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distinctly curved. Hairs on outer surface long, and distributed over a large portion, situated at 
some distance from one another, and consequently not very numerous. The tuft formed at 
the distal and upper angle not very dense. Numerous hairs are disposed along upper margin 
at small distances from one another, short curved ones are scattered near upper margin over 
the inner surface. 
Mandible (Pl. XVII, fig. 17) has the third tooth stronger than the first and second. 
Distance between extremities of first and second teeth greater than that between extremities 
of 2™4 and 3"4 teeth. Fourth tooth small, fifth confluent with inferior angle, or, though small, 
separated from it. 
Maxilla (Pl. XVII, fig. 18 and 18*) with the two inferior spines not on a step-like 
projection; notch behind upper spines very small and a spine-like hair inserted at its bottom. 
Between the two pairs 6 to 7 spines are disposed in a single row along the nearly straight edge. 
Outer maxillae (Pl. XVIII, fig. 1) have the outer lobe broad, short, with the 
interior margin straight, exterior margin arched, the two meeting in an obtuse angle, which makes 
it look somewhat pointed at the extremity. The inner lobe is short and not distinctly separated 
from the outer lobe. Hairs are disposed on distal part of surface and along inner margin only 
of outer lobe, with a longitudinal series extending from the outer to the inner lobe. Hairs on 
inner lobe not very numerous, most of them directed inwards and downwards, and more distinctly 
feathered than the other hairs of this maxilla. 
Cirri. First pair has unequal branches of 6(7) and 12 segments respectively. The 
segments of the shorter ramus are only slightly protuberant, the last one bears a- few spines 
which are stronger than those of the other segments. The last segment cf the longer ramus 
has a few (3 to 4) very long hairs, which look somewhat like spines, disposed on its extremity. 
Second pair has 9 (10) segments in each ramus; the somewhat shorter ramus has 
the outer segments protuberant and that part of the ramus recurved in a curious way. 
Third pair has nearly equal rami of 10 to 11 segments; a few very strong and long 
spine-like hairs disposed at the extremity of the terminal segments. No trace of teeth along 
anterior face of segments. 
Fourth-sixth pairs of cirri of about the same structure, the number,of segments 
only slightly increasing from the 4" to the last. 
Sixth pair has 21 segments in each ramus; the distal segments are longer than the 
basal, but all of them longer than broad. Most segments (PI. XVII, fig. 19) bear three 
pairs of spines on their inner faces, two pairs of long ones, and a third (the lower) pair of 
rudimentary spines. A few spines (forming together a little tuft) are disposed between the two 
of each pair of longer spines. Hairs on the dorsal surface of each segment, close to its upper 
margin, not quite three-fourths of the length of the segment itself. 
Penis broken off and lost in the specimen I investigated. 
This species was observed at: 
Stat. 105. July 4, 1899. Lat. 6°8'N., Long. 121° 19’ E. Depth 275 m. Coral-bottom. A large 
incomplete specimen and a small one attached to it. 
Geographical and bathy metrical distribution. This species, which was founded 
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