1. IVebalia bipes (Fabr). 



(Tab. I, Fig. 1—3; Tab. II ug III; Tab. IV, Fig. 1—8; Tab. V). 



Cancer hipes, Fabricius, Fauna Gronlandica n. 223. 



Cancer ganiarellus bipes, Herbst, Geschichte der Krabben etc. 



II, ni. 



Xehnlia Herhsfii, Leach, Zool. miscell. I, p. 100. 



— — Milne— Edwards. Hist. nat. des Crustacea. Ill, 



p. 356. 

 Nehalia Montagu!, Tliompson, Zool. Kesearches. 

 Nehalia hipes, Krøyer, Groulands Amphipoder, p. 91. 



— — Naturh. Tidsskr. 2den Række, II, p. 430. 



— — Gaimard's Voyage en Scandinavie, PI. 40, Fig. 2, 



a — X. 



— — Baird, British Entomostraca. 



Nehalia Geoff'royi, Milne — Edwards, Ann. d. sc. nat. 1828. 



— — M— Edwards, Hist. nat. d. Orustacés. III. 



— — Clans, Zeitschr. f.wissensch. Zoologie, XXII, 



p. 323, Tab. XXV. 



— — Glaus, Untersuchungen zur Erforschuug der 



genealogischen Grundlage des Crustaceen- 



systeins, p. 24, Tab. XV, Fig. 4—6. 



Nehalia bipcs, A. S. Packard, A JMonograph of the Phyllopod 



Crustacea of North America, with Remarks on 



the Order Phyllocarida, p. 432, PI. XXXVI— 



XXXVII. 



Artscharacter. — Legemet af temmelig slank 

 Form, navnlig bos Hannen. Eygskjoldet af betyde- 

 lig Størrelse, seet fra Siden lios Hnnnen af oval, 

 bos Hannen af elliptisk Form, omtrent lige bøit 

 fortil som bagtil. Pandepladen jevnt tilrnndet i 

 Enden, uden terminal Spina. Øinene vel ndyiklede, 

 noget sammentrykte, med den ydre Del noget ud- 

 videt og skjævt afrundet, Pigmentet af mørkerød 

 Farve. De ovre Følere bos Hunnen omtrent af For- 

 kroppens Længde, med Svoben omtrent saa lang som 

 Skaftet og det lamelleformige Vedbæng ovalt; bos 

 Hannen betydelig stærkere forlængede, med Svøben 

 mere end dobbelt saa lang som Skaftet og det 

 lamelleformige Vedbæng smalt elliptiskt. De nedre 

 Følere hos Hunnen Va Gang til aaa lange som de 

 øvre; bos Hannen af bele Legemets Længde, med 

 Svøben overordentlig tynd og forlænget. Branchial- 

 foddernes Epipodit meget stor, elliptisk, med den 

 nedre Lap af samme Størrelse som den ovre. Iste 

 Par Svømmefodder med Yderkanten af den ydre 

 Gren tandet i hele sin Længde. Halegrenene bos 

 Hunnen omtrent saa lange som de 2 sidste Bagkrops- 

 segmenter tilsammen, bos Hannen af mere end den 

 dobbelte Længde. Farven varierende fra lyst bvid- 

 gult til intensiv rodbrun. Legemets Længde indtil 

 12 mm. 



Bemærkninger. — Den middelbavske Form, 

 N. Geoffroyi, M. Edvv., bvoraf jeg bar havt Exem- 

 plarer til Undersøgelse, tagne af min Fader ved 

 Neapel, synes i ingensombelst Henseende at skille 

 sig fra vor nordiske Form, der utvivlsomt er iden- 

 tisk med Fabricius's Art. Det samme er ogsaa Til- 

 fældet med N.Merhsfii Leacb og N. Montagui Thomp- 



- — t^. 0. Sars: Fauna Norvegiæ. 



Nehalia 

 Nehalia 



Nehalia 



Nehalia 



1. Nebalia bipes (Fabr) 



(Pl. I, figs. 1—3; ri. II and III; Pl. IV. figs. 1-8;. Pl. V.). 



Cancer hipes, 0. Fabricius, Fauna GrOnlaudica n. 223. 



Cancer ganiarellus hipes, Herbst, Geschichte der Krabben &c 



II, III. 

 Nehalia Herhsfii, Leach, Zool. miscell. I. p. 100. 



— — Milne-Edwards, Hist. nat. des Crustacés, III. 



p. 356. 

 Montagui, Thompson, Zool. Kesearches. 

 hipes, Kroyer, CTrnnlands Amphipoder, p. 91. 



— Xaturh. Tidsskr. 2 Series, II, p. 436. 



— Gaimard's Voyage en Scandinavie, Pl. 40, fig. 2, 

 a— x. 



— Baird, British Entomostraca. 

 Geoff'royi, Milne— Edwards, Ann. de sc. nat. 1828. 



JI-Edwards, Hist. nat. d. Crustacés, III. 

 Claus, Zeitschr. f. wissensch. Zoologie, XXII, 

 p. 323, Pl. XXV. 



Claus, Untersuchungen zur Erforschung der 

 genealogischen Grundlage des Crustaceen- 

 systems, p. 24, Pl. XV, fig. 4—6. 

 hipes, A. S. Packard, A Monograph of the Phyllopod 

 Crustacea of North America, with Remarks on 

 the order Phyllocarida p. 432, PI. XXXVI- 

 XXXVII. 



Specific characters. — Body of rather slender 

 form, especiallj^ in the male. Carapace of consider- 

 able size, viewed laterally in female oval, in male 

 ' elliptical in form, about the same height in front 

 as behind. Frontal plate evenly rounded at the 

 extremity, without terminal spina. Eyes well deve- 

 loped, somewhat compressed, with the outer part 

 somewhat expanded and obliquely rounded, pigment 

 of dark red colour. Superior antennæ in female 

 about the length of tlie anterior division of the 

 l)ody, with the flagellum about as long as the pe- 

 duncle and the lamellar appendage oval; in male 

 considerably more prolonged, with the flagellum 

 more than twice as long as the peduncle, and the 

 lamelliform appendage narrow elliptical. Inferior 

 antennæ in female half again as long as the superior 

 ones; in male as long as the entire body, with the 

 flagellum extremely thin and prolonged. Epipodite 

 of the branchial legs very large, elliptic, with the 

 lower lobe of same size as the upper one. First 

 pair of swimming legs dentated along the entire 

 length of tbe exteroir edge of the outer ramus. Caudal 

 rami in female about as long as tbe 2 last seg- 

 ments of tbe posterior division of the body together; 

 in male more than twice tbe length. Colour vary- 

 ing from light wbity -yellow to intense red-brown. 

 Length of the body reaching 12 m. m. 



Remarks. — The Mediterranean form, X. Geoffroyi, 

 M.Edw. of which I have bad specimens for investi- 

 gation, collected by my father off Naples, appears 

 in no respect, whatever, to distinguish itself from 

 our northern form, which is, undoubtedlj', identical 

 with Fabricius's species. Tbe same is also the case 

 with N. HerhsUl Leach, and JS. Montagu/ Tlnjmpson. 



