Isc 



202 



Ischadites Lindstrcemi, sp. now, xl. 839 & 



pi. xxxvi. 



Murchisonii, xl. 838. 



tessellatus, xl. 839. 



Ischia, Pleistoc. of, xxxiv. 196; list of 



foram. fr., xxxiv. 197. 

 Ischim (Siberia), section across valley, xxx. 



491. 

 Ischnacanthus, gen. char, of, xx. 419. 



gracilis, xx. 419. 



Ischyodus, iii. 351, 352 & pi. xiii. 



brevirostris, xxxii. 327 & pi. xxi. 



Johnsoni, ref. to Prognatlwdus, 



xxviii. 236. 

 orthorhinus, sp. nov., xxvii. 275-279 



& pi. xiii. 

 Ischypterus prop, for Palceoniscus, iii. 



277; gen. char, of, vi. 8; Palceoniscus 



fultus & all. sp. transf. to, xxxiii. 559. 



latus, xxxiii. 560, 561. 



Ischyrosawrus, gen. nov., xxv. 386-389 & 



pi. xvi. ; comp. w. Ceteosaurus humero- 



cristatus, xxx. 16. 

 Isis, gen. char. & distrib. of, xxxi. 673, 674 ; 



specim. fr. Cape Otway & Oawaru, xxxi. 



673, 675 & pi. xxxviii. 

 Islands, oceanic, vole. orig. of, xlvi. Proc. 



61. 

 Island Point (New Zealand), Moa-deposit 



nr., vi. 327, 334 et seqq. 

 Islay (Hebrides), section of, xvii. 206. 

 Isleham (Suffolk), sections descr., xliii. 553, 



554. 

 Isleworth (Middlesex), well-section at, x. 



146. 

 Islington (London), list of Eoc. foss. fr., 



x. 415. 

 Islip (Northants), list of Cornbrash foss., 



xxix. 281. 

 Isoarca Agassizii, xxxi. 300 & pi. xv. 



capitalis, sp. nov., xxxix. 523 & 



pi. xviii. 



texata, xxxix. 523 & pi. xviii. 



Isobaric map of Equat. E. Africa, 1. 529. 

 Isocardia angulata at Speeton, xlv. 616. 



(?) clarissima, xv. 14 & pi. iii. 



lunulata, xxvi. 501 & pi. xxxiv. 



• (?) ornata, sp. nov., i. 242 & pi. vii. 



IsocMlina cristata, xlvi. 23 & pi. i. 



(?)fabacea, sp. nov., xlvi. 22 & pi. ii. 



gregaria, xlvi. 22 & pi. i. 



lineata, sp. nov., xlvi. 21 & pi. ii. 



■ Seelyi, xlvi. 22 & pi. i. 



(?) sp. (Palfeoz.), xlvi. 23 & pi. i. 



Isocolum granulatum, gen. & sp. nov., 

 xxiv. 501. 



' Isochthonal,' term prop., xiv. 97. 



' Isodiametric lines ' repr. distrib. of sedi- 

 mentary rocks, xviii. 127, 135 et seqq. & 

 pi. vii (map). 



Isoetoides, gen. nov., in coal, xl. Proc. 59, 

 60. 



Isopoda fr. Lr. Purbeck, x. 385 & pi. xiv. ; 

 in relat. to trilobites, 1. 432. 



Isotelus Powisii (?), v. 150. 



Isothermal map of world, viii. pi. ii. ; 

 lines in N. hemisph., viii. 63 ; causes of 



deflection, etc., viii. 65 ; surfaces within 



earth, changes of, xxiv. 276. 

 Istria, *geol. of, xvi. (Part 2) 12-14; *Eoc. 



foss. fr., xix. (Part 2) 31; *Liburnian 



group of, xxviii. (Part 2) 12; # foram. & 



other foss. fr., xxix. (Part 2) 3. 

 Italy (S.), *mollusca of, i. 95-111, ii. 



(Part 2) 1-17; 'earlier vole, rocks' of, 



vi. 281-310; recent upheaval of, vi. 381 ; 



progr. of geol. in 1855, xii. p. xciii ; 



glacial orig. of lakes, xviii. 198; (N.), 



*Nummul. of, xxii. (Part 2) 19-23; 



Upper Eoc. cheilostomata f r., xlvi. Proc. 



123, xlvii. 1-34 & pis. i.-iv. ; cyclosto- 



mata fr., xlviii. 153-162 & pi. iii.; 



foundat. of Geol. Surv., xxiv. p. xl; 



*geol. struct, of Peninsula, xxviii. (Part 



2) 8-10 ; no evid. of glacial erosion in, 



xxx. 468 ; changes of level along W. 



shores of, xlvi. Proc. 122. 

 Itchingswell (Hants), basem.-bed of Lond. 



CI. at, vi. 259 w. section. 

 Itfer Beds (Ordovic.) in Esthonia, xxxviii. 



522. 

 Ithaca Group (Devon) of N. Y. State, xiv. 



389. 

 Ithm, Wadi (Sinaitic Peninsula), igneous 



rocks of, xxxi. 13, 19. 

 Itschitchegi Dagh, see Antitaurus. 

 Ivel Valley (Beds), Pleistoc. gravel in, 



xxxviii. 675. 

 Ives Head (Leicester), section to High 



Towers, xxxiii. 768 ; banded grits of, 



xxxiii. 775. 

 Ivrea (Piedmont), ancient glacier of, xviii. 



185, 199 ; Tertiary nr., xl. 861. 

 Iwanai (Japan) coal-mines, xxiv. 511. 

 Ixelles (Belgium), Middle Nummul. of, 



viii. 338. 

 Izinhluzabalungu (S. Africa), Cret. rocks 



& caves of, xxvii. 61 ; list of foss. fr., 



xxvii. 62. 

 Izu Prov. (Japan), augite-andesites fr., xl. 



442. 



J. 



Jabonero, Arroyo de (Andalusia), section, 



xv. 596 ; Tertiary of, xv. 598. 

 Jack, R. L. (& R. Etheridge Jr.), 



Plants in Lr. O. R. S. nr. Callander, 



xxxiii. 213-222 figs. 

 ■ (& J. Horne), Glacial Drift 



in N.E. Carpathians, xxxiii. 673-681. 

 Jack's Hill (Essex), Westleton Shingle on. 



xlvi. 135, 136. 

 Jackson (Mississippi) section to Vicks- 



burg, iv. 16 ; Eoc. of, iv. 15. 

 Jacksonboro' (Georgia), Eoc. of, i. 438- 



410 & section. 

 ' Jackstones ' at Merthyr Tydvil, ii. 131. 

 Jade, occurr. in Karakash Valley, xxx. 



568-570. 

 Jaeger, G., *Pygopterus lucius & Ar- 



chegosaurus Dechenii, vii. (Part 2) 34. 

 Jaegersborg (Norway), sections at, xi. 167, 



173, 174. 



