Beskrivelse af Slsegter og Arter. 
Description of Genera and Species. 
Fain. 1. Pycnogonidse. 
Familieeharacter. Saxlemmer og Folere manglende 
hos begge Kjon j fuldt udvoxet Tilstand. Falske Fodder 
kun tilstede hos Hannen. 
Bemoarkninger. Til denne Familie regner jeg kun 
2 bekjendte Slmgter, nemlig Pycnocjonim og Phoxichilus, 
der begge stemmer overens i ovenstaaende Characterer, om 
de end i andre Henseender viser ikke ubetydelige Forskjel- 
ligheder. Shegteme Hannonia Hoek og Ehynchothorax 
Costa, som af andre Forskere henregnes til denne Familie, 
tror jeg rettest bor indordnes under 2 andre Familier, den 
forste under Familien Pallenidce, den sidste under Familien 
Pasithoidw. 
Gen. Pycnogonnm, Briinnich (1764). 
Slsegtscharacter. Legomet underssetsigt bygget. med 
haarde, knudrede Integnmenter, kun svagt haarbesat. Sna- 
belen mere eller mindre lige fortilstrakt, glat. Gieknuden 
stump. De falske Fodder meget. smaa, 9-leddede, med 
simple Torner og endende med en kraftig Klo. Gang- 
fodderne forholdsvis korte og robuste, med Tarsalleddet 
meget kort, Endekloen kraftigt udviklet, som oftest uden 
Bikloer. Kun et enkelt Par af Kjonsaabninger lios begge 
Kjon, beliggende paa sidste Fodpars 2det Hofteled. .Egge- 
massen enkelt, kageformig. 
Bemserkninger. Af denne Slsegt, den forst be- 
skrevne inden nservairencle Dyrclasse, kjendte man indtil 
for nyligt kun en eneste Art, P. littorale Strom. I Dohrn’s 
Yserk over de i Golfen ved Neapel forekommende Pycno- 
Fam. 1. Pycnogonidse. 
Family Character. — Ckelifori and palpi wanting 
in adults of both sexes. False legs present only in male. 
Remarks. — As of this family I class but 2 known 
genera, viz., Pycnogonum and Phoxichilus, both agreeing in 
the fore-mentioned characters, though in other respects 
exhibiting by no means inconsiderable points of difference. 
The genera Hannonia Hoek and Phynchothorax Costa, 
which other naturalists refer to this family, should, in my 
judgment, rather be placed under 2 different families, the 
former under the family Pallenidce and the latter under 
the family Pasithoidw. 
Gen. Pycnogonum, Briinnich (1764). 
Generic Character. — Body squareset, having hard, 
rough integuments, sparingly furnished with hair. Proboscis 
extending more or less straight forwards, smooth. Oculi- 
feious tubercle obtuse. The false legs very small, nine- 
jointed, with simple spines, and terminating in a powerful 
claw. Ambulatory legs comparatively short and robust, 
with the tarsus very short, terminal claw powerfully devel- 
oped, as a rule without auxiliary claws. A single pair 
only of generative openings in either sex, on the 2nd coxal 
joint of the last pair of legs. Egg-mass simple, cake-shaped. 
Remarks. — Of this genus, the one first described 
belonging to the present class of animals, was known till 
of late but a single species, P. littorale Strom. In Dohrn’s 
work however on the Pycnogonidea (Pantopoda) occurring 
