6o 
b" less than 25 (18 — 21) cirrus segments 
c* more than 10 arms; cirri rather stout, most of the cirrus segments 
being about twice as broad as long (northern Australia and 
the A ru Islands) punctata^) 
c- 10 arms; cirri slender, the longer proximal segments about one 
third longer than broad (Philippine Islands) pristina 
I. Zygometra microdisnts (Bell). 
? LOVEN. Forhandl. Skand. Naturf. Christiania, vol. 10, 1868, p. liv. {Hyponovie sarsii). 
Bell. "Alert" Report, 1884, p. 163, pi. 15 [Antedon microdiscns). 
P. H. Carpenter. "Challenger" Reports. The Comatulae, 1888, pp. 96, 97; pi. 9; pi. 37, 
fig.s. 4 — 6 [Antedon microdiscns and A. niiiliiradiatd). 
A. H. Clark. Zool. Anzeiger, vol. 34, 1909, N° 11 '12, p. 367 [Zygometra microdiscus). 
The Recent Crinoids of Australia, 1911, pp. 760, 761 [Zygometra microdiscus and 
Z. midtiradiata). 
The Crinoids of the Indian Ocean, 19 12, pp. 103, 104 [Zygometra microdiscus and 
Z. midtiradiata). 
Reichexsperger. Abhandl. der Senck. naturforsch. Ges., vol. 35, 1913, Heft i, p. go [Zygometra 
microdiscns); p. 90, fig. 6, p. 91 {Zygometra. mertoni [= young specimens]). 
A. H. Clark. Smithsonian Miscellaneous Collections, vol. 61, 191 3, N* 15, p. 20 [Zygometra 
microdiscus). 
Stat. 273. Anchorage off Pulu Jedan, east coast of the Aru Islands (Pearl Banks); 13 Metres. 14 Ex. 
This is by far the finest series of this handsome species that has ever been assembled 
from any one locality. The details of the specimens are as follows: 
(i) 65 arms; colour yellow with small circular spots of red brown on the division series 
and arm bases; cirri yellow in the proximal half, each segment with a narrow dorsal purple 
saddle, in the distal half light purple. 
(2) 60 arms, similar to the preceding; all the division series are 4 (3 + 4); cirri 40 mm. 
long, composed of 51 — 52 segments; the transition segment is about the twentieth; colour 
purple, darkest on the cirri, with a broad mediodorsal line of yellow on each arm. 
(3) about 80 arms; one division .series is 6 (3 + 4); yellow brown. 
(4) about 75 arms about i 10 mm. long; cirri 37 mm. long; yellow brown. 
(5) 85 arms; yellow brown. 
(6) about 100 arms; yellow brown. 
(7) about 80 arms; yellow brown. 
(8) about 65 arms about 85 mm. long; cirri 35 mm. long, composed of 49 segments; 
colour light yellow, concentrically banded with narrow bands of purple; cirri deep purple with 
occasional large yellow blotches. 
(9) similar to the preceding. 
(to) 85 arms 145 mm. long; cirri 40 mm. long, composed of 52 — 55 segments; colour 
vellow brown. 
l) Synonym Heteromctia delicata H. L. Claik. 
