279 
VOL. XXXIV. 
PROCEEDINGS OF THE NATIONAL MUSEUM. 
folgen sich die Pinnule regelmissig abwechselnd, und je ein Syzygium zwischen 
3-5 Gliedern. Die Glieder der Arme sind fast doppelt so lang als hoch und 
keilen sich namentlich in der Mitte stark an den Seiten aus. 
Die zwei ersten Pinnulie sind klein, die dritte und vierte die lingsten, dann 
folgen kiirzere, die allmiihlich gegen das Ende der Arme zu linger und zugleich 
diinner werden, wiihrend die ersten mit ziemlich breiter Basis entspringen. 
Linge der Arme 80 min., der Ranken 9 min., der Jiingsten Pinnula S mm. 
Durchmesser des Rankenknopfes 2 min. 
Die Schiebe fehlt leider an dem einzigen Exemplar. Die Pinnulz sind hell - 
und dunkel gelbbraun: gesprenkelt; der Rticken der Arme ist durch zwei ge- 
schliingelte Linie bezeichnet. 
It was at once evident that my specimen, though differing in de- 
tails, resembled 2’. indivisus, also that. Bell’s . granulatus resembled 
both. It was also clear that the relation between these three and the 
other “ Hudiocrinus”” species was very remote. The differences may 
be summed up as follows: 
granula- 
Eudiocrinus indivisus, B. | Hudiocrinus atlanticus, BH. japonicus, 
tus, H., new species. £L. varians, EB. semperi, BE. tuberculatus. 
Radial facets low, the muscular | Radial facets high, the muscular 
fossxe very narrow and crescentic. | fosse very large. z 
Centro-dorsal flat, with marginal | Centro-dorsal hemispherical, nearly 
cirrus sockets. | covered with cirrus sockets. 
Cirrus joints shorter proximally Cirrus joints subequal, smooth; elon- 
than distally, expanding and slightly 
overlapping distally, very slightly flat- 
tened. 
A stout opposing spine present. 
Terminal claw stout, and strongly 
curved. 
First two joints beyond the radials 
united by Syzygy. 
The third joint beyond the radial 
never bears a pinnule. 
Arm joints strongly overlapping. 
Disk small, not extending up on the 
arms. 
Lower pinnules with 
joints, and very stout. 
Color variegated. 
rather short 
gate, approximately oblong in lateral 
view, and flattened. 
No opposing spine. 
Terminal claw slender and nearly 
straight, at least proximally. . 
First two joints beyond the radials 
never united by syzygy. 
The third joint beyond the radial 
| nay bear a pinnule. 
Arm joints smooth. 
Disk very large, extending far up 
on the arms. 
Lower pinnules slender and _ elon- 
gated with elongated joints distally. 
Color plain grayish. 
In all the characters in the above list, the Hudiocrinus indivisus 
group agrees with the Japanese species of Zygometra, and the sum of 
those characters is found in xo other genus of comatulids. 
We can, 
consequently, find no escape from the conclusion that the two are in 
reality closely related, the only real difference being that the &. 
indivisus group has but five arms and Zygometra ten or more. 
