OPHIUROIDEA. (IV, E.) 
Echin. 81 
0. vivipara , measurements; Ludwig (157) p. 15 ; post-larval growth- 
stages sought for, but only one found; Ludwig (159) p. 235. 
Ophiomyxidae , redefined; Verrill (244) p. 65. 
Ophionereis annulata, from Panama (p. 162, pi. xiii); 0. nuda , n. sp., 
7° 33' N., 78° 34' W., 85 fms., and 0° 57' S., 89° 38' W., 53 fms. 
“apparently nearly related to Ophioiriton semoni ” (p. 163, pi. xiv): 
Lutken & Mortensen (162). 0. reticulata ; Verrill (244) p. 30: 
habitat, Clark (56) pp. 118, 131. 
Ophiopaepale goesiana, colour; Verrill (244) p. 8. 
(Jphiopelte , subgenus [? n. S-g.] of Amphiura ; Verrill (244) p. 25. 
Ophiopeza custos as in (169) Zool. flee. 1897; Koehler (142) p. 35, pi. iii. 
0. peter si-, Verrill (244) p. 8. 
Ophiopholis aculeata-, Bidenkap (37) p. 100. 
Ophiophthirius actinometrae dorsal plates (p. 218), hooked spines not a 
generic character (p. 216); Ludwig (159). 
Ophioplax ljungrnani ; Verrill (244) p. 31. 
Ophioplocus huttoni , n. sp., among sea-weed at Lyall B., near Wellington, 
N. Z.; Farquhar (84). 0. imbricatus , Zanzibar, measurements; 
Ludwig (158) p. 544. 
Ophioplus, n. g. (p. 70) with genotype Hemieuryale tuberculosa Lym. 
redescr. (p. 71, pi. i); Verrill (244). 
Ophiopristis, n. g., with genotype 0. hirsuta (Lym.) (pp. 39, 40, 44); 0. 
ensifera , n. sp., 110-260 fms. otf Havana (p. 47, pi. iv); 0. hirsuta , 
variations from the type in Havana specimens (p. 49); 0. ( Opliiotreta) 
lineolata , variations from the type and from Lyman’s figures, in 
Havana specimens (p. 51); 0. ( Ophiotreta ) sertata , variations from 
original description (p. 54): Verrill (244). 
Opliiopora , n. g., with genotype 0. bartletti (Lym.); Verrill (244) 
pp. 39, 43. 
Ophiopsila annulosa , breeding period, phosphorescent; 0. aranea , breed¬ 
ing period, habitat: Lo Bianco (147) p. 472. 0. riisei-, Verrill 
(244) p. 23. 
Ophiopyren bispinosus as in (169) Zool. Rec. 1897; Koehler (142). 
Ophiopyrgus alcocki as in (169) Zool. Rec. 1897; Koehler (142) p. 6, 
pi. i: post-larval growth-stages; Ludwig (159) p. 219. 0. saccharatus, 
dorsal plates; Ludwig (159) p. 218: perhaps intermediate between 
Ophiopyrgus and Ophioglypha ; Koehler (142) p. 8. 0. wyville- 
thomsoni , post-larval growth-stages; Ludwig (159) p. 219. 
Ophioscalus , n. g. [or ? n. S-g. of 0phiaca7itha\ with genotype 0. echinu- 
latus (Lym.); Verrill (244) pp. 39, 42. 
Ophiostigma isacantha-, Clark (56) p. 131. 
Ophiothamnus , diagnosed; Verrill (244) p. 40: “as ill defined as 
Ophiomitra ”; Lutken & Mortensen (162) p. 181. 0. laevis , n. sp., 
0° 16' S., 90° 21' W., 551 fms., “some resemblance to 0. remotus”; 
op. cit. p. 180, pi. xix. 
Ophiotholia supplicans-, Haeckel, p. 115, pi. x. 
Ophiothrichidae diagnosed; Verrill (244) p. 18. 
Ophiothrix alopecurus , breeding period, habitat; Lo Bianco (147) p. 472. 
0. angulata , variations, colour, and brephic examples; Verrill (244) 
p. 18. 0. aristidata , var. investigatoris as in (169) Zool. Rec. 1897 ; 
Koehler (142) p. 67, pi. xi. 0. capillaris ; Haeckel (115) pi. x. 
O. echinata ; Condorelli (61) p. 35: breeding period, habitat, com¬ 
mensal; Lo Bianco (147) p. 472. 0. fragilis ; Condorelli (61) p. 35 : 
distribution, habitat, habits, food; Allen (8) p. 471 : breeding period, 
habitat; Lo Bianco (147) p. 472: breeding period; Aurivillius (21) 
p. 13. 0. galapagensis , n. sp., 0° 57' S., 89° 38' W., 53 fms., 4 speci¬ 
mens, of which one has 6 arms; Lutken & Mortensen (162) p. 181, 
pi. xx. 0. hirsuta ; Ludwig (158) p. 549. 0. oerstedi, colour; Verrill 
