120 OPHIUROIDEA. 
no. 1, p. 17 [phosphorescence]; Leslke §& Herdman, Proc. R. 
Phys. Soc. Ed. vi. (1881) p. 88; Lyman, Chall. Rep. Oph. (1882) 
p- 136; Barrois, Rev. Biol. i. (1889) p. 73; Fjelstrup, Zool. Dan. 
Pigh. (1890) p. 26, pl. 11. fig. 6. 
Amphiura elegans, Norm. Ann. § Mag. xv. (1865) p. 109; Hoyle, 
Proc. R. Phys. Soc. Ed. viii. (1885) p. 141. 
Amphiura tenera, Liitk. Dansk. Vid. Selsk. Skrift. v. (1859) p. 226; 
Lyman, Ill. Cat. M. C. Z. i. (1865) p. 128. 
Amphipolis squamata, Zjungman, Gifv. Vet.--Ak. Fork. 1871 (1872), 
. 645. 
Neighinalis tenera, zd. tid. 
Amphipolis tenuis, zd. ¢. e. p. 646. 
Amphipolis lineata, zd. ¢. ¢. p. 634. 
Amphipolis kinbergi, zd. ¢. ec. p. 646. 
Amphipolis elegans, td. tid. 
Amphipolis appressa, zd. ¢. c. p. 647. 
Ophiura moniliformis, Grube, Actin. §c. Meer. (1840) p. 18. 
Asterias noctiluca (?), Vivant, Phosph. Mar. (1805) p. 5. 
A small species, not more than an inch or an inch and a half in 
spread. Arms five to nine times the radius of the disk. Disk 
rounded; covering-scales small and imbricating; radial shields in 
contact along the whole of their inner edge. The delicate flattened 
arms have three or four fine spines; two tentacle-scales ; ventral 
shields irregularly pentagonal. Three mouth-papille on either side, 
and often the outermost the largest. 
Colour, when dried, light or darker yellow. In life greyish. 
R. r. 
18. 
16 23. 
HG ee 
Distribution. North Atlantic, Arctic Ocean, West Indies, Cape, 
S.E. of Australia. To 120 fms. 
a-c. Coast of Down. Belfast Nat. Hist. Soe. 
d, e. 50° 24’ 45” N., 10° 07' 30” W., 70 fms. G. C. Bourne, Esq. 
F-h. Liverpool. 
7,7. Aberdeen. G. Sim, Esq. 
4. Amphiura securigera. 
Ophiopeltis securigera, Dib. § Kor. Vet. Akad. Handlg. 1844 
(1846), p. 236, pl. vi. figs. 3-6; Sars, Norg. Ech. (1861) p. 14; 
Norman, Ann. § Mag. N. H. xy. (1865) p. 111; Wyv. Thomson, 
Depths of the Sea, (1873) p. 124. 
Amphiura securigera, Lyman, Chall. Rep. Oph. (1882) p. 148; 
Hoyle, Proc. Roy. Phys. Soc. Ed. viii. (1885) p. 141. 
Mr. Norman writes of this species, which I have never seen :-— 
“ Disk haying the radiating scales long, narrow, and parallel. 
Arms extremely long and very slender; upper scales triangular, 
lower cordate; lateral scales bearing three spines, of which the 
upper and lower are simple, but the middle is much swollen in the 
centre, and apically produced into an anchor- or, rather, axe-formed 
semicircular head, having a jagged edge. 
