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in length, the terminal nine or ten, which are somewhat compressed, 
being twice as broad as long, and even broader distally; the transi- 
tion and following joints have a slight dorsal tubercle, at first 
distal in position, but gradually moving anteriorly, being mediån 
after seven or eight joints; the opposing spine is represented by a 
slight median tubercle; the terminal claw is longer than the penul- 
timate joint, stout, and strongly curved. 
In 1889 Carpenter described a new species of "Actinometra”, 
Å. notata, from the Mergui Archipelago, assigning it to a position 
in the "Paucicirra group” near A. paucicirra itself. The figures 
he gives, however, show that Actinometra notata is in reality iden- 
tical with the previously described A. stelligera, and does not belong 
to the ""Paucicirra group” at all. This error does not seem to 
have been detected; Kæhler recorded from Amboina a specimen of 
stelligera which appears to have all of the characters of notata, and 
more recently Chadwick has reported a twenty-armed specimen of 
notata from Ceylon, which must resemble pretty closely typical 
stelligera. 
In 1894 Professor Bell described a remarkable new species 
of "Antedon”, A. bassett-smithi, from the Macclesfield Bank, west 
of Luzon, Philippine Islands, remarking upon the extraordinary 
irregularity of its syzygies and suggesting that the discovery of the 
specimen might shake our faith in the systematic importance of 
the position of the syzygy.  Antedon bassett-smithi was said to 
belong to Dr. P. H. Carpenter's ”"Spinifera group”; a glance at 
the figure which, fortunately, accompanies the description, shows that 
it has nothing whatever to do with any of the various groups of 
€ Antedon”, but is an '"Actinometra”, å synonym of Comatella stelligera. 
The detection of syzygies in the division series is exceedingly 
difficult, unless recourse is had to actual dismemberment, and it is 
much better, in identifying the species of Comasteridæ in which 
the division series have two joints only to rely on the Characters 
of the cirri, brachials, and proximal pinnules rather than on the 
Character of the union between closely united joints. 
