231 



Lla 



Llanberis route (Snowdon),microsc. struct. 



of felstones on, xxxi. 401, 402. 

 Llanberis Slates, use of term def., viii. 



146, ix. 168 ; contemp. vole, rocks, xlvii. 



Proc. 95 et seqq. 

 Llanbetbian Quarries (Glamorgan), section 



descr., xxiii. 518; list of foss. fr. same, 



xxiii. 519. 

 Llanbrynrnaer (Montgomery), vert, section 



at, facg. xxxvii. 164. 

 Llanddeiniolen (Caernarvon), microsc. 



struct, of rhyolite, xxxiv. 145; section 



nr., xxxv. 686 ; do. to Llyn Padarn, xl. 



198. 

 Llandegle (Radnor), foss. fr. Lr. Wenlock 



Sbales at, iv. 299. 

 Llandeilo (Caermarthen), section to Aber- 



aeron descr., xxxvii. 158 ; vert, section 



at, facg. xxxvii. 164. 

 Llandeilo Beds, in Shropshire, x. 64 et 



seqq. ; equivs. in Scandinavia, xiv. 37, 39 



et seqq.; crustac. track in, xviii. 347, 



xix. 92-95 fig. ; grouped w. Caradoc, xix. 



p. xxxviii ; (Lr.) foss. in Skiddaw Slates, 



xxii. 481 ; of Scotland, list of grapto- 



lites fr. Upper, xxviii. 222. 

 Llandeilo Flags, ii. 127, 128; in S. Wales, 



iii. 154, iv. 296 et seqq.; equiv. in S.E. 



Scotland, vi. 56, vii. 155 ; in N. Wales & 



Shropshire, ix. 163 et seqq. 

 Llandeilo Group nr. St. David's, xxxi. 167- 



195 & pis. viii.-xi (map, sections, & 



foss.); history of name, xxxi. 170; 



graptolites of, xxxi. 631-672 & pis. 



xxxiii.-xxxvii. ; correl. w. Glenkiln 



Shales, xxxiv. 334 ; of Britain, classif . & 



fauna of, xxxvii. Proc. 116 ; numer. anal. 



of last-named, xxxvii. Proc. 123, 126 ; 



vole, rocks in Caernarvon & Anglesey, 



xlvii. Proc. 117 ; in Scotland, xlvii. Proc. 



146; in Ireland, xlvii. Proc. 150; (Lr.) 



andesitic ash nr. Builth, 1. 572 ; in 



Moelwyn district, xlvii. 376. 

 Llandeilo Limestone, supp. Onchus in, 



vii. 264; in neighb. of Haverfordwest, 



xli. 477, 486; in Caermarthen, xlix. 



168. 

 Llandovery Group, defined, xiv. 50 ; equivs. 



in Scandinavia, xiv. 37, 39 et seqq. ; 



rocks of Malvern, xvii. 157 figs., xxi. 



94; relat. to beds above & below, xix. 



p. xxxix ; equivs. in Galway, xxii. 512 ; 



Lr., correl. w. Birkhill Shales, xxxiv. 



337; foss. fr. Pen-y-lan, xxxv. 479; 



do. fr. Cae Castell, xxxv. 484, 486; 



(Upper), microsc. struct, of quartzite, 



xxxvii. 9 ; LI. Gr. of Caerdigan, xxxvii. 



141-170 w. sections; Cladophora fr. 



same, xxxvii. 171-177 & pi. vii. ; fauna 



of, xxxvii. Proc. 142, 150; numer. anal. 



of same, xxxvii. Proc. 150, 159; (Lr.) 



in neighb. of Haverfordwest, xli. 486, 



489 ; LI. Gr. of Corwen, xlix. 426 ; LI. 



ostracoda, xlix. 296, 302, 304. 

 Llandowror (Caermarthen), xlix. 169, 170. 

 Llandudno (Caernarvon), arboresc. nat. 



copper at, xv. 109. 



Llanelidan (Denbigh), section to Pistill 



Rkaiadr, ii. 288. 

 Llanerchymedd (Anglesey), section betw. 



Llangwyllog and, descr., xxxvii. 219 ; 



do. to Mynyddmawr & Pencefn, xxxviii. 



21; hallefiinta fr., xl. 202; descr. of 



rocks betw. Bodafon Mt. and, xliv. 



499. 

 Llanfaelog (Anglesey), ■ schists ' of, xxxv. 



303, 307 ; Cambr. & pre-Cambr. of, xl. 



191, 200 et seqq. ; section to Tywyn, fig. 



& descr., xl. 573. 

 Llanfair (Merioneth), section to nr. Aran 



Mowddwy, iii. 144. 

 Llanfairfechan (Caernarvon), sections nr., 



xxxix. 11.2. 

 Llanfechell Grits (Anglesey), xxxvii. 223, 



234. 

 Llanfihangel (Anglesey), section to Aran 



Mowddwy, i. 11 ; Palaeoz. conglom. of, 



xl. 572. 

 Llanfyllin (Montgomery), phosphorite- 

 deposits nr., xxxi. 357 et seqq. 

 Llangaffo (Anglesey), section in ry.-cutting 



at, xliv. 505. 

 Llangan (Glamorgan), Sutton Stone at, 



xxiii. 204. 

 Llangefni (Anglesey) synclinal, xxxvii. 



213, xliv. 487; LI. conglom. & shales 



in Archaean of Anglesey, xxxvii. 214, 



235. 

 Llanglydwen (Caermarthen), xlix. 168, 169. 

 Llangollen (Denbigh), Upper Silur. of, i. 



17, ii. 283-286; Lr. Silur. of, ii. 286- 



288; erratics in neighb. of, xxix. 357, 



xxx. 714, 720, & map ; high-level gravel 



& sand nr., xxxvii. 363; do. betw. LI. 



Vale & Minera, xxxvii. 359, xxxviii. 185 ; 



detailed descr. of same, xxxviii. 186. 

 Llangristiolus grits & slates in Archaean of 



Anglesey, xxxvii. 214. 

 Llangwnadl (Caernarvon), diorite, etc., nr., 



xliv. 448. 

 Llangwyllog (Anglesey), limest. of, xxxv. 



63; chem. anal, of same, xxxv. 64; 



Arenig Beds at, xxxvi. 238 ; section 



betw. Llanerchymedd and, descr., xxxvii. 



219. 

 Llangynog (Caermarthen), xlix. 170. 

 Llangynog (Montgomery), section to 



Arenig Fawr, i. 7; sections at Cwm- 



gwynen & Berwyn phosphorite-mines, 



xxxi. 358, 360. 

 Llanhowel (Pembroke), section to nr. 



Newgate, facg. xxxiv. 166; hallefiinta 



of, xxxv. 290, 293. 

 Llanllyfni (Caernarvon), section, ii. 301; 



felsites & conglom. betw. Bethesda and, 



xlix. 441-466 figs. 

 Llanos of Venezuelan Guiana, sandst. of, 



xxv. 348. 

 Llansaintffraid (Denbigh), section to 



Welshpool, i. 13 ; section to Cyrn y 



Brain, i. 17. 

 Llanvirn (Pembroke), Upper Arenig rocks 



at, xxxi. 173, 174; graptolite-fauna of, 



xxxi. 635, 637. 



