150 
Beskrivelse af Hunnen. Legemet er (se PI. XIII, 
Pig. 1) temmelig tvkt nxed rund og hvsclvet Ryg og for- 
holdsvis ikke meget lioie Epimerer. 
Hovedet er af samme Laengde som lste Forkropsseg- 
ment og har Sidehjornerne noget iidtrukne og tilspidsede. 
lste Par Epimerer en nedentil temmelig starlet ud- 
videde og jevnt afrundede; 4de Par er neppe bredere end 
de ovrige og i den bagre Kant kun svagt udrandet; 5te 
Par er kjendeligt bredere end lioit og af afrnndet firkantet 
Form. 
3 die Bagkropssegments Sideplader er bagtil ikke saa 
staerkt ndtrukne som lios de i det foregaaende omtalte Arter, 
men ender kun med et spidst TTjorne. De folgende Seg- 
menter er oventil jevnt hvselvede, uden Kjol eller Fortsatser. 
0ineue er meget smaa og beliggende langt node paa 
Siderne af Hovedet. De er af en temmelig ufuldkommen 
Bygning, idet de egentlige Synselementer kun er svagt 
fremtrsedende. Diepigmentet er af en eiendommelig lys, 
mesten melkehvid Farve (horaf Artsbensevnelsen). 
lste Par Folere har Sveben noget laengere end Skaftet 
og sammensat at 11 Led, livoraf det lste er temmelig stort. 
Bisvoben er ikke meget kortere end den egentlige Svobe 
og 4-leddet. 
2det Par Folere er adskilligt ltengere end lste Par ■ 
og har Svoben temmelig forbenget og sammensat af 16 Led. 
Munddelene kunde ikke mermere underspges hos det 
foreliggende Exemplar; heller ikke de 2 forste Fodpar; 
men disse sidste synes dog, saavidt det kunde sees, ikke at 
adskille sig i nogen vtesentlig Grad fra samme hos fore- 
gaaende Art. 
De 3 hagerste Fodpar er alle omtrent af ens Laengde. 
Hofteleddet har den ssedvanlige pladedannede Form og til- 
tagei' noget i Stprrelse bagtil. Af de ovrige Led udmserker 
det 3die sig ved sin korte og tykke Form. 
Hale vedhaen get (se Fig. I a) er omtrent af samme 
Lsengde som Stammen paa sidste Par Halefodder. Det er 
ligesom hos foregaaende Art kort og bredt, pladeformigt, 
men adskiller sig derved, at Spidsen ikke er indskaaret, 
men kun ganske svagt udrandet i Midten. 
Farven var i frisk Tilstand hvidagtig og halvt gjen- 
nemsigtig. 
Lsengden af det undersogte Exemplar var 10“’". 
Forekomst og Udbredning. 1 enkelt Exemplar af 
denne Form erholdtes under Expeditionens lste Togt i 
Havet melleiu Island og Norge (Stat. 96) fra et Dyb af 
805 Favne. Da Stationen tilhorer den kolde Area, er det 
rimeligt at nservraronde Art er en ;egte arktisk Form. 
Description of the Female. — The body (see PI. 
XIII, fig. 1) rather thick, with round and arching back 
and relatively not very deep epimera. 
The head of the same length as the 1st thoracic seg- 
ment, with the lateral corners somewhat produced and 
pointed. 
The 1st pair of epimera are considerably dilated below, 
and uniformly rounded; the 4th pair are scarcely at all 
broader than the rest, and but slightly emarginate along 
the posterior border; the 5th pair are appreciably broader 
than high, and of a rounded, quadrate form. 
The lateral plates of the 3rd abdominal segment are 
not so much produced posteriorly as in the preceding 
species, terminating merely with an acute corner. The 
succeeding segments are uniformly arched above, without 
either keel or projection. 
The eyes are exceedingly small, and placed far down 
the sides of the head. In structure, they are rather imper- 
fect, the true elements of vision being but slightly developed. 
The ocular pigment has a peculiar light, well-nigh lacteal 
colour (hence the specific designation). 
The 1 st pair of antenna} have the flagellum somewhat 
longer than the peduncle, and composed of 11 articulations, 
the 1st rather large. The secondary flagellum is not much 
shorter than the true flagellum, and has 4 articulations. 
The 2nd pair of antennae are considerably longer than 
the 1st, with the flagellum rather elongate and composed 
of 16 articulations. 
The oral appendages could not be closely examined 
in the only specimen taken; this was also the case with 
the 2 first pairs of legs ; but the latter had no appearance 
of differing in any essential degree from those in the pre- 
ceding species. 
The 3 posterior pairs of legs are all about equal in 
length. The basal joint has the usual lamelliform shape, 
and increases somewhat in size posteriorly. Of the remain- 
ing articulations, the 3rd is characterized by its short and 
thick form. 
The telson (see fig. 1 a) is about of the same length 
as the trunk on the last pair of caudal stylets. As in the 
preceding species, it is short and broad, lamelliform, but 
differs in the point not being incised, but merely having a 
slight emargination in the middle. 
Colour in a fresh state whitish, with the hody semi- 
translucent. 
Length of the specimen examined 10“’". 
Occurrence and Distribution. — • A single specimen 
of this form was obtained on the 1st cruise of the Expedi- 
tion. in the tract of ocean stretching between Iceland and 
Norway (Stat. 97), from a depth of 805 fath oms, This 
Station being in the cold area, there is good reason for 
assuming the present species to be a true Arctic form. 
