Die 



116 



DicJcsonia (coniifolia ?) comp. w. Spheno- 



pteris, vii. 180 & pi. xii. 

 Diclitodus scitulus, xl. 623 & pi. xxvii. 

 Diclonius mirabilis, inf. view of extrem. 



of mandible, xl. Proc. 49. 

 Dicranoceros, subgen. of Cervus, xii. 



224. 

 Dicranograptus Clingani, zone of, xxxiv. 



311. 

 Dicranograptus-shsiles nr. Haverfordwest, 



xii. 478, 487 ; in Caerrnarthen, xlix. 



169. 

 Dicranophyllum australicum, sp. nov., 



xxxvii. 306 & pi. xiii. 

 Dicroceros elegans, xxxiv. 403. 

 Dictionary, English, applic. fr. Philological 



Soc, xxxvi. Proc. 5. 

 Dictyocaris, xix. 90 fig., 91. 

 Dictyoqraptus cancellatus, sp. nov., xxxi. 



668 & pi. xxxvi. 

 ■ Somfrayi, sp. nov., xxxi. 668 & 



pi. xxxvi. 



irregularis, xxxi. 668 & pi. xxxvi. 



sp. (Lr. Llandeilo), xxxi. 669 & 



pi. xxxvii. 

 Dictyomitra australis, sp. nov., xlix. 224 



& pi. v. 

 triangularis, sp. nov., xlix. 224 & 



pi. v. 

 Dictyonema, gen. name discarded, xxxi. 



667. 

 corrugatellum, sp. nov., xxxvii. 172 



& pi. vii. 

 delicatulum, sp. nov., xxxvii. 172 & 



pi. vii. 

 social e in Upper Lingula-Yl&gs, 



xxxvii. Proc. 82; in Lr. Tremadoc, 



xxxvii. Proc. 93. 

 venustum, sp. nov., xxxvii. 171 & 



pi. vii. 

 Dictyonema -shales on Malvern Hills, xxi. 



92, xxxiii. 660, xxxvii. Proc. 82 ; D.-beds 



at Pedwardine, xxxiii. 659 ; in Cambr. 



of Baltic provs. of Russia, xxxviii. 517 ; 



D.-zone (Girvan success.), xxxviii. 601. 

 Dictyophyton hamiltonense, xxxvii. 303. 

 Dictyopteris, gen. char, of, xv. 81. 



obliqua, sp. nov., iii. 427 & pi. xxi. 



(?) simplex, sp. nov., xxiii. 141 & 



pi. vi. 

 Dictyopyge, Pal&oniscus catopterus 



transf. to, xxxiii. 565. 

 Dictyopyge macrura, gen. nov., iii. 275 



& pis. viii.-ix. 

 Dictyostroma, char, of, xxxv. 53, 56. 

 Dicynodon fr. S. Africa, i. 318-322, xvi. 



49 & pi. i. ; deriv. of Oudenodon & JEndo- 



thiodon fr., xxxv. 563 ; digital bones of 



fore-paw comp. w. those in Platypodo- 



saurus, xxxvi. 421 & pi. xvii. 

 Dicynodon Murrayi, sp. nov., xv. 555, 649 



& pis. xxii.-xxiii. 

 tigriceps, sp. nov., cranium, xi. 532 ; 



other bones of same, xi. 541. 

 Dicynodon- or Karoo format., its forest- 

 zones, xxvii. 523 ; in S. Africa, xi. 2 et 



seqq., xv. 194-195. 



Dicynodontia, struct, of skull in, xv. 654. 

 Didcot (Berks), section fr. nr. ry. -station 



to hills above Chilton, xlviii. pi. vii. 

 Didymograptus, gen. char, of, xxiv. 133. 



affinis, xxxi. 645 & pi. xxxiii. 



bifidus, xxiv. 136 ; xxxi. 646 & 



pi. xxxiii. 

 caduceus, sp. nov., ix. 87 fig. ; xxiv. 



133. 



euodus, sp. nov., xxxi. 645 & pi. xxxv. 



extensus, xxxi. 642 & pi. xxxiii. 



furcillatus, sp. nov., xxxi. 649 & 



pi. xxxv. 



geminus, xxiv. 134 & pi. v. 



indentus, xxxi. 647 & pi. xxxiii. ; var. 



nanus nov., xxxi. 647 & pis. xxxiii., 



xxxv. 



Murcliisoni, xxxi. 648 & pi. xxxv. 



JSficholsoni, sp. nov., xxxi. 644 & 



pi. xxxiii. 



nitidus, xxiv. 135. 



patulus, xxiv. 135; xxxi. 644 & 



pi. xxxiii. 



pennatulus, xxxi. 643 & pi. xxxiii. 



serratulus, xxiv. 136. 



sextans, xxiv. 134. 



sparsus, sp. nov., xxxi. 643 & 



pi. xxxiii. 



V-fractus, xxiv. 134. 



, var. spp., xix. 136 et seqq. figs. 



Didymograptus-shales in Benan Burn, 



xxxviii. 554 ; in neighb. districts, xxxviii. 



560 et seqq. ; nr. Haverfordwest, xii. 477, 



486 ; D.-beds in Caerrnarthen, xlix. 168. 

 Didymopliyllum reniforme, sp. nov., xviii. 



309 & pi. xiii. 

 Dieghem (Belgium), section in Num- 



mulitic at, viii. 339. 

 Dieppe (Normandy), section nr., xi. 117 ; 



Tert. cliff-sections W. of, descr., xxvii. 



263. 

 Diest (Belgium), sands & iron-sandst. of, 



viii. 293-295 w. list of foss. 

 Diestien system, xxii. 232, xxvii. 477 ; of 



Cassel, viii. 294, 324. 

 Differential movem. of glaciers, xxxix. 66, 



70. 

 Differentiation of lavas, xlix. 539 ; of 



common magma, originat. var. erupt. 



rocks in Gran district, 1. 26, 31, 35 ; the 



same contrasted w. different, descr. at 



Carrock Fell, 1. 326 ; different, in situ, 



1. 656. 

 Diglomerate, term prop., xliii. 520. 

 Dignaes (Norway), olivine-gabbro-diabase 



of, chem. anal., 1. 19, 20. 

 Digoed (N. Wales), spherulitic rhyolite 



of, xiii. 185 et seqq. & pi. ix. 

 Digswell (Herts), section to Hatfield, xlvi. 



138. 

 Dikelocephalus, distrib. of genus in time, 



xxvii. 395. 

 Dileghem (Belgium), section, viii. 332. 

 Diljubba Mt. (Upper Panjab), section, xxx. 



75. 

 Dillee, J. S., Geol. of Troad, xxxix. 627- 



633 w. map. 



