cirri XXX, 17 — ly, 25 mm. to 30 mm. long, the distal segments 
broader than long (P h i li p p i n e I s hin d s ; ? depth) sclcnc 
d- brachials with prominently swollen and produced distal borders and 
sunken dorsal surface ; profile of the division .series and arm ba.ses 
diverging at an angle of more than yo'; arms about 170 mm. long; 
cirri XX1\', ly — 24 (usually 21), 25 mm. to 40 mm. (usually 
30 mm. to 35 mm.) long, the distal segments slightly longer than 
broad (Kei Islands and J'imor; 73^310 Metres) .... qorgonia 
b' not more than 1 3 arms 
c' all of the cirrus segments much broader than long, tho.se in the distal 
half of the cirri twice as broad as long; ossicles of the division series 
and fu'st four brachials with the dorsal surface raised into a broad blunt 
keel, highest and most conspicuous on the first maned; brachials in 
the proximal fourth or third of the arm with indications of a broad low 
median tubercle; 10 arms 165 mm. long; cirri XX, 17 — 20, 20 mm. 
to 25 mm. long, very stout (Timor; 520 Metres) timoretisis 
c* several, or most, of the cirrus segments as long as, or longer than, broad 
d' cirri very stout, none of the segments longer than the distal diameter, 
the outer broader than long, each with a prominent blunt carinate 
process; ossicles of the I Br series with a plain and even surface, 
or with a slight indication of a broad rounded median keel ; brachials 
with an unmodified dorsal surface; 10 — 11 stout arms about iSo mm. 
long; IIBr 4 (3 + 4); cirri XXV, 18 — 22 (usually 20), 32 mm. long 
(Kei Islands; 487 Metres) crassa 
d" cirri more slender, most, or all, of the segments slightly longer than 
broad ; ossicles of the division series and first two brachials with the 
median portion elevated into prominent broad keels or prominent, 
more or less irregular, tubercles 
e' less than 20 (usually 15 — 18) cirrus segments; the median portion 
of the ossicles of the IBr series and first two brachials is abruptly 
raised into an irregular rounded tubercle; the remainder of the 
dorsal surface of these ossicles is very uneven, and the proximal 
and distal borders are more or less irregularly crenulate; 10 arms 
115 mm. long; cirri XX, 15 — 20 (usually 15 — 18), 21 mm. long, 
the outer cirrus seoments bear small blunt terminal tubercles 
(southern Japan; 650 Metres) lata 
e' more than 20 (20 — 31) cirrus segments 
f the dorsal surface of the ossicles of the division series and 
first two brachials is rather sharply convex, rising into a broadly 
rounded median ridgje with a more or less distinct median 
tubercle, so that the interradial angles appear sunken in a 
SIBOGA-EXI'KDITIE .XLII b. ^3 
