biology, (ir, B, i, f—h; ii, a—cl.) 
Ecliin. 37 
10. Mesodermal tissues, joints:—Muscle system of Cystidea 
(Jkl.) (p. 144), of Thecoidea (= Edrioasteroidea) inferred (p. 24); 
Jaekel (130). 
11. Vacant. 
12. Genital system:—Of Thecoidea (= Edrioasteroidea) inferred 
(p. 25), parietal pore [gonopore] and genital organs of Cystidea 
(Jkl.) (pp. 137-143, 190, 363); Jaekel (130). 
h. BLASTOIDEA . 
1-jf. Vacant. 
5. Skeleton: — ‘ Dactyli ’ ‘ fingers,’ new term for brachiola; 
Jaekel (130) p. 87. 
6-12. Vacant. 
ii. Variation :— 
a. In form :—Vacant. 
b. In form and surface characters :—Local races of Asterias 
forbesi and A. vulgaris ; Mead (174) pp. 39, 42.—In proportions, 
marginals, and spines of Goniaster americanus ; Verrill (243) 
p. 153.—In arm-length of Ctenodiscus corniculatus, Solaster encleca, 
Cribrella oculata , Asterina linchi (p. 339), in dorsal skeleton of 
Solaster papposus (p. 338); Doederleix (78).—In spines and radial 
scutes of Ophioglypha lymani , spines of dorsal disc of Ophiactis 
asperula ; Ludwig (157) pp. 5, 6.—In proportions and form of oral 
shields, and number and arrangement of adjacent angular plates, in 
Ophiura pallida (p. 11), in spines of Ophiothrix angulata (p. 19) and 
minor points in various spp., passim; Verrill (244).—Study of 
variations in Scyphocrinus ; Waagen & Jahn (246) pp. 63, 74. 
c. In colour:—In life and alcohol,,.of various Holothurians ; Bedford 
(28).—Spotted and striped Synapta beseli ; Bedford (28) p. 142.— 
Colour of Synapta roseola and S. inhaerens , normal pink of former 
perhaps due to excess of iron, not protective; Clark (57) p. 24, 27, 
coloured pi. x.—Colour of Holothuria surinamensis (p. 122), of Cucu- 
maria punctata (p. 124) and of Bermuda Echinoderms generally 
(pp. 130-134): local variation Echinometra subangidaris N. and S. 
of Bermuda, Mellita sexforis Bermuda and Jamaica, Luidia clathrata 
Bermuda (pp. 117, 118); Clark (56).—Under surface of Hymenaster 
regalis var. agassizi deep pink or rose-colour in alcohol, upper side 
paler pink; Verrill (243) p. 221.—Colour in life of Asterina 
cepheus (p. 541), LincJcia ehrenbsrgii , L. midtiforoj (p. 542), Ophiar- 
thrum elegans (p. 547); Ludwig (158).—Colour of various Ast. and 
Oph. in spirit; Bidenkap (37 and 38).—Local colour varr. of 
Ophiura brevispina (p. 51: colour of Ophiura rubicunda (p. 6), 
O. appressa (p. 7), 0. pallida (p. 7), Ophiopaepale goesiana (p. 8), 
Ophiothrix angulata (p. 19), 0. oerstecli (p. 20), 0. suensoni (p. 21), 
Ophiactis dispar (p. 32), Ophiopristis hirsuta (p. 51), 0. lineolata 
(p. 54), Amphipsila maculata (p. 57), Ophiomyxa Jlaccida (p. 66), 
Ophioplus tuberculosus (p. 72), Astrophyton muricatum (p. 84) and 
Gorgonocephalus mucronatus (p. 85); Verrill (244).—Colour in 
life of Ophiactis aspenda (p. 7), Amphiura chilensis (p. 12), in spirit 
of Ophiocten arnitinum (p. 5) ; Ludwig (157).—Colour of spp. of 
Antedon and Actinometra ; Doederlein (77).— Pentacr. uyville- 
thomsoni , bluish-green in life; Albert, Prince de Monaco (5) 
p. 313. 
d. Meristic variation :— 
1. Variation from pentamerous symmetry:—Loss of anterior 
ambulacrum, and diminution of the two anterior interambu¬ 
lacra, combined with normal peristome, in Scutella faujasi ; 
Iverforxe (134).—In Ast., general account; Hamann (118) 
