/ 
P empusa, Wilson, vb'kelig er identisk med vor Art. I 
de arktiske Have er den derimod aldrig bleven oberveret 
og Arten synes derfor idethele at maatte betragtes som en 
sydlig Form. 
as 1 believe, P. empusa, Wilson, found there, is really identical 
with our species. In the Polar Seas, on the other hand, it 
has never been observed, and hence we are, on the whole, 
warranted in regarding the species as a southern form. 
8. Pallene producta, G. O. Sars. 
(PI. Ill, fig. 2, a— d). 
Pallene producta , G. 0. Sars, Pycnogonidea borealia et 
arctia, No. 8. 
Artscharaeteristik. Meget nser P. brevirostris, men 
af betydelig slankere Kropsform. Llovedsegmentet, D/a Gang 
til saa langt som de ovrige tilsammen, med sterdeles smal 
og forlsenget Hals og stserkt fortykket Pandedel. Gieknuden 
omtrent i Midteu at Legemets Laengde, stserkt ophoiet og 
konisk tilspidset. Snabclen som bos P. brevirostris. Sax- 
fodderne ligeledes af samme Bvgning, men forholdsvis noget 
storre og mod stserkere forlsengede Fingre. He falsko Fod- 
der fsestede i nogen Afstaud fra de forreste ISidefortsatser 
til Siderne af Halsen; Bygningen som lios P. brevirostris. 
Gangfodderne sterdeles spinkle og forlsengede, med 2det 
Hofteled over dobbelt saa langt som de 2 ovrige tilsammen, 
Fodleddet omtrent som bos foregaaende Art, men Bikloerne 
forholdsvis lsengere. Dyret gjennemsigtigt, uden al Pigmen- 
tering. Legemets Laengde 2’"'", Spandvidde 18" m . 
Bemserkninger. Nservserende Form staar i saagodt- 
som alle anatomiske Detailler saa sserdeles nser P. brevirostris, 
at jeg har vseret i nogen Tvivl om dens Berettigelse som 
selvstsendig Art. Da imidlertid Dohrn har gjort os bekjendt 
med flere, som det synes, ligesaa nserstaaende Arter fra 
Middelbavet, og jeg ikke har fundet nogen tydelige Over- 
gange mellem nscrvaerende Form og den typiske Art, har 
jeg troet at maatte hsevde dens specifiske Forskjel. I sin 
ydre Habitus viser den en paataldende Lighed med den af 
Dohrn under Benmvnelson P.phantoma fra Middelhavet be- 
skrevne. Art, men skillcr sig meget bestemt ved For men af 
FodJeddet og ved de betydelig storre og ganske g-latte 
Bikloer. 
Beskrivelse. Legemets Laengde er omkring 2“”, med 
en Spandvidde at 18’"“; altsaa adskilligt storre end hos 
foregaaende Art. 
Formen er (se PI. Ill, Fig. 2) idethele betydelig spink- 
lere end hos den typiske Art, saavel hvad selve Kroppen 
som I odderne angaar. llovedsegmentet er her af en alde- 
les excessiv Laengde, mere end D/g Gang laengere end de 
ovrige tilsammen, og navnlig udmserket ved den overor- 
dentlig stserkt forlsengede og smalt cylindriske Hals, der 
meget skarpt afgraendser sig fra den stserkt udvidede, nse- 
sten kolleformige Pandedel. De 2 sidste Kropssegmenter er 
som hos- P. brevirostris fuldstsendig sammenvoxne med hin- ! 
8. Pallene producta, G. 0. Sars. 
(PI. Ill, fig. 2, a-d). 
Pallene producta, G. 0. Sars, Pycnogonidea borealia et 
arctica. No. 8. 
Specific character. Very closely approximating P. 
brevirostris, hut of a much more slender form of body. 
Cephalic segment as long as one and a half times all the others 
taken together, with neck extremely slim and prolonged and 
frontal part greatly tumificated. Oculiferous tubercle located 
at about the middle of the length of the body, exceedingly 
protuberant and conically acuminated. Proboscis as in P. 
brevirostris. Chelifori similar in structure as well, but rela- 
tively somewhat larger and with more prolongated lingers. 
False legs attached to the sides of the nock, at some di- 
stance from the foremost of the lateral processes; structure 
as in P. brevirostris. Ambulatory legs exceedingly slender 
and prolongated, with 2nd coxal joint more than twice as 
long as the two others taken together; propodal joint nearly 
as in preceding species, but the auxiliary claws relatively 
longer. Animal translucent, without any pigmentation what- 
ever. Length of body 2 mm , extent 18""". 
Remarks. The present form approaches in almost all 
its anatomical details so remarkably near to P. brevirostris, that 
I have felt much doubt respecting its claim to rank as a 
distinct species. As Dohrn has, however, made us acquainted 
with several, it would seem, as closely approximating species 
from the Mediterranean, and not having myself found any 
distinct transitions between the present form and the typi- 
cal species, I have seen fit to maintain its specific distinc- 
tion. In its external habitus it exhibits a striking resemblance 
to Dohrns’s Mediterranean specis P. phantoma, but differs 
very decidedly in the form of the propodal joint and the 
much larger and perfectly smooth auxiliary claws. 
Description. The body measures about 2 mm in length 
and has an extent of 18”””; therefore a good deal larger 
than in the preceding species. 
The form (se PI. Ill, tig. 2) is. on the whole, con- 
siderably more slender than in the typical species, both as 
regards the body and the legs. The cephalic segment has, 
in this animal, quite a remarkable length, more than one and 
a halt times the length of the others taken together, and is, in 
particular, distinguished by the greatly prolongated and narrow 
cylindrical neck, which is very sharply defined from the 
strongly expanded, almost claviform frontal part. Hie 2 last 
segments of the trunk are, as in P. brevirostris, completely 
