206 
son, some specimens of Promachocrinus kerguelensis, one spe- 
cimen of Anthometra ÅAdriani (Bell) and some specimens of a 
hitherto sunknown form which proves to be of more than usual 
interest, partly on account of some peculiar anatomical features, 
partly because it is viviparous. I shali give here a preliminary 
description of this remarkable form, naming it 
Notocrinus virilis n. g., n. sp. 
Centro-dorsal rather large, 
conical, ithe cirrus-sockets 
— arranged in ten columns of 
three or four each, sepa- 
rated by a naked space in 
the radii. 
Cirri XXX-— XL, 40-60, 
rather long and stout. The 
joints are of uniform length, 
rounded, the basal ones dis- 
tinctly thicker than the fol- 
lowing; the outer half of 
the cirrus is distinctly ser- 
rate, but the prominences 
of the joints are smooth, 
rounded. (Fig. 2). Terminal 
) claw not very prominent. 
Opposing spine short, nearly 
erect. 
Radials very well devel- 
oped, not at all concealed by the centrodorsal. In the angles be- 
tween the radials the small triangular basals!) are visible. I Br. I 
rounded, not in apposition laterally. 10 arms; brachials rounded, 
perfectly smooth. Oral pinnules short, consisting of 11—12 short 
joints; no terminal comb. The second pinnule slightly longer than 
the first. Outer pinnules somewhat longer, also short-jointed; the 
articulations slightly thickened ; the distal joints carry spines on their 
dorsal side. Sacculi few and irregularly placed. 
Fig. 2. Distal end of pinnule. 1/. 
") It is doubtless true basals, not basal rays. The reasons for this will be 
given in the final description. 
