181 



Hem 



Hele (Devon), section, xx. 448. 

 Helesborough (Devon), Middle Devon, of, 



xxiii. 607. 

 Heliastrcea altissima, sp. nov., xxiv. 12 & 



pi. ii. 



cyathiformis, sp. nov., xxi. 8 & pi. i. 



exsculpta, xxi. 8. 



insignis, sp. nov., xxiv. 19 & pi. i. 



tasmaniensis, sp. nov., xxxii. 342 & 



pi. xxii. 

 Helicoceras hibemicum, sp. nov., xxi. 37 



<fe pi. iii. 



Robertianus, xxxi. 289. 



Helicopora, gen. nov. of Amer. Fene- 



stellids, xxxix. 30-38 & pi. iv. 

 archimediformis, sp. nov., xxxix. 34 



& pi. iv. 

 latispiralis, sp. nov., xxxix. 32 & 



pi. iv. 



■ Ulrichi, sp. nov., xxxix. 33 & pi. iv. 



Helicotoma Naresii, sp. nov., xxxiv. 602 



& pi. xxvii. 

 Heligoland, *pres. & former extent of, iv. 



(Part 2) 32 ; Neocom. in, xxvi. 334. 

 Helioccenia, gen. aff. of, xli. 181, xlii. 



135. 



oolitica, sp. nov., xli. 181 & pi. v. 



Heliolites megastomus, xxxiv. 581. 



subrotundus, vii. 171 & pi. ix. 



Heliopora c&rulea, xxxv. 94 & pi. viii. ; 



in New Hebrides, xlix. 228. 

 Helix, fr. Maj'ence Basin comp. w. recent 



spp., x. 283. 

 Alexandria sp. nov., viii. 198 & 



pi. v. 



Bestii, sp. nov., xiv. 148 & pi. x. 



bilamellata, viii. pi. v. 



Dawsoni, sp. nov., xxiii. 545 & 



pi. xv. 



Buboisii, sp. nov., xiv. 147 & pi. x. 



incarnata, viii. 190 tigs. 



ruderata, viii. 190 figs. 



spurca, viii. pi. v. 



Helland, A., Ice-fjords of N. Greenland, 



& Format, of Fjords, Lakes, & Cirques 



in Norway & Greenland, xxxiii. 142-176 



figs. 

 Helle (Norway), *felspar-quarry at, xi. 



(Part 2) 12 fig. 

 Helm Gill (Westmoreland), mica-trap 



dykes descr., xxxv. 176 ; H. Knot, 



Coniston Grits of, xxxiv. 883. 

 Helmeeseiv, G. voBr,*MiddendorfFsGeol. 



Obs. in Siberia, iv. (Part 2) 49-50. 

 , ^Marine Shells found in Sands 



of Karakum Desert, xxv. (Part 2) 8. 



, Carb. Rocks of Donetz, & 



Granite & Granitic Detritus of Neighb. 

 of St. Petersburg [abs.J, xx. 444-445. 



, obituary of, xlii. Proc. 48. 



Helmeth Hill (Shropshire), pre-Cambr. (?) 

 of, xxxv. 657; xlvii. Ill, 121. 



Helminthites defined, xiii. 204 ; in quartz- 

 rock of Sutherland, xv. 418 & pi. xiii. 



Hehnintkochiton eburonicus, iii. 49 fig. 



Griffi.th.ii, gen. & sp. nov., iii. 49, 50 



fig. 



priseus, iii. 49 fig. 



Helmsgill (Yorks), section to Middleton 



Fell, ii. 120. 

 Helmstadt (Brunswick), *Lr. Oligoc. 



fauna of, xxii. (Part 2) 17-19. 

 Helopidium Neoridas, sp. nov., x. pi. 



xvi. 

 Helopium Agabus, sp. nov., x. pi. xiv. 

 Helpstone (Lines), Oolites nr., xxix. 271. 

 Helsby Hill (Cheshire), sections, xxxix. 



94. 

 Helston (Cornwall), altered dolerite of, 



xxxii. 422 ; serpentine nr., xxxiii. 914 ; 



microsc. char, of same, xxxiii. 919. 

 Helvellyn, section to Bowness, v. 124 ; 



quartz-felsite dyke on, fluid-cavs. in, 



xxxi. 585 & pi. xxx. 

 Hematite, see Haematite. 

 'Hemera,' ' Hem eras,' xlix. 481 et seqq.; 



table showg. changing thickn. of de- 

 posits, xlix. 506. 

 Hemiaspis limuloides, gen. nov., xxi. 490— 



492 & pi. xiv. ; & allied forms, xxiii. 31 



& pi. i. 

 Hemiaster cenomanensis, xliii. 152, 153. 



Cotteaui, xx. 483. 



Forbesii, sp. nov., xi. 463 & pi. xii. 



scillce, xx. 483. 



similis, xxi. 355 ; xliii. 152, 153. 



Hemicardium Austeni, sp. nov., i. 244 & 



pi. viii. [3]. 

 Semicidaris, ambulacr. plates in, xli. 



436. 

 crenularis, ambulacr. plates in, xli. 



439, 440 figs. 

 granulosa, ambulacr. plates in, xli. 



442 fig. 

 intermedia, ambulacr. plates in, xli. 



437, 438, 442 figs. 

 Semicladodus unicuspidatus, gen. & sp. 



nov., xl. 620 & pi. xxvii. 

 *Semicosmites piriformis, ii. (Part 2) 34 



& pi. iii. 

 Hemingford (Hunts), section to Houghton, 



ix. 272 ; H. Abbots, section to Godman- 



chester, ix. 272. 

 Hemipatagus transf. to Lovenia, xxxiii. 



56. 

 Forbesii, xxxi. 444 & pi. xxi. 



Woodsii, sp. nov., xxxi. 445 & 



pi. xxi. 



Hemipedina, ambulacr. plates in, xli. 

 422. 



Bowerbanlcii, ambulacr. plates in, 



xli. 423. 



• corallina transf. to Pelanechinus, 



xxxiv. 924. 



Jardinii, ambulacr. plates in, xli. 



423 fig. 



marchamensis , ambulacr. plates in, 



xli. 424 fig. 



tuberculosa, ambulacr. plates in, xli. 



425 fig. 

 Hemithyris angustifrons, vii. 171 & 



pi. ix. 

 Semitoma (?) multiradiata\um\ sp. nov., 



xvi. 178 & pi. viii. 

 Hemitrypa reg. as parasite upon Fenes- 



tella, xxxv. 282. 



