I41 
composed of 11 segments. The terminal segments of the longer ramus are slightly longer than 
those of the shorter ramus. The six inferior segments thickly clothed with hairs, the remaining 
segments with few hairs on the surface but with a well developed row of stronger hairs near 
the extremity. 
Cirrus of second pair has also slightly unequal rami: a shorter ramus composed of 11 
broader and a longer ramus of 13 somewhat longer segments. Hairs scattered over the whole 
surface of the segments, more thickly disposed on the segments of the shorter ramus. The hairs 
of the longer ramus are longer and more delicate. 
Cirrus of third pair has 15 and 17 segments in the slightly unequal rami. Hairs on 
the lower segments numerous, irregularly disposed; grouped in pairs along the anterior margin 
of the distal segments, one pair moreover being disposed on the posterior margin, near the 
extremity of each segment. 
In the cirri of the fourth-sixth pairs the number of segments gradually increases. 
Those of the last pair have 28 segments in each ramus. The number of pairs of spines on the 
anterior side is 3 as a rule, those of the third or most inferior pair being always extremely delicate. 
The caudal appendage is very long and slender. It has about 26 segments and 
reaches with its extremity beyond the extremity of the 12tt segment of the sixth cirrus. Very 
long and delicate hairs form a wreath at the extremity of some of the segments and are 
almost entirely absent at the end of others: See Pl. XIII, fig. 1o. Length of last segments 
about four times their breadth. 
’ The penis is relatively thick at the base, much narrower at the extremity. Its surface 
is distinctly ringed and delicate hairs are scattered over the rings and grow more numerous 
towards the extremity. 
This species was collected at the following Stations: 
Stat. 45. April 6, 1899. Lat. 7°24'S., Long. 118° 15’.2 E. Depth 794 m. Bottom: fine grey 
mud. Five specimens in two lots, all of them attached to cylindrical black sticks 
of a nature unknown to me. 
Stat. 46%. April 7, 1899. Lat. 8°o'.5 S., Long. 118°34'.7 E. Depth 1600 m. Bottom: mud. 
Two specimens attached to a black cylindrical stick. 
Stat. 151. August 12, 1899. Lat. 0°12’.6S., Long. 129°48’ E. Depth 845 m. Bottom: fine grey 
mud. Numerous specimens attached to a small bough or stem, which is hollow, 
and the nature of which is unknown to me. 
Stat. 284. January 18, 1goo. Lat. 8°43'.1S., Long. 127°16'.7 E. Depth 828 m. Bottom: grey 
mud. One specimen attached to the needle of a glass-sponge. 
General Remarks. The specimens from the different Stations and even those of one 
Station are slightly different from one another — yet there can beno question about their belonging 
to the same species. The most important differences are those in the distinctness of the line 
running parallel to the axial ridge, on that part of the scutum and tergum which lies between 
that ridge and the occludent margin; next, in the size and development of the teeth with which 
rostrum and carina articulate together, and finally in the greater or lesser distinctness of the 
grooves on the surface of the rostrum. 
Of the known species, V. cassis comes nearest to V. crista//ina, Gruvel, the main 
=, 
