1-1)1 



Halevedhænget (se Fig. 5 o) er forholdsvis lidet og 

 afstumpet i Spidsen samt klovet til foran [Midten. 



Farven er hvidagtig, gjennemsigtig, uden tydelig Pig- 

 mentering. 



Længden synes ikke at overskride 8 mm . 



Forekomst og Udbredning. Vi har tåget denne Art 

 paa ikke mindre end 6 forskjellige Stationer, alle tilhørende 

 den kolde Area. Af disse ligger de 5 (St. 31, 124, 137, 

 200, 251) i Havet udenfor Norges vestlige og nordlige Kyst, 

 den 6te (St. 362) NV af Spitsbergen; Dybden fra 350 til 

 633 Favne. 



Artens for Tiden bekjendte Udbredningsfelt er her- 

 etter det østlige Afheld mod Nordhavets store Dyb fra 

 den 62de til den .si ule Bredegrad. 



Tlie telson (fig. 5 ø) is comparatively small, and obtuse 

 at the point, as also cleft beyond the middle. 



Colbur whitish, translucent, without distinct pigmenta- 



tion. 



Length apparently not exceeding 8 ". 



Oeeurrence and Distribution. — This species was 

 tåken on the Expedition at as many as 6 different Stations, 

 all belonging to the cold area. Five (Stats. 31, L24, 137. 

 200, 251) were located off the western and northern shores 

 of Norway, the sixth (Stat. 362) la\ north-west of Spitz- 

 bergen; depth ranging from 350 to 634 fathoms. 



Henee. the trad throughoul which the species is at 

 present known to he distributed, comprises the eastern 

 slope of the sea-bed, where it shelves toward the greal 

 depths of the Northern Ocean, — from the 62nd to the 

 80th parallel of latitude. 



Gen. 2. B.vblis, Boeck. 187o. 

 Crust. amphip. boreal. & aret. 



62. Byblis abyssi, G. O. Sårs. n. sp. 



(Pl. XVI, Fii-. ii). 

 Byblis abyssi, (i. ( ). S;iis. ('rust. & Pycnogonida neva etc. No. '.'•'.'>. 



Artseharacteristik. Legemet smalt og forhenget, med 

 rund Ryg og forholdsvis smaa, afrundede Epimérer. Ho- 

 vedet ikke meget forhenget, i Spidsen skraat afstumpet, 

 med Sidehjornerne tilrundede. 3die Bagkropssegments Side- 

 plader bagtil jevnt afrundede; 4de og sidste Segment oventil 

 med en sammentrykt Pukkel. Ingen Øine. Iste Par Fø- 

 lere omtrent af Legemets halve Længde, med Skaftets Iste 

 Led kort og tykt. 2det Led betydelig Lengere og smalere. 

 Svøben over dobbelt saa lang som Skaftet; 2det Par af 

 hele Legemets Længde. med alle Skaftets Led synlige ud- 



vendigt, 3die Led ragende fortil langt ud 



over 



Hovedets 



Spids. de 2 sidste omtrent af ens Længde. Svoben lamgere 

 end Skaftet og besat med lange tynde Børster. Fødderne 

 af sædvanlig Bygning. Hofteleddet paa sidste Fodpar bagti] 

 udvidét til en bred børstebesat Lap, der rager ud over 

 3die Led; sidste Led smalt, lineært. Halefødderne alle af 

 ens Udseende, successivt aftagende i Længde bagtil. Hale- 

 vedhænget lidet, i Enden afstumpet og forsynet med et 

 kort Indsnit. Farven hvidagtig. Længden 12'""'. 



Gen. 2. Bybli*, Boeck, 1870. 



('rust. amphip. boreal. & aret. 



62. Byblis abyssi. Gr. O. Sårs, n. sp. 



(Pl. XVI. fig. ii). 

 Byblis abyssi, Gr. 0. Sårs. ('rust. & Pycnogonida nova etc. No. 33. 



Speciflc Charaeter. — Body slender and elongate, 

 with back arched and comparatively small, roimded epi- 

 mera. Head not verv elongate. at extremity obliquely 

 truncate, with lateral corners rounded off. Lateral plates 

 of 3rd abdominal segment evenly rounded posteriorly; 4th 

 and last segments having above a compressed hump. No 

 eves. First pair of antenna' about equalling half the bod] 

 in length. with Ist joint of peduncle short and tliick. 

 2nd considerably longer and more slender, flagellum more 

 than twice as long as peduncle; 2nd pair equalling whole 

 Length of body. with all the joints of peduncle visible ex- 

 ternally, 3rd joint projecting anteriorly far beyond point 

 ol' head. the 2 last about uniform in length, — flagellum larger 

 than peduncle, aud beset with long. delicate bristles. Legs 

 exhibiting usual structure. Basal joint on last pair ex- 

 panded posteriorly to a broad bristle-beset lobe. jutting 

 out beyond 3rd joint; last joint slender. linear. Caudal 

 stvlets uniform in appearance, and diminishing in length 

 posteriorly. Telson small, truncate at extremity. and with 

 a short incision. Colour whitish. Length 12""". 



Findesteder. Stat. 31. 124. 200. 



Den norske Nordhavsexpedition. G. O. Sårs: Crustacea. 



Locality. 



Stats. 31, 124. 200. 



26 



