39 



Pallene hispida, Stimpson, Invertebrata of Grand Manan, 



p. 37 (adult). 

 Pseudopallene hispida, Wilson, Synopsis of the Pycnogonida 



of New England, p. 10, Pl. III, rig. 1 a— c (adult). 



Idem, Rep. U. 8. Comm. Fish and 



Fisheries VI, p. 47S, Pl. 11, fig. 9. 

 Pseudopallene discoidea, Wilson, Synopsis ol' the Pycnogonida 



of New England, p. 12, Pl. Ill, rig. 3, a— c (jun.). 



Idem, Rep. U. 8. Comm. Fish and 



Fisheries VI, p. 479, Pl. II, fig. lo. 

 Pseudopallene intermedia. Hausen, Kara Havets Pycnogoni- 



der, p. 21, Tal,. XIX. fig. 2 a— 1 (adidt. & jun.). 

 Pseudopallene ciradaris, (1. < >. Sårs. Pyenog. borealia et 



arctica, No. 9. 



Artscharacteristik. Legemet særdeles plumpt og un- 

 dersætsigt, med Sidefortsatserne næsten sammenstødende ; de 

 2 midterste Kropssegmenter oventil med en Længderad afhøie 

 pigformige Fortsatser. Hovedsegmentet neppe saa langt som 

 de 3 følgende tilsammen, Halsen særdeles kort, næsten obsolet. 

 Saxlemmerne forholdsvis korte. Skaftet cylindriskt, med 

 stærke pigformige Fortsatser ved Enden, Saxen neppe læn- 

 gere end Skaftet, triangulær, den ubevægelige Finger med 

 en enkelt afrundet Knude i Midten af Inderkanten; den 

 bevægelige Finger glat. De falske Fodder forholdsvis korte, 

 de ydre Led besatte med simple, uregelmæssigt ordnede 

 Turner i Inderkanten Gangfødderne korte og robuste, 

 neppe mere end dobbelt saa lange som Legemet, og forsy- 

 nede, især langs Ydersiden, med stærke pigformige Fort- 

 satser, fint eilierede i Kanterne og bærende en stiv Børste 

 i Spidsen ; Fodleddet stærkt krummet og bevæbnet i Inder- 

 kanten med omkring 8 — 10 stærke Torner ; Endekloen kor- 

 tere end Fodleddet. Farven gulbrun. Legemets Længde 



h 



'; Spandvidde 19""". 



Bemærkninger. Der kan etter min Mening ingen- 

 somhelst Tvivl være om, at Goodsir's Pallene circidaris er 

 identisk med Krøyers P discoidea, og, da Goodsir's Afhand- 

 ling er publiceret 3 Aar tidligere end Krøyer's, maa selv- 

 følgelig det af førstnævnte Forsker foreslaaede Navn, circu- 

 laris, bibeholdes fur Arten. Dr. Hansen har først paavist, 

 at de 2 Krøyerske Arter, P. intermedia og discoidea hører 

 sammen, den første repræsenterende fuldt udviklede, den 

 anden yngre Individer; noget, hvis Rigtighed jeg ogsan. ved 

 egne Iagttagelser kan bekræfte. Den amerikanske Form 

 P. hispida. synes heller ikke i nogen Henseende at skille 

 sig fra fuldvoxne Exemplarer af nærværende Art, ligesaalidt 

 som den af Wilson som Pseudopallene discoidea beskrevne 

 Form lader sig adskille fra yngre Individer (= Pallene dis- 

 coidea, Kniver). 



Beskrivelse. Legemets Længde er Ims fuldt udvik- 

 lede Individer omtrent o 1 ,, ', med en Spandvidde at 19'°'". 



Nogen bemærkelig Forskjel i Størrelsen hos de 2 Kjøn tin- 

 des ikke. 



Formen er (se Pl. 111, Fig. 3) ualmindelig kort og 

 undersætsig, i hvilken Henseende denne Art noget minder 

 om Arterne af Slægten Annuothea, Lcaeh. Selve Kroppen 



Pallene hispida, Stimpson, Invertebrata of Grand .Manan, 



p. 37 (adult). 

 Pseudopallene hispida, Wilson, Synopsis of the Pycnogonida 



of New England, p. 10, Pl. III. rig. 1 a— e (adult i. 

 Idem, Rep. I". S. Comm. Fish and 



Fisheries VI. p. 478, Pl. II. rig. 9. 

 Pseudopallene discoidea, Wilson. Synopsis of the Pycnogonida 



of New England p. 12, Pl. III, tig. 3, a— C (jun.). 



— Idem, Rep. U. S. ( !omm. Fish and 



Fisheries VI, p. 479, Pl. II. tig. 10. 

 Pseiidopallene intermedia, Hansen. Kara Havets Pycnogoni- 



der, p. 21, Tab. XIX, fig. 2 a— 1 (adult & jun). 

 Pseudopallene circidaris, G. O. Sårs. Pyenog. borealia et 



arctica, No. 9. 



Specific Characters. Body exeeedingly clumsy and 

 thickset, with lateral processes well-nigh contiguous; the 2 

 median segments of the body above with a longitudinal 

 series of prominent spiniform projections. Cephalic segment 

 hardly as long as the 3 succeeding ones tåken together, 

 neck extremely short, almost absent. Chelifori eompara- 

 tively short, scape cylindric with strong spiniform projec- 

 tions at the extremity, chela hardly longer than scape, 

 triangular, immobile finger with a single rounded protube- 

 rance at the middle of the inner edge; mobile ringer 

 smooth. False legs comparatively short, outer joints 

 besct with plaiu, irregularly disposed spines on the inner 

 margin. Ambulatory legs short and robust, scarcely more 

 than twice as long as body, and furnished, especially 

 along the outer side, with strong spiniform projections de- 

 licately eiliated at the edges, and bearing a stiff bristle at 

 tkepoint; propodal joint greatly curved, and armed on the 

 inner edge with about 8 — -10 strong spines; terminal claw 

 shorter than propodal joint. Colour a yellowish brown. 

 Length of body 3 1 //""; extent 19 mm . 



Remarks. ln my opinion, there can not be the 

 slightest doubt that Goodsir's Fatlene circularis is iden- 

 tical with Krøyers P. discoidea, and as Goodsirs Me- 

 moir appeared 3 years previous to KroyerV, the name 

 circularis proposed by the former naturalist, must, ' as a 

 matter of course, be retained for the species. Dr. Hansen 

 was tlie first to point out that the 2 Krøyer species, P. in- 

 termedia and P. discoidea are the same, the former repre- 

 senting rally developed the latter immature individuals — 

 a fact borne out by my own observations. The North 

 American form, P. hispida, does not seem to differ either 

 from adult specimens of the present species, and just as little 

 does the form described by Wilson under the name ol' Pseudo- 

 pallene discoidea permit itself to be distinguished from younger 

 specimens i= Pallene discoidea, Krøyer). 



Description. The length oi' the body in lullv deve- 

 loped specimens is about 3 1 /"", the extent about 19'"'". 

 Any appreciable difference in size between the 2 sexe- can 

 not be detected. 



The form (see Pl. 111, rig. 3) is remarkably short and 

 thickset, in which respect this species calls somewhat to 

 mind the species of the genus Ammothea, Leach. The body 



