P0LYCH2ETA—BENHAM. 
43 
being separated from one another by about the diameter of an eye. They are large, 
and herein there seems to be a difference from the type, of which McIntosh says that 
it “ appears devoid of eyes.” 
The median tentacle is absent from both specimens. The laterals spring from 
below it (fig. 31), and are directed parallel with it, not divergently as in some species. 
They are tapering without any subterminal swelling ; they bear a few microscopic 
hairs. In length they are short, being not quite twice the length of the prostomium. 
The palps are long, smooth, and of a greyish-brown colour. 
The parapods are bilobed (fig. 32). The notopod has a long acicular process which 
is more slender than that of the neuropod. The anterior feet are longer than the posterior. 
The chsetse are pale yellow or, as McIntosh terms them, “ straw-coloured.” The dorsal 
chsetse are more numerous than the ventral, being 15-20 in number. They form an 
upwardly directed tuft of shorter, stout and straight bristles, and a few in the lower part 
of the bundle are longer and directed outwards. The pectinated frills (fig. 34) nearly 
surround the axis. At any rate, they extend across it over the greater part of this 
region ; the distal portion of the bristle is smooth and rather sharply pointed. 
The ventral chsetse are few in number, from 5-8, usually 6. They appear to be 
in a single vertical series, decreasing in length from above downwards. They are rather 
stouter than the largest of lower ones in the notopod, but they are a good deal longer. 
The frilled region (fig. 35) is rather short, and is somewhat enlarged. The frills 
are few, some 12-14, and delicate; the distal frills are not continuous, but each is 
represented by two or three isolated groups of pectinations, and lower down these extend 
till they meet and form a continuous frill of fine short, hair-like processes, which takes 
an irregular course across the bristle and reaches the convex border or “back.” The 
smooth apex is curved, and there is no sign of a sub-apical tooth. 
The form of the chsetse agrees with the figures given by McIntosh, though I have 
added some little details. 
Localit ies .—- 
Station 10, 325 fathoms (two). 
Station 11, 358 fathoms (one). 
Distribution .—South of Australia, Lat. 42° 43' South, Long. 134° 10' East, 1,600 
fathoms. 
Genus Eulagisca McIntosh. 
Eulagisca corrientis McIntosh. 
McIntosh (1885), p. 91, pi. XIII, fig. 4 ; pi. VII a, figs. 3, 4. 
(Plates 6 and 7, figs. 36-42.) 
The larger of the two specimens of this rare worm is 83 mm. in length, with a 
diameter of 11 mm. over the body, and 23 mm. over the parapods. It contains 37 
segments. The smaller consists of 33 segments, is only 20 mm. by 3 mm. over the body 
and 8 mm. including the parapods, which are relatively long. 
