186 THE RECENT CRINOIDS 
the dorsal pole concave; the cirrus-sockets are arranged 
in three irregular and crowded rows. There are forty arms, 
all of the IIBr and IIIBr series being developed; the di- 
vision series are laterally flattened. There are faint tuber- 
cles on the last ten or twelve cirrus-segments; none of 
the cirri remain in situ. 
Dichrometra protectus (Lütken). 
Antedon protectus 1874. Lirxen, Mus. Godeffr. Cat., vol. 5, 
p. 190 (nomen nudum). — 1879. P. H. CARPENTER, 
Trans. Linn. Soc. (Zool.), (2), vol. 2, p. 19. 
Antedon brevicuneata 1881. P. H. Carpenter, Notes from 
the Leyden Museum, vol. 3, p. 187. — 1891. HARTLAUB, 
Nova Acta Acad. German., vol. 58, N°. 1, p. 68, 
pl... 3; fig. Sky pl. 4,-fig. 89; 
Antedon imparipinna 1882. P. H. Carpenter, Journ. Linn. 
Soc. (Zool.), vol. 16, p. 505. — 1891. HARTLAUB, 
Nova Acta Acad. German., vol. 58, N° 1, p. 63, pl. 
4, figs. 40, 41, 43. 
Dichrometra protectus 1909. A. H. Crark, Proc. Biol. Soc. 
Washington, vol. 22, p. 18. — Vidensk. Medd. fra 
den naturhist. Forening i Kjobenhavn, 1909, p. 172. 
Amboina (coll. Ludeking). — The cirri are XXVIII, 
20—23; the division series are not quite in lateral contact. 
There are thirty-nine arms; the division series resemble 
those of the type of Antedon laevicirra, but are composed 
of slightly shorter segments. P, is large and stout, tapering 
distally to a slender tip. The pinnules on the outer arms 
are considerably larger than those on the inner. 
This specimen may be exactly matched with others from 
the Philippine Islands which I have examined. 
Dichrometra laevicirra (P. H. Carpenter). 
Antedon laevicirra 1881. P. H. Carpunter, Notes from the 
Leyden Museum, vol. 3, p. 189. 
Notes from the Leyden Museum, Vol. XX XIII, 
