Arc 



16 



Area subtetragona, sp. nov., vi. 318 & 

 pi. xxx. 



Trinitaria, sp. nov., xxii. 583 & 



pi. xxvi. 



■ mnzambaniensis, sp. nov., xi. 460 & 



pi. xiii. 



Arcestidse, enum. of genera of, xxxviii. 

 Proc. 229. 



Arch, ' Natural,' in Eed Sandst. on Loch 

 Greinord, xiv. 168 fig. 



Archsean of Shropshire, xxxv. 643-669, 

 xxxviii. 119-126 w. map ; of Anglesey, 

 xxxvii. 210-232 & pi. viii (map & 

 sections), xxxix. 476, xl. 567-589 figs. ; 

 age of Lizard hornhl. -schist, xxxix. 23 ; 

 age of Assynt Series, denied, xxxix. 359 ; 

 do. of S. Devon schists, xl. 23. 



Archsean, newer, of Shropshire, derived 

 fragm. in, xlii. 481-485 ; microsc. 

 struct, of older Arch, rocks, xlii. Proc. 

 91 ; orig. of same, xlii. Proc. 110 ; 

 transit, forms & correl. of, xlii. Proc. 

 112, 113 ; in Britannv, xliii. 319 ; in 

 Sark, xliii. 334; in N.W. Highlands of 

 Scotland, xliv. 387 : metamorph. of 

 same, xliv. 429 ; section of Arch, gneiss 

 showg. thrust-planes, etc., xliv. 389 ; 

 igneous rocks intrus. in, xliv. 389 ; 

 (?) a°:e of perlitic felsites fr. flanks 

 of Herefordshire Beacon, xliv. 740-744 

 & pi. xvii.; of gneisses & schists of 

 Alps, xlv. 97; supp. Arch, rocks on 

 W. boundary of Longmynd massif, xlvi. 

 402 ; gneisses, etc. of Britain, xlvii. Proc. 



67. 

 Arcliceocalamites radiatus, comp. w. plant- 

 remains fr. Methil, xxxviii. 252. 

 Arcliceocidaris, gen. char, of, xxx. 311 & 



pi. xxiv. 



TJrii, xxxii. 39 & pi. iii. 



ArchEeocyathinse fr. S. Australia, xlix. 



Proc. 8. 

 Archceocyathus comp. w. JEozoon, xxi. 53 ; 



history of genus & all. forms, xlv. 126 ; 



mineral nat. of same, xlv. 129 ; mode 



of growth & struct, of same, xlv. 131 & 



pi. v. ; aff. of same, xlv. 138. 



Ichnusce, xlv. 132 & pi. v. 



profundus, xlv. 126, 132 & pi. v. 



Archceoniscus Brodiei, xxxv. 349 & pi. xiv. ; 



xxxvii. 250. 



JEdwardsi, sp. nov., x. 385 & pi. xiv. 



Archceoniscus - limestone, diagr. showg. 



var. of strata betw. it & Cinder Bed, 



1. 57. 



Archceopteris gaspiensis, xxxvii. 307. 

 (?) sp. nov. (Devon.), xxxvii. 305 & 



pi. xiii. 

 Arcliceopneustes abruptus, gen. & sp. nov., 



xlviii. 163-169 & pi. iv. 

 ArchcBopteryx, its reptilian aff., xxx. 10, 



Archceoscyphia, gen. nov., xlv. 142 & 



minganensis, xlv. 142 & pl. v. 



Archceosphcerina, gen. nov., xxxii. 71, 73 & 

 pl. x. 



Archceoteuthis shown to he Pteraspis, 



xvii. 163. 

 Archangel (Russia), section on Dwina nr., 

 ii. 378 ; glacial drift hetw. Astrakan 

 and, xxx. 457. 

 Archegosaurus, aff. of, ix. 69, xiv. pp. ciii, 

 civ ; comp. w. Loxomma & Pholido- 

 gaster, xviii. 293, 294; comp. w. Anthra- 

 cosaurus, xix. 65, 67. 



*Dechenii, vii. (Part 2) 34. 



*minor, vi. (Part 2) 58. 



Aechiac, E. J. A. D. S. d' (& E. de 



Veexettil), ^Palseoz. Foss. of Asturias, 



ii. (Part 2) 65-68. 

 , Wollaston Medal awarded 



to, ix. p. xix ; obituary of, xxvi. 



p. xxix. 

 Archiulus xylobioides, xxv. 441. 

 Arctic, Silur. foss. fr., ix. 312-317 ; Arctic 



Archipelago, foss. & rocks from, xi. 536- 



541 ; flora showg. change of climatal 



condit., xxiv. pp. lxi et seqq. ; # Heer's 



descr. of foss. flora, xxv. (Part 2) 11 ; 



shells dredged off Shetland Is., xxv. 



8 ; ice, physics of, xxvi. 671-701 ; Ocean, 



recent Motalince from, xxviii. 116 ; 



mollusca in Scottish drifts, xxx. 321, 



322, 337. 

 Arctic Expedition of 1875, xxxi. p. lxiii, 



xxxii. Proc. 101 ; flora in Mioc. times, 



xxxii. Proc. 101 ; in Cret. & Jurass. 



times, xxxii. Proc. 103 ; geol. of Arctic 



lands visited by Nares Exped., xxxiv. 



556-567 & pl. xxiv (map) ; palseont. 



of same, xxxiv. 568-639 & pis. xxv- 



xxix. ; snowdrift deposits in Arct. reg., 



1. 475. 

 Arctogaeal prov. constit. in Triass. times, 



xxvi. 49 ; Mioc. fauna, etc. of, xxvi. p. Iv. 

 Arctomys marmota, *foss. in Styria, xxii. 



(Part 2) 30. 

 Ardara (Donegal) granite, chem. anal, of, 



xviii. 408, 409. 

 Ardassie Point (Sutherland), Coralline 



Oolite of, xxix. 175 w. list of foss. 

 Ardchek, Lake (Asia Minor), chem. anal. 



of water of, xiii. 186, 187. 

 Ardennes, axis of, prolong, under S. 



England, xxviii. p. lxxxii ; Upper Jurass. 



of Ard. dept., xxxvii. 501 ; vert, section, 



xxxvii. pl. xxvi. 

 Ardish (Armenia), section to Bavazid, xi. 



315, 342; do. to Bitlis, xi. 320,' 343. 

 Ardle, Strath (Perth), section descr., xvii. 



263. 

 Ardmalin (Donegal) granite, chem. anal. 



of, xviii. 408. 

 Ardmillan (Ayr) & Penwhapple, Grapto- 



litic Flagst. Series of, xxxviii. 584; A. 



shore, typical section, descr. & fig., 



xxxviii. 593, 595. 

 Ardmillan Beds of Penwhapple Glen, sec- 

 tion, xxxviii. 604 ; of Mulloch Hill, 



section, xxxviii. 618 ; gen. section, xxxviii. 



621. 

 Ardmillan Braes (Ayr), Girvan success. 



of, xxxviii. 589. 



