47 
de vigtigste Indvolde mod stor Tydelighed sldnnede igjon- 
nem de sserdeles tynde Integumenter. Meget ipinefaldende 
var saaledes den udssedvanlig store i den forreste Del af 
Forkroppen liggende kugleformige Have, der var fyldt med 
rodfarvet Indhold. 
Laengden af det unders0gte Exemplar er. maalt fra 
Enden af Antennebladene til Spidsen af de ydre Haleved- 
hamg 20™, en Storrelse, der betydelig overskrider samme 
bos de bidtil bekjendte Arter af denne Slaegt. 
Porekomst og Udbredning. Et enkelt. temmelig vel 
vedligeholdt Exemplar, en fuldvoxen Hun, optoges under 
Expeditionens lste Togt med Bundskraben fra et Dyb ai 
498 Favne i Havet Vest af Trondhjemsljorden (Stat. 87). 
Under 2det Togt erholdtes desuden et stserkt mutileret Ex- 
emplar af samme Art lamgere Nord i Havet udenfor Helge- 
land (Stat. 124) fra 350 Favnes Dybde. 
Da begge disse Stationer til borer den kolde Area, er 
Arten utvivlsomt at betragte som en a'gte arktisk .form, 
hvis Udbredning vistnok for en Del vil kunne antages at 
lalde sammen med de pvrige paa de nsevnte Stationer er- 
holdte Dybvandsdyr. 
Gen. Parerythrops, G. 0. Sars, 1869. 
Unders0gelser over Christiamafjordeus Dybvandsfauna. 
8. Parerythrops spectabilis, G. 0. Sars, n. sp. 
(PI. V, Fig. 5—12). 
Parerythrops spectabilis, G. 0. Sars, Prodromus description^ Crust, etc. 
No. 32. 
Artscharaeteristik. .Rygskjoldet stort og opsvulmet, 
1Ul ‘d skarpt markeret Oervicalfure og Panderanden i Midten 
vinkelformigt fremspringende. 0inene usaidvanlig smaa med 
gulrodt Pigment. 2det Par F oleres Blad kjendeligt lamgere 
en d lste Pars Skaft, aflangt-rhomboidalt, 3 Gange saa langt 
sonr bredt, med Enden sserdeles skjsevt afskaaret og det 
tandformige Fremspring ved det ydre Hjorne meget lidet. 
Hannens lste Par Bagkropslemmer rudimentere, af samme 
U’dseende som bos Hunnen. Det midterste Halevedlueng 
v °d Spidsen bevsebnet med 6 omtrent ligestore Torner. De 
ydre Halevedhtengs indre Plade langs den indre Kant under 
Pandborsterne forsynet med talrige smaa Torner; Otolitben 
kssedvanlig liden. Legemet prydet med smukt purpurfarvet 
Figment. Lamgden indtil 26 mn ‘. 
Findested. Stat. 31, 237. 
Bemserkninger. Fra Slmgtens 0 vrige Arter, mod 
bvilke nservserende Form viser en stor babituel Lighed, vil 
den strax kunne kjendes, foruden ved sin meget betydelige 
tbe principal viscera shone with great distinctness through 
the exceedingly thin integuments. Very conspicuous, for 
example, in the anterior portion of the cephalo-thorax, was 
the unusually large and globular stomach, with its led- 
coloured contents. 
The length of the specimen examined, measured from 
the tip of the antennal scales to the point oi the outer 
caudal appendages, reaches 20™, a size considerably ex- 
ceeding that attained by any previously known species of 
the genus. 
Occurrence and Distribution. — A single, compara- 
tively uninjured specimen, viz. a full-grown female, was 
brought up, on the first cruise of the Expedition, in the 
dredge, from a depth of 498 fathoms, in the open sea, 
west of the Trondhjemljord (Stat. 87). On the second 
cruise, an example of the same species was obtained, in a 
very mutilated condition, farther north, oh Helgoland (Stat. 
124), from a depth of 350 fathoms. 
Both these Stations being in the cold area, the species 
may unquestionably be regarded as a true Arctic form, the 
distribution of which, to some extent, no doubt corresponds 
with that of the other deep-sea animals collected at the 
said Stations. 
Gen. Parerythrops, G. 0. Sars, 1869. 
Unders0gelser over Ohristianiafjordens Dybvandsfauna. 
8. Parerythrops spectabilis, G. 0. Sars, n. sp. 
(PI. Y, figs. 5—12). 
Parerythrops spectabilis, G. 0. Sars, Prodromus descriptions Crust, etc., 
No. 32. 
Specific Character. — Carapax large and tumid, with 
the cervical grove sharply defined, and the frontal margin 
angular and projecting in the middle. Eyes remarkably 
small, and furnished with a yellowish-red pigment. Scale 
of 2nd pair of antennae perceptibly longer than peduncle 
of 1st pair, oblongo-rhomboidal in form, three times as 
long as broad, with tbe end very obliquely truncate, and the 
dentiform projection at the outer corner exceedingly small. 
First pair of pleopoda in male rudimentary, and exhibiting 
the same appearance as those in female. Telson armed at 
the point with 6 spines, about equal in size. Inner plate 
of outer caudal appendages furnished along the inner border, 
beneath the marginal bristles, with numerous small spines; 
the otolith remarkably small. Body brilliantly coloured 
with a beautiful purple pigment. Length reaching 26"”". 
Locality. — Stats. 31, 237. 
Remarks. From the other species of the genus, 
to which the present form exhibits great habitual resem- 
blance. it may be readily distinguished, apart from its very 
