24 
5. Hemilamprops uniplieata, G. 0. Sars. 
(Pl. XVI, XVII.) 
Lamp-ops uniplieata, G. 0. Sars, Undevsogelser over Hardangerfjordens Fauna I, Chr. Vid. Selsk. 
Forh. 1871, p. 27. 
Specific Characters. —Body in both sexes exceedingly slender and elongated, 
with the anterior division somewhat vaulted dorsally and rather sharply marked 
off from the posterior, though its last segment is not much broader than the 1st 
caudal one. Tail considerably exceeding the anterior division in length and 
gradually attenuated distally. Carapace about the length of the exposed part ot 
the trunk, and exhibiting on each side, somewhat in front of the middle, a single 
very conspicuous, obliquely curved fold or carina, upper margin straight, lower 
evenly arcuate, anterior extremity, viewed laterally, conically tapered, viewed 
dorsally, bluntly rounded; pseudorostral projection somewhat produced, though 
rather short; frontal lobe slightly keeled dorsally. Eye very small, though 
distinct, with red pigment. Inferior antennae of male not attaining the length 
of the body. 1st pair of legs slender and elongated, almost equalling in 
length the anterior division of the body, last joint very narrow and fully as 
long as the penultimate one; 2nd pair with the antepenultimate joint longer 
than the last 2 combined, and coarsely spinous inside; 3rd pair in male 
with the outer 2 joints peculiarly transformed. Uropoda very slender, exceeding 
in length the last 2 caudal segments combined, inner ramus much longer than 
the outer, and armed inside with numerous short spinules, outside with about 
16 setse. Telson about the length of the basal part of the uropoda, narrow 
linguiform in shape, and armed with from 12 to 16 marginal spines, 3 of which 
issue from the rounded tip and are somewhat longer than the others. Colour 
bright orange. Length of female 7 mm., of male about the same. 
j Remarks. — The present species is easily distinguishable from the 2 pre¬ 
ceding ones by the form and sculpture of the carapace, as also by the structure 
of the terminal caudal appendages. The colour also is rather characteristic. 
Occurrence. —I first detected this species at Mosterhavn in the outer part 
of the Hardanger Fjord, and have subsequently also met with it in 3 other lo¬ 
calities of the west coast, viz., at Aalesund and Christiansund, in the Trondhjem 
Fjord, and finally off the Lofoten Islands. It is a true deep-water form, only 
occurring in depths of from 60 to 150 fathoms, sandy bottom. 
Distribution. —Stat. 31 & 124 of the Norwegian North Atlantic Expedition, 
both belonging to the cold area, outside the Norwegian coast. 
