REPORT ON THE HEXAUTINELLIDA. 



507 



Commensals — Artinix, 292, 297 ; Aeya sporujiophila, 

 56 ; Anthozoa on Eurefe, 298 ; on Hijalnnema sic- 

 hohlii, 191 ; Ci'ustacnans, 56, 61; HyJrozoon, 96; 

 PaKomonid, 56 ; Palijthoa fafua on Hijalonenia, 

 183, 189; SfepJtOfiri/pJms w/'rahi/i'!, 98. 

 Connecting membrane, 47. 

 Connefttive -substance, 24. 

 Corhitella, 101. 



„ spociosa, 101. 

 (JoralliospongiK, 8, 57. 



CoscinoiJorida;, 12, 320, 396 ; distribution, 438. 

 Grateromorpha, Gray, 159, 161, 377. 

 Crateroimirplta meyeri. Gray, 161, 377 (PI. Ixi.). 



„ murraiji, n. sp., 164, 378 (PI. Ixiii.). 



„ iJderfelderi, n. sp., 164, 378 (Pi. Ixii.). 



„ fiimuht, n. sp., 166, 378 (Pis. Ixvii., 



Ixviii.). 

 Crozets Islands, Aranfhasais, 375 ; Aulocalyx, 176 ; 

 Baf/njdoru.% 153 ; Gaulophacus, 373 ; Cltone- 

 lasma lamella, 321; Farrea sp., 288; Holasciis, 

 368 ; Malacosarcus, 368 ; Stylocalyx, 384. 

 Cufl' of spicules, 65. 

 Curvature of rays, 170. 

 Cijathella, O. Schmidt, 14, 15. 

 Cyatlwphycus, 63. 

 Cyrtaulon, n. gen., 332, 400. 



„ su/sbeet, O. Schmidt, 333, 400 (PI. xcii.). 

 ,, solutus, n. sp., 333, 400 (PI. xcii.). 

 Cystispongia siiperstes, 0. Schmidt, 15. 

 Dadylocalyx (Stutchbury), 341, 342, 348, 402. 

 „ hoirerhanlni, Johnson, 343. 



,, i-fispiis, O. Schmidt, 346. 



,, heteroformis, Bvvk., 344. 



„ inasonis, Bwk., 344. 



{V) patella, n. sp., 350, 403 (PL c). 

 ,, polyliscus, Bwk., 344. 



,, iMtaforum (O. Schmidt), 348. 



,, prattii, Bwk., 343. 



,, piimicea, Gray, 344. 



,, pumiceuti, Stutchbury, 348, 403. 



■•.ubffloboxiis. Gray, 344, 349, 403 (PL 

 xcix.). 

 ,, stufchburyi (Sollas), 347. 



Death, processes of, 26. 

 I )endroq)ongia steerei (Scleruihamnus), 337. 

 Dermalia, 43, 48. 

 Dermal membrane, 19, 47. 

 Dermal pores, 47. 

 Development, 26. 

 Diacts, 36. 



Diaretula, 0. Schmidt, 15. 

 Dirfyocaly.r, u. gen., 105, 370. 



,, grwiliif, n. s])., 105, 370 (PL xii.). 



Dictyonalia, 46, 49. 

 Dictyonina, Zittcl, 12,39, 265, 390; bathymelrical 



distribution, 462 ; localities of, 435. 

 Diciyitphyion, 63. 

 Diplacodiwm, O. Schmidt, 15. 

 Dvplohelia profunda, 203. 

 Directalia, 46. 

 Di.sc of ro.settes, 173. 

 Discohexact, 48. 

 Discohexaster, 32, 48. 

 Discodermia, Gray, 346. 

 Doderlein's collection, 2, 427, 451. 

 Duncan, P. M., Aphrocallitfes, 309. 

 Eiierent passages, 20. 

 Ehrenberg, Hyalonema, 182, 184. 

 English Channel, Aphroeallistes, 395. 

 Enoshima, Aplmical/istes, 314; Chonelasma, 326; 

 Eurcte, 294 ; Ilpxadinella, 329 : PeriprageUa, 

 299. 

 Eospongia, 18. 

 Epithelium, 23. 

 Esperiada?, Gray, 184. 

 Etheridge, Capt., Eupledella cucumei; 266. 

 Eudictynm, Marshall, 104, 370. 

 Eiidietyum elegans, Marshall, 103, 104, 370. 

 Eupledella, Owen, 64, 365 (Pis. i.-vi., xiii., xiv.) ; 



bibliography, 53 ; history, 53. 

 Eupledella aspergillum, R. Owen, 67, 64, 67, 366. 

 ,, crassistellata, n. sp., 81, 367 (PL xiii.). 



„ cueumer, Owen, 76, 366. 



,, jovis, Oscar Schmidt, 72, 366 (PL vi.). 



(?) nodosa, n. sp., 82, 367 (PL xiv.). 

 ,, owenii, Herklots and Marshall, 56, 60, 78, 



366 (PL vi.). 

 „ siiberea, Wyv. Thomson, 60, 73, 360 



(Pis. v., vi.). 

 Eupleetellida', 51 ; batliymetrical distribution, 456, 



458 ; geogTaphical, 436. 

 Euplectellinae, 52, 365. 

 Eh ret e (Semper), Carter, 289, 291, 392. 



„ bowerbankii, n. sp., 297, 393 (PL Ixxix.). 



„ eaderi, n. sp., 296, 393 (PL Lxxviii.). 



,, farreopsis, Carter, 275, 290, 295, 392 (PI. 



Ixxix.). 

 ,, marshaUi, n. sp., 297, 393 (I'L bcxix.). 

 „ schmidtii, n. sp., 293, 392 (PL lxxviii.) 

 ., .semper!, n. sp., 292, 392 (PL IxxviL). 



