INDEX 



CCXXXlll 



impendens, Ammonites, 226 



impolita, Ludwigella, Suppl., PI. 19, figs. 25 27, 

 p. lxxxv 



insequa, Haugia, PI. 25, figs. 5, 6, PI. A, fig. 37, 

 p. 156 (Haugia eseri) ; Suppl., p. xxix 



insequa, Sonninia, PI. 101, figs. 4 6, pp. 386, 400 



Inaequiornate, iv, x 



Incoiling, civ 



incisum, Toxolioceras, Suppl., PI. 21, figs. 31-33, 

 p. cxxvi 



inclusa, Dumortieria, PI. 45, figs. 13, 14, p. 254 

 (Dum. radiosa var. gundershofensis) ; p. 

 clxxx 



inclusum, Graphoceras, Suppl., PI. 15, figs. 15- 

 17, p. xcviii 



inconstans, Zurcheria, PI. 50, figs. 4 10, p. 297 



Tndo- Pacific province, 454 



Inferior Oolite, its limits, 2 ; division, Deslongs- 

 champ's views on, 4 ; to begin with Sauzei 

 zone, 4 ; Hudleston's suggestion as to its 

 division, 4 ; strata in Dorset differ in short 

 distances, 8 ; thickness of, in South of Eng- 

 land, 9 ; diminution westwards in Dorset- 

 Somerset, 10 ; greatest thickness for South 

 England expected near Sherborne, 10 ; maxi- 

 mum developments of, 10 ; and Opalinum- 

 zone, 42 ; Limestone, 168 ; and Toarcien, 173 ; 

 time of, divided into twenty-three hemerae, v ; 

 deposits of, limits of, v ; and acme, cxcix ; 

 giant of, cc ; extent of ; and upper Lias, cciv ; 

 (G5), ccv ; Limestones, ccv ; sands, 113, ccv 



Inferior Oolite Series, 113, 175, ccv 



inflata, ffidania, Suppl., PI. 21, figs. 13-15, p. cviii 



infra-oolithica, Terebratula, 52, xxxvii 



Infra-Oolitic Marls, 4 



Inheritance, Earlier, ccii ; law of, 134, 224 ; theory 

 of diminishing rate of progress, 224 ; modi- 

 fying action, 288 ; partial or modifying action 

 of, 290 ; unequal action of, 290 ; modified 

 action, examples of, 295, 296, 297, 313 ; see 

 development, tachygenesis 



Inner margin, recession of, 36 



inops, Reynesella, Suppl, PI. 21, figs. 37-39, 

 p. ex 



Inornatilobate, v 



Insigne group, 143 



insigne, Hammatoceras, 13, 45, 46, 128, 143, 164, 

 165, 220 



Insignes, 13 



insignis, Ammonites, 13, 129, 279 



insigni-simile, Catulloceras, PI. 39, figs. 12-14, p. 

 278 



insigni-similis, Ammonites, 278 



insignoides, Sonninia, 315 



Interlobular cells, 373 



intermedia, Reynesia, PI. 11, figs. 2, 3, p. 23 

 (Lioceras decipiens var. intermedium) ; Suppl , 

 PI. 18, fig. 27, p. ciii 



intermedium, iEgoceras, 232 



Intersection of ornament, cc 



Intra-axial, 369 



Inverted triangle, 360 



Involution, how attained, 134 



Ironshot, Bed, 293 ; beds, date of, ccviii ; lime- 

 stone, xxxv ; limestone, date of, ccvii ; marly 

 stone, xxxv ; Oolite, 63 ; Oolite, date of, ccvi ; 

 see White ironshot 



Irregulari-ornate, iv, viii 



irregularis, Sonninia, PI. 61 ; PI. 98, fig. 6 ; pp. 

 320, 389, 417 



iserensis, Ammonites, xvii 



iserensis, Denckmannia, Suppl., PI. 2, figs. 1, 2, p. 

 xvii 



iserensis, Lillia, xvii 



Isosceloid terminal lobule, 364 



Italy, 220, clxx 



Jackson, Dr. R. T., cxcix 



Jamesoni, Ammonites, 234, 268, 283 ; and Poly- 

 morphites, Haxig's opinion on, 268 ; Dumor- 

 tieria, as ancestor of Levesquei, reasons 

 against, 161 



Jamesoni-zone, 132, 162, 221, 283 



Java, 454 



Jermyn Street Museum, 258, clxxxii 



Jones, Prof. T. Rupert, and change of names, 286 



Jorquera, Chili, 258 



Judd, Prof. J. W., on Gryphite grit, 91 ; on 

 locality of A. Murchisonse, lxx 



jugifer, Ammonites, 82 



jugosa, Haugia, PI. 23, figs. 11-13, p. 149; Suppl., 

 p. xxv 



jugosa, Haugia, PL 24, 25, fig. 1 (PI. 28, figs. 1-3?) 

 p. 149, see grandis, Haugia 



jugosa, Haugia, x, xi, xii, xxvi ; and H. variabilis, 

 comparative dimensions, 150 



