PALMIPES. 83 
R = 2r (nearly). 
A small species with short wide arms; they and the body pretty 
thick, Ambulacral grooves rather narrow, fringed by a row of 
spines arranged in triplets at the sides of the ossicles. The whole 
of the lower surface is covered with short, sharp, slender spines, 
ordinarily arranged in pairs; at the margin the spines are shorter, 
and they are still shorter on the dorsal surface, over which they are 
scattered with less regularity. The madreporite is rather nearer 
the centre than the margin, is not at all prominent, irregular, often 
triangular in form. ‘T'wo spines are often so arranged in relation to 
one another as to simulate a pedicellaria. 
Colour “ greenish yellow, sometimes tinged with red, and some- 
times brownish;” dark brown to yellowish when dry, or almost 
white, as it is also when in spirit. Four- or six-rayed forms not 
uncommon. 
R. r: Height of disk. 
22°5 12 2 
19 10°5 ii 
16°5 85 f 
10 6 3 
8 4:5 33 
Distribution. Eastern side of tropical and temperate North At- 
lantic, English Channel and Irish Sea; Mediterranean. 0-35 fms. 
a-c. Millport, Cumbrae. D. Robertson, Esq. 
d. Smerwick Harbour. R. Trish Acad. 
e. Lahinch, co. Clare. delfast Nat. Hist. Soc, 
f. Strangford Lough, Sept. 1835. Belfast Nat. Hist. Soe. 
g-j. Lambay Island. Belfast Nat. Hist. Soe. 
k-m. Off Liverpool. 
n—z. Falmouth. W. P. Cocks, Esq. 
a’. Plymouth Sound. Dr. Leach. 
b'-d'. Plymouth. 
e'-q¢’. S. of St. Peter’s Port, Guernsey. Prof. Bell. 
h'. Channel Islands. Dr. Giinther. 
2. PALMIPES 
Anseropoda (vox hybr.), Nardo, Isis, 1854, col. 716. 
Palmipes, 4g. Mém. Soc. Neuchat. 1. (1856) p. 192; Forbes, Mem. 
Wern. Soc. viii. (1839) p. 119; Gray, Ann. § Mag. vi. (1840) 
p. 288; Forbes, Brit. Starf. (1840) p. 116; Gray, Brit. Rad. (1848) 
p- 21; Norm. Ann. § Mag. xvi. (1865) p. 120; Viguier, Arch. Zool. 
vii. (1878) p. 212; Sladen, Chall. Rep, Ast. p. 376; Bell, Ann. § 
Mag. vii. (1891) pp. 254 & 465; Norman, op. cit. p. 584. 
Asteriscus (pars), MZ. Tr. Syst. Ast. (1842) p. 39. 
An Asterinid in which the marginal plates are not larger than 
the others; the papule are confined to the radial portions of the 
upper surface, the skeletal plates of which are thin, seale-like, and 
provided with tufts of spinclets; the papule are in a single row 
G2 
