130 OPHIUROIDEA. 
p-r. Kilkierran Bay, 4-80 fms., 6/7/90. R. Irish Acad. 
s-u. Portaferry and Strangford Lough. Belfast Nat. Hist. & 
Phil. See. 
v-v. Off Liverpool. 
y-d’, Devonshire. 
e’. Falmouth. W. P. Cocks, Esq. 
t':g'. Plymouth Sound. 
h'. ? Plymouth Sound. 
?’-k'. E. coast of Ross-shire. Dr. Sutherland. 
l'-n', Shetland. EK. M. Nelson, Esq. 
o’, p’. Old British Coll. 
2. OPHIOPSILA. 
Ophiopsila, Forbes, Trans. Linn. Soc. xix. (1845) p. 149; Liitken, Danske 
Selsk. Skrift. v. (1859) p. 285; Lyman, Lil. Cat. M. CZ. (1865) 
p- 149; zd. Chall. Rep. ons (1882) p. 159. 
Disk with very minute overlapping scales nearly or altogether 
covering the radial shields. Arm-spines short and flattened, from 
six to twelve. Lowest tentacle-scale elongated, spatula- or dagger- 
shaped; the tentacle-scales le in a longitudinal groove. 
1. Ophiopsila annulosa. 
Ophianoplus annulosus, Sars, Nyt Mag. x. (1859) p. 25, pl. i, figs. 2 
7; Brady § Robertson, Ann. § Mag. ii. (1869) p. 355, pl. xxii. 
figs. 1-6. 
Ophiopsila annulosa, Liitk. Danske Vid. Selsk. Skrift. v. (1859) 
p- 258; Ludw. Mitth. zool. Stat. Neap. i. (1879) p. 551; oe 
Faun, Med. (1884) p. 95; Hoyle, Proc. Rk. Phys. Soc. Ea. viii. 
(1885) p. 152. 
This species, which I have never seen, is defined by 8 Sars thus :-— 
“ Disco supra fusco annulis albis; spinis brachiorum xii.” It has 
been recognized by Dr. Norman among specimens collected on the 
west coast of Ireland, but is otherwise only known from the Medi- 
terranean; 40-50 fms. 
OPHIOTHRICID& (see p. 26). 
OPHIOTHRIX. 
Se M. Tr. Arch. f. Nat. vi. (1840) p. 328; wd. Syst. Ast. 
(1842) p. 109; Lyman, Ill. Cat. M. C. Z, (1865) p. 155; Norman, 
Ann. § Mag. xy. (1865) p. 107; Lyman, Chall. Rep. Oph. (1882) 
p. 213. 
Tooth-papille numerous ; teeth ; no mouth-papille ; the mouth- 
frames united in their proximal half only so that there is a pore in 
the hinder part. Radial shields long. Disk spiny or granulated or 
both. Arm-spines rather long and numerous, notched at their 
sides, generally glassy. 
