Legemet er (se Pl. I. fig. 1 ) af ualmindelig under- 

 s;rtsiu: og samraentrængt Funn. samt ved vel markerede 

 Suturer delt i li paa hinanden følgende Afsnit eller Seg- 

 menter, hvoraf «let forreste forestiller Snabelen, det bager- 

 ste Halesegmentet. Ethvert at' de 4 midterste Segmenter 

 udvider sig til Siderhe til en kurt og tyk, i Enden afkuttet 

 Fortsats, hvortil Gangfødderne er fæstede. Disse laterale 

 Fortsatser er tæt sammentrængte og kun skilte ved yderst 

 smale, spaltformige Mellemrum, hvorfor Legemets Midtparti 

 antager en temmelig bred, oval. noget nedtrykt Form. 

 Det bagerste Par af Sidefortsatserne er betydelig kortere 

 end de øvrir/e og kun skilte bagtil ved et smalt Indsnit, 

 fra hvis Bund Halesegmentet udgaar. Det forreste af de 

 egentlige Kropssegmenter, det saakaldte Hovedsegment, der 

 egentlig maa opfattes som fremkommet ved en Sammen- 

 smeltning af tiere Segmenter, er som sædvanlig det største 

 og omtrent dobbelt saa bredt som langt. Dog er det for- 

 reste Parti, idler Pandedelen, hei- langtfra saa udviklet 

 som hos de fleste øvrige Pycnogonideer og udi n nogen 

 egentlig Hals. Det viser i Enden en kraveformig Fortyk- 

 kelse. der ligesom omfatter Roden af Snabelen ise ogsaa 

 Fig. 1 a og 1 f), og har oventil, i nogen Atstand fra For- 

 kanten en temmelig stærkt fremspringende, men i Enden 

 stumpt afrundet Knude (Øieknuden). Paa den ovre Flade 

 af denne Knude sees de 4 lindseformige Oorneæ, der med 

 sit underiiggende Pigment fremstiller Dyrets Synsorganer. 

 Disse Corneæ er hos nærværende Art meget smaa og vidt 

 adskilte, samt ordnede 2 og 2 paa hver Side afMidtlinien 

 (se Fig. 1 b). Bai; Øieknuden tindes paa Legemets Etygside 

 langs Midtlinien en Række af 5 niere eller mindre lene. 

 stumpt koniske Fremspring (se Fig. 1 a), hvoraf de 2 til- 

 hører Hovedsegmentet. ethvert af de øvrige et særskilt 

 Segment; de 8 midterste at disse Fremspring er altid de 

 største. Desuden lindes ved Enden af Legemets Sidefort- 

 satser, ligeledes paa Rygsiden, en mere eller mindre tyde- 

 lig stump Knude. Halesegmentet (se Fig. le) er horizon- 

 talt stillet og næsten af spadedannet Form. stærkt indkne- 

 bet ved Basis og successivt udvidet mod Enden, der er 

 næsten tvært afkuttet eller med en neppe mærkelig Vinkel 

 i Midten; dets Længde er omtrent lin de 2 foregaaende 

 Segmenter tilsammen. 



Snabelen ise Fig. 1.1a og 1 f) udgaar i hoiizontal 

 Retning fra Enden af Hovedsegmentet, dog saaledes, at 

 dens Endeparti er svagt nedbøiet (se Fig. la). Den er 

 omtrent halvt saa lang sum det øvrige Legeme og ved 

 Basis neppe meget smalere end den forreste Del af Hoved- 

 segmentet. Af Form er den udpræget konisk og temmelig 

 stærkt afsmalnende mod Enden, med det ydre Parti smalt 

 udtrukket og af cylindrisk Form. Ovenfra eller nedenfra 

 seet viser Snabelens Sidecontourer en sva'_i dobbelt [nd- 

 bugtning, som ogsaa ei- bemærkel af Wilson. Paa Spidsen 

 af Snabelen ligger Mundaabningen ise Fig. 1 f), som har 

 den sædvanlige trekantede Form. men mangler tydeligt ud- 

 viklede Læbeplader. 



Den norske Nordhav: G O. Sårs: Pyciiogonide 



The body (see Pl. I. fig. 1) is remarkably thickset 

 and compact in form. and divided by well-marked sutures 

 into consecutive parts, or segments, the foremost of 

 which represents the proboscis, the hindmosl the eaudal 

 segment. Each of the 4 median segments expand at i he 

 sides, forming a short and thick truncate process, to which 

 the ambulatory legs are affixed. These lateral processes 

 lie crowded together, with but exceedingly narrow, fissure- 

 like intervals between; aud hence the media] part ol' the 

 body assumes a rather broad, oval. somewhat depressed 

 form. The posterior pair ol' lateral proeesses are consid- 

 erabh shorter than the rest. and separated behind by only 

 a narrow ineision. from the bottom of which issues the 

 caudal segment. The most anterior of the true segments of 

 the body. the so-called cephalie segment, which. strictly. must 

 be regarded as a fusion together, sotospeak, of several seg- 

 ments, is as usual the largest, and abont twice as broad 

 as Long. Meanwhile the foremost or frontal part is iii this 

 animal lar from being so developed as in most other Pyc- 

 nogonids. and is also without any neck proper. It exhibits 

 the extremity a collar-shaped inspissation, encompassing, as it 

 were. the base of the proboscis (see too fig. 1 a and fig. 



1 f.), and having above, at some distance from the front 

 margin, a ratler abruptlj projecting, but at the extremity 

 rounded knob (the oculiferous tubercle). On the upper 

 surface of this protuberance ave seen the 4 lenticular 

 corneæ, which. along with the underlying pigment, constitute 

 the visual organs of the animal. In the present speeies. 

 these corneæ are exceedingly small and wide apart and 

 arranged, 2 and 2 together, on each side of the medial line (see 

 tig. lb). Behind the oculiferous tubercle, occurs on the dorsal 

 side of the body. along the medial line. a series of 5 more 

 or less elevated, obtuse conical projections (see fig:. 1 a). 



2 of which belong to the cephalie segment, each of the 

 others to a separate segment; the 3 middlemost of these 

 projections are invariably the largest. Moreover, at the 

 extremity of the lateral processes of the body. likewise on 

 the dorsal side. we observe a more oi' less distinct obtuse 

 protuberance. The eaudal segment (see fig-. 1 c). placed 

 horizontally, is almosl spatulate in form. very much 

 instricted at the base. and expands successivelj tpwards the 

 extremity, which is nearly truncate or with a well-nigh im- 

 perceptible angle in the middle; its length about equals 

 that of the 2 preceding segments tåken together. 



The proboscis (see fig. 1. 1 a and 1 f) issues. with 

 a horizontal direction, from the extremity of the cephalie 

 segment, though in such manner as to give its terminal 

 part a slight downward bend (see fig. 1 a). Tt measures 

 about half the length of the rest of the body. and is at 

 the base very little il' at all slenderer than the foremost 

 pait of the cephalie segment. It has a marked conical 

 form and tapers rather abniptly towards the extremity. 

 with the outer portion slenderly produced and cylindrical 

 in form. Viewed from above or from below, the lateral 

 contours of jthe proboscis exhibit a faint twofold curvature, 

 also uoticed by Wilson. At the extremity of the probos- 

 cis lies the buccal orifice (see fig. 1 f), which has the 



