47 



de vigtigste Indvolde med stor Tydelighet! skinnede igjen- 

 nem de særdeles tynde Integumenter. Meget ioinefaldende 

 var saaledes den udsædvanlig store i den forreste Del af 

 Forkroppen liggende kugleformige Mave, der var fyldt med 

 rodfarvet Indhold. 



Længden af det undersogte Exemplar er. maalt fra 

 Enden af Antennebladene til Spidsen af de ydre Haleved- 

 hæng 20'°"', en Størrelse, der betydelig overskrider samme 

 hos de hidtil bekjendte Arter af denne Slægt. 



Forekomst og Udbredning. Et enkelt, temmelig vel 

 vedligeholdt Exemplar, en fuldvoxen Hun. optoges under 

 Expeditionens Iste Togt med Bundskraben fra et Dyb af 

 498 Favne i Havet Vest af Trondhjemsfjorden (Stat. 87). 

 Under 2det Togt erholdtes desuden et stærkt mntileret Ex- 

 emplar af samme Art længere JM ord i Havet udenfor Helge- 

 land (Stat. 124) fra 350 Favnes Dybde. 



Da begge disse Stationer tilhører den kolde Area, er 

 Arten utvivlsomt at betragte som en ægte arktisk Form, 

 hvis Udbredning vistnok for en Del vil kunne antages at 

 takle sammen med de øvrige paa de nævnte Stationer er- 

 holdte Dybvandsdyr. 



(Ten. Paieryl ln-ops, G. O. Sårs. 1869. 

 Undersøgelser over Christianiafjordena Dybvandsfauna. 



8. Parerythrops spectabilis, G. 0. Sårs. n. sp. 



(Pl. V, Fig. r>— 12). 



Parerythrops spectabilis, >'•. < >. Sårs, Prodromus descriptionis Crust. etc. 

 No. 32. 



Artseharacteristik. Rygskjoldet stort og opsvulmet. 

 med skarpt markeret Cervicalfure og Panderanden i Midten 

 viukelformigt fremspringende. Øinene usædvanlig smaa med 

 gulrødt Pigment. 2det Par Føleres Blad kjendeligt længere 

 end Iste Pars Skaft, aflangt-rhomboidalt, 3 Gange saa langt 

 som bredt, med Enden særdeles skjævt afskaaret og det 

 tandformige Fremspring ved det ydre Hjørne meget lidet. 

 Hannens Iste Par Bagkropslemmer rudimentære, af samme 

 Ddseende som bos Hunnen. Det midterste Halevedhæng 

 ved Spidsen bevæbnet med 6 omtrent ligestore Torner. De 

 ydre Halevedhængs indre Plade langs den indre Kant under 

 Pandborsterne forsynet med talrige smaa Torner; Otolithen 

 usædvanlig liden. Legemet prydet med smukt purpurfarvet 

 Pigment. Længden indtil 2(j""\ 



Findested. Stat. 31, 237. 



Bemærkninger. Fra Slægtens øvrige Arter, med 

 hvilke nærværende Form viser en stor habituel Lighed. vil 

 den strax kunne kjendes, foruden ved sin meget betydelige 



the prinsipal viscera shone with great distinctness through 

 the exceedingly thin integuments. Very conspicuous, for 

 exaniple. in the anterior portion of the cephalo-thorax. was 

 tlir unusually large and globular stomach. with its red- 

 coloured contents. 



The length of the specimen examined, measured from 

 tbe tip of the antennal scales to the point of the outer 

 caiulal appendages, reaches 20""", a size considerably ex- 

 ceeding that attained by any previously known species of 

 the genus. 



Oeeurrence and Distribution. — A single, compara- 

 tively uninjured spepimen, viz. a full-grown female, was 

 brought up, on the first cruise of the Expedition. in the 

 dredge, from a depth of 498 fatboms, in the open sea, 

 west of the Trondhjemfjord (Stat. 87). On the second 

 cruise, an example of tbe same species was obtained. in a 

 very mutilated condition. fartber north, off Helgeland (Stat. 

 124), from a depth of 350 fatboms. 



Both tbese 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. IF*arer*ytlii-ops, G. 0. Sårs, 1869. 

 Undersøkelser over Christianiafj ordens Dybvandsfauna. 



8. Parerythrops spectabilis, G. 0. Sårs, n. sp. 



(Pl. V. figs. r.— 12). 



Parerythrops spectabilis, (■. ( ). Sårs, Prodromus descriptionis Crust. etc, 

 No. 32. 



Speciflc Character. -- Carapax large and tumid. with 

 the cervical grove sharply defined, and the frontal margin 

 angular and projecting in the iniddle. Eves remarkably 

 small, and furnished with a yellowish-red pigment. Scale 

 of 2nd pair of antennæ perceptibly longer than peduncle 

 of Ist pair. oblongo-rhomboidal in form, three times as 

 long as broad. with the end very obliquely truncate, and the 

 dentiform projection at the outer corner exceedingly small. 

 First pair of pleopoda in male rudimentary, and exhibiting 

 tbe same appearance as those in female. Telson armed at 

 the point with (i spines. about equal in size. Inner plate 

 of outer ca udal appendages furnished along the inner bonhr. 

 beneath the marginal bristles, with numerous small spines; 

 the otolith remarkably small. Body brilliantly coloured 

 with a heautiful 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 



