EVARXE HITBRECHTI. 361 



smooth, and the tentacular and cirriform appendages are also smooth. The palpi are 

 large, slightly tapered, and smooth. Body rather short and broad, about thirty-one 

 bristled segments, much tapered posteriorly, and furnished with a caudal rudder in the 

 shape of a thick style with a membranous flap, tapered from base to apex. In structure 

 it is delicate and brittle, and is tinted of a deep madder-brown both dorsally arid ventrally. 

 Segmental eminence marked, but no distinct papilla is visible. Scales, fifteen pairs, thin 

 but tough, rounded in front, rest large and ovate, completely covered with minute spines, 

 but with a smooth edge ; some cling firmly to the peduncles. Feet of considerable 

 length, dorsal division rudimentary ; bristles translucent, large, long, and acutely pointed, 

 with wide rows of spines like an JEquisetum ; ventral division large, ovate at the tip, and 

 having a broad fan of very long slender bristles with long spinous regions and acute tips, 

 mostly bifid. Yentral cirrus comparatively long and slender. 



Habitat. — Procured by the ' Triton ' in August, 1882, at 600 fathoms ; at Station 2, 

 500 fathoms ; in the tow-net at 300 fathoms, and again at the surface. 



Length about 14 mm. 



Head (Plate XXVIII, fig. 6) comparatively small, broadly ovoid, with a median 

 groove and two prominent anterior peaks. Both pairs of eyes are dorso-lateral in 

 position, their largest surface in the preparation being lateral. Their large size and 

 the limited area of the head leave little of the lateral region free, viz. a small portion at 

 the peaks, the narrow line of separation between the pairs, and the brief space between 

 the last and the nuchal collar. No distinct trace of a corneal opacity is present. From 

 the contour of the head the anterior pair look forward and outward, the posterior out- 

 ward and upward. Both pairs are partially seen from the dorsum. In young examples 

 the eyes are considerably smaller. The long median tentacle is pale, slightly enlarged 

 immediately above the basal region (in spirit), then it tapers to the filiform tip. Its 

 surface is quite smooth, the median nerve-trunk being readily seen through its translucent 

 granular layer. The lateral tentacles are pale, subulate, and small, with a filiform tip 

 and a madder-brown basal region. They likewise are quite smooth. The palpi are 

 smooth, of moderate length, and somewhat thick, with comparatively short tapering tips. 

 They have a faint tinge of madder-brown at the base. The tentacular cirri, the upper of 

 which is, as usual, larger than the lower, have a similar form to the median tentacle. 



Body covered by the large scales ; of about thirty-one bristled segments, and com- 

 paratively short and broad. It is slightly narrowed in front, and tapers somewhat 

 rapidly posteriorly. The dorsum has a madder-brown hue, with transverse elliptical 

 markings in the middle, paler on the feet. Posteriorly the segments have very beautiful 

 patterns, the madder-brown ellipse being surrounded by a pale and somewhat crenate 

 line. The entire under surface is madder-brown, with a pale median band, and iridescent, 

 the darker region in front showing fine metallic lustre. The feet are also slightly tinted 

 of the same brownish hue, the ventral cirrus being thus rendered conspicuous, and 

 between its base and the body a pale transverse line occurs. The segmental eminence is 

 marked, but no distinct papilla is visible— a feature perhaps associated with the pelagic 

 habits of the species. 



Posteriorly the body terminates in a single comparatively thick style, which arises 

 beneath the anus and to the left. It remains nearly cylindrical from base to tip— which 



