lon^'; P, is much enlargetl on the outer side of the IHr series, and considerably enlarged on 
the innermost side of the lIHr series; 22 arms 75 mm. lonjr; all of the P^'s are enlarged, more 
so than in the preceding; one with 23 arms 75 mm. long, similar to the first; one with 30 
arms 65 mm. long, also similar to the first. 
Liparometra A. H. Clark. 
A. H. Clark. Proc. Biol. Soc. Washington, vol. 26, 1913, p. 143. 
Key to the Species of the Genus Liparometra. 
a" More than 30 (usually 32 — 36) cirrus segments 
b^ Po and P., half again as long as Pj ; cirri long, rather slender, with prominent 
spines on the outer segments (Moluccas to northern Australia) . ar tint lata 
b- P, and P., twice as longr as P, ; cirri rather short, and stout, the outer 
segments with ver)- slight, or no, spines (sou t her n J a pa n) . . grandis 
a- 25 — 30 cirrus segments (Tonga I sla n d s) rcgalis 
I. Liparometra artiadata (J. Mliller). 
J. MULLER. Abhandl. d. k. preuss. Akad. d. VViss., 1S47 (1849), p. 263 {Covtatida \Alecto\ 
articulata). 
Bell. Report Zool. Coll. H. M. S. "Alert", 1884, p. 160, pi. 12, figs. A, Ka {Antcdon articu- 
lata and Anledon reginae). 
A. H. Cl.\RK. Bull, du Mils, d'hist. nat., Paris, 191 1, N" 4, p. 253 {Dichronietra articulata). 
Die Fauna Sudwest-Australiens, vol. 3, 191 1, Lief. 13, p. 440 {Dichronietra articulata); 
p. 441 [Dichrometra reginae), and p. 443 {Diclirometra articulata and D. reginae). 
The Recent Crinoids of Australia, 191 1, p. 770 [Diclirometra articulata and D. reginae). 
Crinoids of the Indian Ocean, 191 2, p. 150 (Dichrometra reginae) and p. 152 {Dicliro- 
metra articulata). 
Smithsonian Miscellaneous Collections, vol. 61, 1913, N" 15, p. 31. 
Internationale Revue der gesamten Hydrobiologie und Hydrographie, 1915, p. 223 
[Dichrometra articulata). 
Stat. 49a. 8°23'.5S., ii9°4'.6E. 69 Metres. 2 Ex. 
Both of the specimens are much broken. The better may be described as follows: 
The centrodorsal is low hemispherical, 5 mm. in diameter at the base; the small dorsal 
pole is strongly concave, i mm. diameter; the cirrus sockets are arranged in three closely 
crowded irregular rows. 
The cirri are XXVII, 36—39, 30 mm. to 35 mm. long; the longest proximal segments 
are from slightly longer than broad to about one third again as long as broad; prominent, 
though small, dorsal spines are developed from the twelfth-fourteenth (usually fourteenth) seg- 
ment onward. 
The division series are in close lateral contact through rather broad lateral e.xtensions 
which are straight edged and sharply flattened. 
There are 41 arms, all the IIIBr series and one I\'Br series (external) being developed. 
P, is 8 mm. lon^r with 21 segments, resembling P„, but with the outer segments not 
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