20I 
When viewed at rij^ht angles to the plane of their dorsal surface the IBr, appear 
oblony, about four times as broad as long; when viewed at right angles to the dorsoventral 
axis of the animal the median length appears to be about one third less than the lateral. 
The IBr. (axillaries) are rhombic, half again as broad as long, the anterior angle sharp, 
the posterior process very broad and obtuse; the anterior borders are moderately concave; 
the proximal are straight except just Ijefore they reach the lateral border where they turn to 
a horizontal direction and then curve slighdy dornward, fitting snugly around the rounded 
distal angles of the IBr,. 
The elements of the IBr series and the first two brachials are in very close lateral 
apposition and are more or less sharply flattened against their neighbors. 
The arms are loo mm. long. The first brachials are wedge-shaped, three times as long 
exteriorly as interiorly, the inner borders in close contact. The .second brachials are of nearly 
the same size and shape, slightly larger and more irregular. The first syzygial pair (composed 
of the third and fourth brachials) is slightly longer interiorly than exteriorly, twice as broad 
as long. The following brachials as far as the second syzygy are irregularly wedge-shaped, 
about three times as broad as long, those beyond the second syzygy triangular, somewhat 
broader than long, soon becoming wedge-shaped, .slightly broader than long, and distally 
wedge-shaped, about as long as broad, and terminally longer than broad. 
Syzygies occur between the third and fourth, ninth and tenth and fourteenth and fifteenth 
brachials, and distally at intervals of three oblique muscular articulations. 
Pj 7.5 mm. long, composed of 10 -f segments of which the first is twice as broad as 
long, the second is slightly longer than broad, the third is half again as long as broad, and 
the following are twice as long as broad, becoming three times as long as broad distally ; the 
third and following have rather prominent distal eads which are armed with fine spines, at 
first only on the distal border (away from the ventral surface], later all around. The pinnule 
is markedly stouter than those succeeding, and somewhat stiftened. 
Pj is 6 mm. long with lo segments, resembling Pj but more slender with proportionately 
longer segments distally. 
P.. is 4.5 mm. long with i i segments, smaller, more delicate, and less stiffened than P^. 
The distal pinnules are from 8 mm. to 9 mm. long, very delicate, composed of 20 — 21 
segments. 
This species is described from two specimens from Tahiti, Society Islands, in the 
Zoological Museum (Staatssammlung) at Munich. 
2. Euantedon viohiccana (A. H. Clark). 
A. n. Cl.\KK. Notes from the Leyden Museum, vol. 34, 191 2, p. 129 {Antedon moluccana). 
Stat. 139. o°ii'S., i27°25'E. Molucca Passage. 397 Metres, i Kx. 
The centrodor.sal is low hemispherical, the bare dorsal pole 1.5 mm. in diameter, very 
slightly convex, with an obscure broad median tubercle surrounded by obsolete cirrus sockets. 
The cirri are about XXX, 15—17 (usually 17), slender and delicate, the longe.st about 
SlROGA-EXrEDITIF. Xl.lli'. '^^ 
