Dio 



118 



Diorite group of rocks, xli. Proc. 72. 



Diorites of Tuscany, xvi. 481 ; of Malvern 

 Hills, xxi. 77 et seqq., xliii. 491, 493 et 

 seqq. & pis. xix.-xx., 526 ; relat. of same 

 w. Galway granite, xliii. 518 et seqq. figs. ; 

 of Carrick, xxii. 526 ; assoc. of same w. 

 serpentine, xxii. 529 ; in Morocco, xxviii. 

 95 ; aurif, xii. 287, 1. Proc. 9 ; do., of 

 Gympie & Granite Creek, xxviii. 292, 293, 

 303 & pi. x., w. chem. anal. ; assoc. w. 

 syenite in Egypt, vii. 12; w. diamantif. 

 rocks in S. Africa, xxx. 407 ; w. copper 

 ores in Newfoundland, xxx. 740 et 

 seqq.-, dyke at junct. of R. Gilbert & 

 R. Robertson, xxviii. 297 fig. 



Diorites (?) of Miton Hill & Round Knott, 

 xxxii. 16, 21 ; N. of Brazil Wood, xxxiv. 

 224; (micaceous) in Kendal district, 

 xxxv. 169, 170; of Warwick coalfield, 

 xxxv. 637-642 ; in Shetland Is., xxxv. 

 782 ; of Upata, xxxv. 584, 589 ; nr. Loch 

 Maree, xxxvi. 105 ; (?) of Knolls Ridge, 

 xxxviii. 122, 125 ; of Guernsey, xl. 407, 

 423 ; of Japan, xl. 454, 455 ; assoc. w. 

 gold in Transvaal, xxxiii. 881, 882 ; do., 

 in Australia, xxxiv. 431 et seqq. & pi. 

 xvii. ; dykes in pre-Cambr. of Bohemia, 

 xxxvi. 599. 



Diorites, so-called, of Little Knott, xli. 

 511-515 & pi. xvi.; (orbicular), orig. of 

 struct, expl., xli. Proc. 85 ; ' eyes ' formed 

 in hornbl.-schist by shearg. of dolerite- 

 dyke intrus. in gneiss, xliv. 392 ; dior. 

 of Sarn district, xliv. 447; in Central 

 Anglesey, xliv. 497; in Leicester brec- 

 cias, xlv. 26 ; prod, of secondary minerals 

 in, by shearg., xlv. 478 & pi. xvi., 482; 

 passage into gneisses, xlv. 492, xlix. 

 402; (intrus.) of Lizard, xlv. 534; of 

 Western Is., xlvi. 360, 365 ; of Korea, 

 microsc. struct, of, xlvii. 178 ; of Gara- 

 bal Hill & Meall Breac, xlviii. 104 et 

 seqq. ; dykes in Lydenburg & De Kaap 

 goldfields, xli. 588. 



Diorite-gneiss, duplex, of Malvern Hills, 

 xliii. 532, xlix. 413. 



Diorite-porphyrite fr. Japan, xl. 455. 



Diorite-tuff (?'), altered, of N. Hill (Mal- 

 vern), xliii. 490 & pi. xix. 



Dioritic picrite of White Hause & Great 

 Cockup, xlviii. 508-513 w. map ; dior. 

 rocks in Bolivia & Peru, xvii. 29 ; of Ayr 

 coast, xxxiv. 772. 



Dip of cleavage-planes, iii. 89. 



Dip-joints, xv. 87. 



Diphyphyllum, occurr. in Lr. Carb. of 

 Scotland, xliii. 33-39 & pis. iv.-v. 



BlacJcwoodi, sp. nov., xliii. 36 & 



pi. iv. ; var. approximation, xliii. 36 

 & pi. iv. 



concinnum, xliii. 35 & pi. iv. ; var. 



furcatum, xliii. 36 & pi. iv. 



cylindricum, sp. nov., xliii. 36 & 



pi. iv. 



gracile, xliii. 37 & pi. v. 



latiseptatum, xliii. 37 & pi. v. ; var. 



qiganteum & var. interruptum, xliii. 37 



& pi. v. 



Diplacanthus comp. w. Ischnacanthus, 



xx. 420. 



gibbus, xvi. 123. 



longispinus, scales of, xx. 418. 



perarmatus, xvi. 123. 



Diplacodus, gen. nov., xl. 632. 



bulboides, sp. nov., xl. 633 & pi. xxvii. 



Diplaspis, discov. in Canada, xlviii. 546. 

 Diploceras, gen. nov., xii. 381 ; name 



withdrawn, xiv. 177. 

 Diplocoenia, gen. nov., xxiv. 20. 



monitor, sp. nov., xxiv. 21 & pi. i. 



Diplodus incl. in Pleuracanthus, xxxvi. 



321. 



gibbosus, xxxii. 336. 



Diplograptus, gen. char, of, xxiv. 137 ; 



zone of, in Bohemia, xxxvi. 607 et seqq. 

 acuminatus, zone of, xxxiv. 318, xliv. 



680. 



angustifolius, xxiv. 525 & pi. xix. 



antennarius, xxiv. 139. 



bullatus, sp. nov., vii. 174 & pi. x. 



cometa, zone of, xxxiv. 323. ■ 



confertus, sp. nov., xxiv. 526 & 



pi. xix. 



dentatus, xxxi. 656 & pi. xxxiv. 



foliaceus, vii. 64 & pi. i., xxxi. 656 & 



pi. xxxv. 

 folium, vii. 63 & pi. i., xxiv. 524 & 



pi. xix. 

 modestus-shales in Penwhapple Glen, 



xxxviii. 631 ; in Saugh Hill area, xxxviii. 



634. 



■ mucronatus, xxiv. 139. 



nodosus, vii. 63 & pi. i. 



palmeus, xxiv. 523 & pi. xix. 



pennatus, vii. 62 & pi. i. 



pristiniformis, xxiv. 140 & pi. v. 



pristis, xxiv. 527. 



putillus, xxiv. 527 & pi. xix. 



■ rectanqularis, vii. 63 & pi. i. 



tamariscus, sp. nov., xxiv. 526 & 



pi. xix. ; xliv. 671, 681, 684. 

 teretiusculus, viii. 389 & pi. xxi., 



xxiv. 139 & pi. v. 



tricornis, xxxi. 658 & pi. xxxv. 



vesiculosus, sp. nov., xxiv. 527 ; zone 



of, xxxiv. 320. 



sp., vii. 64 & pi. i. 



Diplopodia, ambulacr. plates in, xli. 443. 

 Malbosii, ambulacr. plates in, xli. 447 



versipora, ambulacr. plates in, xli. 



444 et seqq. figs. 

 Diplopterus not at Dura Den (?), xviii. 



435. 



gracilis, xvi. 123. 



macrolepidotus, xvi. 124. 



Diploria crassolamellosa, xxi. 7. 

 Diplostylus, gen. nov., xviii. 346, xix. 



76. 

 Dawsoni, sp. nov., xix. 77, 79 fig. ; 



contrasted w. Necroscilla Wilsoni, 



xxxv. 551, 552. 

 Diplotegium retusum, sp. nov., xxii. 164 & 



pi. xiii. 

 Diploxylon fr. Coal-format, of Nova Scotia, 



xxxiii. 836-842 figs. 



