126] 
RECORDS OF W.A. MUSEUM. 
The cirri are XIX, 39-50, 35 mm. to 45 mm. (usually about 
40 mm.) in length, long, large and stout, with a pronounced taper 
in the distal half; the first nine or ten segments are half again to 
twice as broad as long (usually nearer the latter) the first segment 
being similar to those succeeding ; the segments following the ninth 
or tenth gradually become shorter, but at the tip of the cirrus 
slowly increase in length again ; the tenth has on the dorsal side 
just within the distal border an inconspicuous slightly elongated 
median tubercle which on the succeeding slowly transforms into a 
narrow and low, though prominent, median carination running the 
entire length of the segment ; on the fifteenth two small tubercles 
appear, one on either side of the median carination just within the 
distal edge of the segment; these increase in size and elongate, 
after two or three segments, becoming prominent low narrow keels 
which resemble the median keel, though they are slightly less in 
height and do not extend quite so far toward the proximal border 
of the ossicle; they are not quite parallel to the median keel, but 
converge slightly toward the proximal end of the segments; distally 
all three carinate processes increase in height, especially the 
median, and a tubercle, which may be more or less elongate, 
usually appears just outside of the distal end of each of the lateral 
keels ; on account of the terminal taper of the cirri the opposing 
spine and terminal claw are rudimentary. 
The radials are short in the median line, but extend upward in 
the angles of the calyx in the form of broad processes with parallel 
or slightly converging sides which entirely and widely separate the 
bases of the IBr.i ; these processes are sharply truncated distally, 
and are not expanded or spatulate. 
The division series and arms extend outward almost hori- 
zontally from the calyx, as in Neometra sibogae. 
The IBr.i ; are short, oblong, four or five times as broad as 
long ; the ventrolateral edge is produced into a thin border which, 
viewed dorsally, is seen to run from the distal edge of the 
interradial process of the radials to the distal lateral angles of the 
IBr.i where it disappears from dorsal view, being continued along 
the ventral side of the axillary and of the division series forming a 
deep trough in which the “ soft parts ” lie. The IBr.2 (axillanes) 
are broadly pentagonal, nearly twice as broad as long ; the lateral 
