83 
d' 28 — 50 (usually about 40) cirrus segments; arms i 15 mm. to 300 mm. 
long; the dorsal spines on the outer cirrus segments appear in lateral 
view as broad triangles with the apex produced and subterminal 
instead of small sharp median .spines as in spectabilis and molleri 
(Sunda Islands and Moluccas southward to between 
Fremantle and Geraldton, Western Australia) . jacqninoti 
d" 25 cirrus segments, of which the outer bear long and sharp dorsal 
spines; arms about 60 mm. long; P„ with 12 thick segments, larger 
and much stouter than Pj or P.,, which are subefjual, though the 
latter is stouter basally (Northwestern Australia and \ e w 
Guinea) pinniformis 
c" cirri more slender, tapering more or less distally, the longer proximal 
segments about as long as broad, sometimes slightly longer than broad, 
more rarely slightly broader than long 
d' usually 40 — 50 (32 — 51) cirrus segments which bear small dorsal 
spines from about the iS'** onward; arms u-sually about 130 mm. long; 
synarthrial tubercles usually promjnent, though not excessively deve- 
loped, and pointed (northern and eastern Australia to 
Singapore, Formosa, and the Philippine Islands) . . discoidea 
d- not over 35 cirrus .segments; arms not over 120 mm., usually not 
over 100 mm., in length 
e' synarthrial tubercles very high, extravagantly developed; 30 cirrus 
segments; arms 80 mm. long (Singapore) ctisifcr 
e" synarthrial tubercles slightly, or not at all developed 
f^ dorsal spines on the outer cirrus segments small or medium in 
length (Canton, Chin a, to southern Japan) . laevipinna 
{- dorsal spines on the outer cirrus segments long and conspicuous 
(N e w G u i n e a t o T o n g a a n d F i j i) papuensis 
I. Amphimetra spectabilis A. H. Clark. 
A. H. Clark. Smithsonian Miscellaneous Collections (Quarterly Issue), vol. 52, 190S, part 2, 
p. 215 [Himerometra milberti). 
Proc. Biol. Soc. Washington, vol. 22, 1909, p. 7 [Amphimetra milberti, part). 
Vidensk. Medd. fra den naturhist. Forening i Kobenhavn, 1909, p. [56 (the species 
referred to under the name of Amphimetra milberti in the discussion of A. molleri). 
Proc. U. S. National Museum, vol. 39, 191 1, p. 540 [Amphimetra milberti). 
Crinoids of the Indian Ocean, 191 2, p. iii [Amphimetra milberti, part). 
Localities. — Only known from the Philippine Islands; "Albatross" Stat. 5100, South 
Channel, Manila Bay, 35 fathoms (Cat. N" 35245, U. S. National Museum): and Limbones 
Cove ("Albatross" Coll.; Cat. N" 35196 L'. S. National Museum). 
