umbilicus, 323 



F P 



