OPHIUROIDEA, CRINOIDEA. (XV, E, F.) EchlU. 95 
Norman (239) p. 407 : variations in colour, measurements, &c. ; 
Michailovskij (223) ]pp. 492, 531. 
Ophioglypha albida ; Petersen (259). 0. convexa ; Richard (271) p. 67. 
0. lacertosa ; Lo Bianco (191) p. 268 : regeneration ; Zeleny (334). 
0. robusta ; Nobili (237) : distinct from 0. maculata ; Mortensen 
( 227) p. 83. 0. sarsii ; Petersen (259) : tentacle-scales ; Mortensen 
(227) p. 82. (Vide etiam sub Ophiura.) 
Ophiomusium lymani ; Nichols (236) p. 254 : Richard (271) pp. 68, 69. 
Ophiomyxa australis ? ; Bell (11) p. 246. 
Ophiopkolis aciileata ; Howe (150) : Lonnberg (197) p. 28 : Maren- 
zeller (214) p. 564 : Mortensen (227) p. 85 : Nichols (236) p. 257 : 
Norman (239) p. 407 : Simpson (294) p. 41 : variations in colour and 
measurements ; Michailovskij (223) pp. 494, 532. 
Ophiopleura borealis ; Michailovskij (223) p. 530 : disc epidermis not 
thick as supposed by Danielssen and Koren ; Mortensen (227) 
p. 84. 
Ophioplocus imbricatus ; Bell (11) p. 246. 
Ophiopsila annulosa ; Nichols (236) p. 257. 
Ophiopus arcticus ; Michailovskij (223) p. 532 : Mortensen (227) 
p. 85. 
Ophioscolex glacialis ; Howe (150) : Norman (239) p. 407 : Petersen 
( 259) : notes ; Michailovskij (223) pp. 496, 533 : “ glas-plattchen ” ; 
Mortensen (227) p. 86, pi. ii. 0. purpureus ; Norman (239) p. 407 : 
or W. quadrispinus \ Mortensen (227) p. 87. 
Ophioteresis elegans ; Bell (11) p. 246. 
Ophiothrix fragilis ; Lonnberg (197) p. 29 : Nichols (236) p. 257 : 
Petersen (259) : Simpson (294) p. 41. 0. lutkeni , includ. 0. penta- 
phyllum Bell, 1890 ; Nichols (236) p. 258. 
Ophiura affirms ; Lonnberg (197) p. 28 : Nichols (236) p. 254 : Norman 
( 239) p. 407. 0. albida ; Lonnberg (197) p. 28 : Nichols (236) 
p. 254 : Norman (239) p. 407 : Simpson (294) p. 41. 0. brevispina , 
larva with transverse ciliated bands ; Grave (111) p. 173, figg. 5, 6. 
0. carnea ; Norman (239) p. 407. 0. ciliaris ; Nichols (236jp. 253: 
Simpson (294) p. 41. 0. ciliata(=0. texturata) ; Lonnberg (197) 
p. 27. fO. egertoni ; Sollas (296). fO. ludeni ; Langenhan (180) 
p. 10, pi. vi. 0. ( = Ophioglypha) nodosa ; Michailovskij (223) 
pp. 491, 531. 0. robusta ; Lonnberg (197) p. 28 : Norman (239) 
p. 407: (= Oplvioglypha\ minor variations; Michailovskij (223) 
pp. 490, 531. 0. sarsi ; Nichols (236) p. 254 : Norman (239) p. 407: 
( = Ophioglypha) incl. 0. coriacea ; Michailovskij (223) pp. 489, 530. 
0. signata ; Nichols (236) p. 254. (Vide etiam sub Ophioglypha.) 
\Palaeura n. g. caelebs, no diagnosis, but a diagram, Lower Ordovician 
D 1 y, Bohemia ; Jaekel (154) p. 110, fig. 5. 
F. CRINOIDEA * 
Crinoidea classified in Orders 1. Larviforma , 2. Costata , 3. Fistulata , 
4. Camerata , 5. Flexibilia, 6. Articulata ; for further divisions see 
these names in Index ; Zittel (339) pp. 124-161. Crin. classified as 
1 . Monocyclica, Hyo -, Platy -, Actino-crinacea , II. Dicyclica , groups 
Rhodo-, Ichthyo -, Cyatho-crinacea , ill. Cryptocyclica , groups Penta -, 
Apio-, Holopo-crinacea, Antedonacea, see further in Index ; Steinmann 
(299) pp. 172-186. 
t Acrockordocrinus, v. sub Bourgueticr. et Mespilocr. 
\ Acrocrinus amphora , arms ; Grabau (109) p. 298. 
* Names that are sometimes given the termination -ites (e.g. Pentacrinites) are 
here treated as always ending in -us. 
