94 



erholdtes fra et Dyb af 263 Favne. 

 hører den kolde Åren. 



Begge Stationer til- 



Artens for Tiden bekjendte Udbredningsfelt strækker 

 sig saaledes fra den Gode til den 71de Bredegrad og fra 

 5° østlig Længde til 10° vestlig Længde. 



19. Anceus robustus, G. 0. Sårs. n. sp. 



(Pl. VIII. Fig. 25—27). 

 Inceua robustus, <-. ( •. Sårs. Crustacea et Pycnogonida nova etc, No. (i. 



Artscharacteristik. cf Legemet af særdeles kort og 

 robust Form. med Breden betydelig storre end '/.; af Læng- 

 den. Integumeiiterne overalt ru af smaa Pigge, men uden 

 tydelig Haarbesætning. Hovedet særdeles stort og bredt. 

 forti] afstumpet, Siderne convexe. Næstsidste Forkropsseg- 

 ment oventil forsynet med en smal Længdefure. hvorfra en 

 i Enden tvedelt Tværfure strækker sig til hver Side. Bag- 

 kroppen med tandede. lidet fremspringende Epimerer. Øi- 

 nene smaa, men tydelige. Kindbakkerne uden nogen tydelig 

 Tand i den ydre Kant. Fodderne kraftigt byggede med 

 stærke tandformige Fremspring. Bagkropslemmerne med 

 borstelose Endeplader. Deri midterste Haleplade hag Basis 

 pludselig stærkt indknebet. med den ydre Del sa^rdeles smal. 

 konisk. Enden tilspidset og forsynet med 2 divergerende 

 Børster. Farven hviagtig med enkelte utydelige gulagtige 

 Pigmentpletter. Længden 7""". 



Larverne (Praniza) af sædvanlig Form. med store morkt 

 purpurfarvede Øine. og gulrød Pigmentermg. 



Tindesteder. Stat. 280. 359. 



Bemærkninger. Fra foregaaende Art er denne let 

 kjendelig ved sin ualmindelig plumpe Kropsform, de kun 

 med meget sparsomme Haar, meu talrige Smaapigge. be- 

 satte Integumenter og ved den midterste Haleplades meget 

 eiendommelige Form. 



Beskrivelse af Hannen. Legemets Form er (se Pl. 

 VIII, Fig. 25) endnu adskilligt plumpere og mere under- 

 sætsig end bos foregaaende Art. med Breden betydelig 

 storre end '/ 3 af Længden. 



Integumeiiterne er temmelig faste og overalt, ogsaa paa 

 de 2 bagre Forkropssegmenter. ru af smaa Pigge, hvori- 

 mod den tætte Haarbesætning, som udmærkede foregaaende 

 Art. her saagodtsom ganske savnes. 



Hovedet er særdeles stort, omtrent dobbelt saa bredt 

 som langt, med Panderanden næsten tvært afskaaret og 

 Sidedelene stærkt convexe. Supraorbitalfortsatserne er ty- 

 delige, men ganske smale og tandede i den ene Kant. 



of Jan Mayen (Stat. 237). where 2 specimens were likewise 

 obtained, from a depth of 263 fathoms. Both Stations lay 

 in the cold area. 



Accordingly. the tract over which the species is at 

 present known to be distrihuted extends from the 63rd to 

 the 7 Ist parallel of latitude, and from long. 5° E. to long. 

 Ul" W. 



19. Anceus robustus, G. 0. Sårs. n. sp. 



(Pl. VIII, figs. 23—27). 

 Ancens robustus, (I. 0. Sårs. Crustacea et Pycnogonida nova etc, NTo. (i. 



Speeific Charaeter. -- </ Body remarkably short, and 



robust in form. with the breadth but slightly exceeding om- 

 third oi' the length. Integuments everywhere rough. by 

 reason of minute spikes, but witbout any distinct covering 

 of hair. Head very large and broad. anteriorly obtuse, 

 sides convex. Penultimate pedigerous segment furnished 

 above with a narrow longitudinal sulcus. from which a 

 transverse sulcus. bifurcate at the extremity. protends on 

 either side. Abdomen furnished with dentate. and hut slightly 

 projecting epimera. Eyes small but distinct. Mandibles 

 witbout any distinctly developed tooth on the outer edge. 

 Legs powerful in structure. with strong dentiform projec- 

 tions. Pleopoda with naked terminal plates. Median caudal 

 plate, posterior to the base. abruptly constricted. with the 

 outer portion exceedingly narrow. conie, extremity pointed and 

 furnished with 2 diverging bristles. Colour whitish. with 

 scattered. indistinct patches of yellowish pigment. Length 7""". 



The larvæ (Praniza) normal in form. with large dark 

 purple-coloured eyes. and a yellowish-red pigment. 



Loeality. Stats. 290, 359. 



Bemarks. — From the preceding species, the present 

 may be readily distinguislied by its remarkably clumsy form 

 of body. by the integuments being furnished very sparingly 

 with hair but having numerous minute spikes, and also by 

 the exceedingly peculiar form of the median caudal plate. 



Description of the Female. — The form of the body 

 (see Pl. VIII. fig. 25 1 is much more clumsy and thickset 

 than in the preceding species. with the breadth consider- 

 ably exceeding one-third of the length. 



The integuments are rather firm in consistence. and 

 everywhere, even on the 2 posterior. pedigerous segments, 

 rough from minute spikes, whereas the dense covering of 

 hair that distinguishes the preceding species is well-nigb 

 entirely wanting. 



The head is exceedingly large, about twice as broad 

 as long, with the frontal margin abruptly truncate. and 

 having the lateral parts prominently convex. The supra- 

 orbital projections are distinct. but very small, and deutate 

 along one oi the edges. 



