59 
Stat. 294: Three small specimens, one with 12, two with 11 arms. 
Stat. 310: Small, with 13 arms, undergoing adolescent autotomy; there is a single Illir 
2 series bearing two IIIBr 4 (3 + 4) series. 
Stat. 315: 15 arms 30 mm. long; three of the IIBr series are 2 and two are 4 (3 + 4). 
Banda, reef: small, with i 1 arms. 
Banda, 9 — 36 Metres: (i) 14 arms about 40 mm. long; (2) 12 arms about 40 mm. 
long, undergoing adole.scent autotomy. 
Maumeri: (i) 21 arms 80 mm. long; three of the IIBr series are 2, all the other division 
series being 4 (3 + 4); the single IIIBr series is e.xternally developed; the cirri are XIV, slightly 
larger than usual; (2) smaller, with 20 arms; there are nine IIBr series of which four are 2 
and five are 4 (3 + 4); the single IIIBr series, of 2, is internally developed on a ray with two 
IIBr 2 series. 
Haingsisi : 17 arms 95 mm. long; two of the IIBr series are 2 and five are 4 (3 + 4); 
there are four broken cirri. 
II. Family Zygometrid.\e A. H. Clark. 
Zygometra A. H. Clark. 
Key to the Species of the Genus Zygometra. 
a' More than 40 cirrus segments; more than 35 (usually 40 or morcj arms 
(northern Australiaandthe A ru Islands) 
b' more than 40 arms; most of the IIIBr and following division series 
4 (3 + 4); pro.\imal pinnules very stout and very long, tapering to a 
flagellate tip as in Hiiiicroinctra niagnipimia, cirri ver\- long and stout 
(n o r t h e r n A u s t r a 1 i a a n d t h e A r u I s 1 a n d s) microdiscus ^) 
b" about 40 arms; most of the IIIBr and following division series 2; 
proximal pinnules of moderate length, and not especially stout; cirri not 
especially long nor stout (nor th e r n A ust ral i a) elegatts') 
a" Less than 36 (usually 30 or less) cirrus segments; less than 40 (usually 
20 — 30) arms 
b' more than 25 (usually about 30) cirrus segments 
c' border of the ossicles of the division series and of the first two 
brachials smooth and not produced (Mergui Archipelago to 
Singapore and the Malay Archipelago, northward to 
t h e P h i 1 i p p i n c s a n d H o n g K o n g) comaia 
c" borders of the ossicles of the division series and of the first two 
brachials thickened and everted, finely scalloped or tuberculated 
(India) andromcda 
1) Synonyms (?) Hyponome sarsii LovSn; Aniedon multiradiala P. H. Cirpentcr; Zygoniflia mertoni Reichenspergcr. 
2) Synonym Antedon fluctuant P. H. Carpenter. 
