3 
b* the first pinnule of the free arms is on the second brachial ; there 
is, at least on the outer arms, a pseudosyzygy between the first 
two brachials, and on all the arms there is a syzygy between the 
third and fourth; all the division series 2. 
c' brachials beyontl the basal wedge-shaped, broader than long 
(southeastern Africa to the Malay Archipelago, 
northern Australia, the P h i 1 i [j p i n e s, the Caroline 
I s 1 a n d s a n d s o u t h e r n J a p a nj Comatella 
c- brachials beyond the basal trianorular, about as lont: as broad 
d^ cirri arranged in 25 closely crowded columns, usually of 
two each (K e i a n d P h i 1 i p p i n e 1 s 1 a n d s) . . Palaeocomatella 
d- cirri arranged in irregular rows (n o rt h w es ter n A fr ica 
and southwestern Hurope, and the Caribbean 
Sea) Neocomatella 
10 arms 
b^ all the pinnules present 
c^ cirri moderate or slender, but never excessively so ; at least 
the last two segments no longer than broad 
d' first and second segments of the proximal pinnules with 
a very high and prominent carinate process of which the 
outer edge, at least on the second segment, is parallel 
with the longitudinal axis of the pinnule (Caribbean 
Sea a nd Gu If of M exico) Leptonemaster 
d- no carinate process on the basal segments of the proxi- 
mal pinnules 
e^ the pinnules of the first two to four pairs bear ter- 
minal combs ; the combs are confined lo the distal 
half of the pinnules and are composed of triangular 
teeth which are not higher than the lateral diameter 
of the segments which bear them ; none of the sesr- 
ments of the proximal pinnules are more than very 
slightly longer than broad ; there is no modification 
of the dorsal surface of the earlier brachials ; all of 
the brachials, and the pinnulars, have very spinous 
distal borders (eastern coast of Africa to the 
Malay A r c h i j) e 1 a g o and the Philippine 
Islands) Comissia 
e- terminal comb occurring only on the pinnules of the 
first pair (P, and Pa) from one or both of which it 
is sometimes absent ; the comb usually arises about, 
or within, the proximal third of the pinnule, and 
