438 HALIPLENES MAGNA. 
currata. At the tip of the extruded proboscis are dark glandular masses. A touch of yellow 
pigment on each side above the first feet. 
Feet with the dorsal cirri longer than P. longicirrata, though the setigerous processes 
of the first and second feet are small. 
Bristles shorter and more slender than in P. longicirrata, with the distal end of the shaft 
serrated, and the terminal piece is much narrower than in the former species, and presents 
no hook at the tip. 
Synonyms. 
1909. Pelagobia serrata, Southern. Irish Se. Invest., No. 3, p. 3, pl. i, figs. 2, 3. 
1916. Fr s Fauvel. Camp. Sc. Monaco, Fasc. xlvii, p. 62. 
Habitat.—Frequents similar regions to the former species, but at greater depths off the 
West Coast of Ireland, viz., from 600 to 1000 fathoms (Southern). 
The imperfect condition of the examples leaves a certain margin of doubt, but so far 
as can be observed at present, Mr. Southern’s distinctions are reasonable. 
MaAvupasia Ca&ca, Viguier, var. ATLANTICA, Southern, 1909. 
Specific Characters—Head with four slender tentacles and three pairs of tentacular 
cirri of nearly equal length, and traces of a fourth pair. No eyes. Nuchal organs well de- 
veloped and curiously lobed. 
Body 4:55 mm. or more in length, with thirteen setigerous segments. Foot short and 
blunt, the dorsal and ventral cirri projecting beyond its tip. The dorsal cirrus is foliaceous, 
the ventral long and slender. The bristles are more slender and elongate than those of the 
type, and the terminal piece rests on a process considerably within the tip of the shaft, which 
is pointed. ‘The terminal piece is very slender. 
SYNONYMS. 
1886. Maupasia ceca, Viguier. Arch. Zool. Expér., t. iv, p. 382, pl. xxi, figs. 14-20. 
1909. 55 » var. atlantica, Southern. Irish Sc. Invest., No. 3, p. 4, pl. 1, figs. 4 and 5. 
1912. 5 ,» Ehlers. Nat. Antarctic Exped., vol. vi, p. 15. 
1913. a » Idem. Polych. Deut. Sudpol. Hxped., vol. i, Zool. v, p. 462. 
1922. ms » McIntosh. Ann. Nat. Hist., ser. 9, vol. ix, p. 1. 
Habitat.—Secured in a tow-net on trawl in 411 fathoms, im lat. 51° 54’ N. and long. 
11° 57’ W. (Southern). 
Distribution.—Atlantic, Mediterranean, Antarctic. 
HALIPLENES MAGNA, Southern, 1909. 
Specific Characters.—The head is rounded in front; dorsal tentacles as long as the head 
is wide, and slightly longer than the ventral pair, which are placed far back, just in front 
of the mouth. At the base of the head dorsally is a wide collar, projecting laterally, 
and continued on the ventral side behind the mouth. No eyes. Body 3—6 mm. long ; 
