of Edinburgh, Session 1881 - 82 . 
687 
Boreomysis nobilis, G. O. Sars. 
Boreomysis nobilis, G. O. Sars, “Crustacea et Pycnogonida Nova 
in itinere 2do et 3tio Expeditionis Norvegiese anno 1877 et 1878 
collecta,” Archiv. for M atkematik og Naturvidenslcab, 1880, p. 428. 
Animal more or less mottled and suffused with red, younger 
specimens are paler in colour, but apparently the telson is always 
red. Piostrum horizontal, very acute, nearly as long as the eye when 
porrected. Antero-lateral corner of carapace produced into a 
triangular process projecting over the base of the inferior antennae ; 
hinder margin of carapace excavated in the centre, and there exposing 
the last segment of the pereion. Eyes rather flattened, broad, reach- 
ing slightly beyond the side of the carapace, having a small tubercle 
on the inner side of the peduncle and just below the well-developed 
dark-coloured eye itself. Upper antennae having the second joint of 
the peduncle short, not half the length of the third, and not so 
patelliform as is usual in this genus. The lower antennae have the 
scale much elongated, narrow, and gradually tapering, twice the length 
of the peduncle of the upper antennae, its outer margin plain with a 
small spine at the apex ; the apex slopes at once towards the inner 
margin and together with that margin is setose. Telson long, but 
not quite reaching the end of the inner uropods, which show no trace 
of an acoustic organ, and much shorter than the outer, excavated 
above, and cleft to about one-fifth of its length, its sides unarmed for 
half their length, but their distal half set with numerous (about 30) 
slender, closely-arranged, subequal spines, the cleft portion of the 
telson closely denticulated. Length about 65 millemetres. 
Several specimens taken at Station 8, in 540 fathoms. 
The above description was drawn up in 1880, when the specimens 
came into my hands. On comparison with the description published 
shortly afterwards by my friend Professor Sars, there can be no doubt 
of the identity of the “ Knight Errant ” example with the single male 
which was dredged by the Norwegian Expedition in 1878 in 459 
fathoms, 79° O' 59" N. lat., 5° 40' E. long. I may add to my original 
description that the tarsus of the legs is composed of three articula- 
tions, as in the type specimen of Sars. 
