8 
Pycnogonum Morale, Idem, Nouvelles etudes sur les Pyc- 
nogonides, p. 520. 
n „ Hansen, ..Zoologia Danica 11 Spindeldyr, 
Tab. YII, fig. 23. 
„ „ Hansen, Fortegnelse over de hidtil i de 
Danske Have fundne Pycnogonider. Nat. Tidsskr. 
3 Riekke, B. 14, p. 652. 
„ „ G. 0. Sars, Pycnogonidea borealia & 
arctica, No 1. 
Artseharaeter. Legemet temmelig bredt, noget ned- 
trykt. Paa Rygsiden af hvert Kropssegment et mere oiler 
mindre licit, koniskt Fremspring ; mellein det forreste Frem- 
. spring og 0ieknuden et mindre saadant. Legemets Side- 
fortsatser brede. naesten sanimenstpdende, hver oventil vod 
Enden forsynet med on stump Knude. 0ieknuden afrun- 
det, med forholdsvis meget smaa og vidt adskilte Cornea. 
Snabelen omtrent af Legemets halve Lsengde, stserkt. af- 
smalnende mod Enden, med dot ydre Parti smalt cylin- 
driskt. Halesegmentet spadeformigt udvidet mod Enden, 
Spidsen afkuttet. Gangfpdderne kortere end Legemet, sser- 
deles kraftigt byggede, med rn, kornet Hud; Laarleddet 
og lste Liegled storst, omtrent af ens Lsengde, hvert ved 
Enden oventil gaaende ud i 2 stumpe Fremspring; Tarsal- 
leddet srerdeles kort, trekantet, bredere end Fodleddet, 
oventil Hasten skjult af foregaaende Led; Fodleddet noget 
krummet, neppe atsmalnende mod Enden; Endekloen smr- 
deles kraftig, mere end lialvt saa lang som Fodleddet, 
uden Bikloer. De falske Fodder hos Hannon cylindriske. 
med de 4 ydre Led stern: end de 4 indre, Endekloen 
kraftigt udviklet og krummet i Enden. Farven gullivid 
eller brun. flunnens ssedvanlige Lfengde 1 5™; Spandvidde 
26’"”’; Hannen noget mindre. 
Bemserkninger. Som det vil sees af Synonymien, 
liar denne characteristiske og let kjendelige Form vairet 
observeret og omtalt af saagodtsom alle de Naturforskere, 
der overhovedet har beskjaftiget sig med disse Dyr. Men 
den har, paa Grund af en vis Lighed i den ydre Habitus, 
af Liirne og here senere Forskcre vseret forvexlet med de 
forovrigt vidt forskjellige, til Amphipodemes Orden horende 
Hvallus (Cyamus), og det er herfra at den Linneiske Arts- 
bensevnelse ,.bakenarum“ skriver sig. Arten er egentlig 
forst bloven noiere undersogt og beskrevet af den bekjendte 
danske Naturforsker Krnyer. livem vi overhovedet skylder 
den forste ordentlige Bearbeidelse af Gruppen. I den 
nyere Tid er denne Art bleven gjort til GjenStand for en 
fornyet Undersogelse af Wilson og Hoek, og navnlig har 
den sidste Forsker paavist Acre Eiendommeligheder ved 
dens indre Organisation. 
Beskrivelse. Legemets Lmngde er hos fuldt ud- 
voxede Hunner, regnet fra Spidsen af Snabelen til Enden 
af Halesegmentet, Ssedva.nligvis omkring 15™. med en 
Spandvidde mellem Spidsen af Gangfodderne af circa 26™. 
Hannerne er ialmindelighed noget mindre end Hunnerne, 
men forovrigt af et meget lignende Udseende. 
Pycnogonum Morale, Idem, Nouvelles etudes sur les Pyc- 
nogonides, p. 520. 
„ „ Hansen, “Zoologia Danica” Spindeldyr, 
Tab. YII. fig. 23. 
• ,• ,■ Hansen, Fortegnelse over de hidtil i de 
danske Have fundne Pycnogonider. Nat. Tidsskr. 
3 Riekke, Bd. 14, p. 652. 
>: G. O. Sars, Pycnogonidea borealia & 
arctica, No. 1. 
Specific Character. — Body rather broad and some- 
what depressed. On the dorsal side of each segment of 
the body a more or less elevated conical projection; be- 
tween the foremost projection and the oculiferous tubercle 
one of smaller size. The lateral processes of the body 
broad, well-nigh contiguous, each provided above with an 
obtuse knob. The oculiferous tubercle rounded, with com- 
paratively very small and widely distant come®. The 
proboscis about half the length of the body, rapidly taper- 
ing towards the extremity, and with the outer part slender 
cylindrical. The caudal segment spatulate-expanded towards 
the extremity, tip truncate. Ambulatory legs shorter than 
body, exceedingly powerful, with a rough, granulous skin; 
femoral joint and 1st tibial joint largest, about equal in 
length, each with the extremity above taking the form of 
2 obtuse projections; tarsus remarkably short, [triangular, 
broader than propodus, above almost concealed by the 
preceding joints; propodus slightly curved, scarcely at all 
tapering towards the extremity; terminal claw uncommonly 
powerful, more than half as long as prododus, without 
auxiliary claw. The false legs in the male cylindric, hav- 
ing the 4 outer joints larger than the 4 inner, terminal 
claw powerfully developed and curving towards the extrem- 
ity. Colour yellowish-white or brown. Ordinary length 
of female 15™; extent 26™; male a trifle smaller. 
Remarks. — As will appear from the synonomy, this 
characteristic and easily recognisable form has been ob- 
served and mentioned by well-nigh all naturalists that have 
had their attention anyway drawn to these animals. But 
from a certain resemblance in the outer habitus, it has 
by Linne and several later authors been confounded with 
the whale-louse (Cyamus), belonging to the order Amphi- 
poda; hence the Linnean specific appellation “balm- 
narum.” The species was first carefully examined and 
described by the well-known Danish naturalist K rover, 
to whom indeed we are also indebted for the first system- 
atic. working-up of the group. Of late this species has 
been made the subject of renewed investigation, by Wilson 
and Hoek, the latter naturalist more especially having 
pointed out divers peculiarities distinguishing its inner or- 
ganization. 
Description. — The length of the body in full-grown 
females, taken from the tip of the proboscis to the extrem- 
ity of the caudal segment, measures as a rule close upen 
15™, the extent between the points of the ambulatory 
legs reaching 26™. The males are generally somewhat 
smaller than the females, but for the rest of very similar 
appearance. 
