173 
Antedon okelli 1904. Chadwiek, Rep. Ceylon Pearl Oyster Fisheries, 
Suppl. Rep. XI, p. 155, pl., a, BÆ5 
Dichrometra protectus 1909, A. H. Clark, Proc. Biol. Soc. Washington, 
N' 13 
Fiji. Two rather small specimens; the difference between 
the pinnules on the outer and inner arms of each II Br series is 
not so great as usual, possibly on account of immaturity. It may 
be that this character, not found in the majority of the species of 
this genus, is not assumed until a comparatively late stage in the 
development of the individual. 
Johore Strait, Pulau Ubin. Marius Jensen, Sep- 
tember, 1901. Three specimens; one has forty-one arms 100 mm. 
long, and cirri XXVI, 15 mm.—20 mm. long, P, 10 mm. long, with 
twenty-nine joints, P, 17 mm. long with twenty-seven joints, P, 
5,5 mm. long, and P, 4 mm. long; the colour is very deep, nearly 
black; the other two are similar, one having forty, the other twenty- 
seven arms. 
Singapore. April 20, 1906. Two specimens; one with 
forty arms 55 mm. long, and cirri XXVI, 12 mm.—15 mm. long; 
the other larger, resembling the succeeding. 
November 27, 1907. Two specimens; one has forty arms 
65 mm. long, cirri XXVI, 25, 20 mm. long, the distal joints rather 
sharply carinate; P, 7 mm. long with twenty joints, P, 13 mm. long 
with twenty-four joints, P, 5 mm. long, P, the smallest, 4 mm. long; 
the difference between the pinnules on the outermost side of each 
distichium and the inner pinnules is exceptionally well marked. The 
other is similar. The colour of both, and the two preceding, is dull 
Jellowish white, mottled and spotted with yellow-brown. 
Dichrometra tenera (Hartlaub). 
Antedon tener 1877. Litken, Mus. Godeffr. Cat., Vol. 5, p. 100 
som tenera 1890. Hartlaub, Nachr. Ges. Gåttingen, Mai, 1890, 
180, 
Vol. 22 
Bowen, Queensland. Two typical specimens. 
FOO RGBSAEE tenera 1909. A. H. Clark, Proe. Biol. Soc. Washington, 
p. 13, 
