138 
42. Colossendeis proboscidea (Sab.) 
(PI. XV, Fig. 1, a— d). 
Phoxichilus proboscideus, Sabine, Suppl. to the Append, of 
Capt. Parry’s Voyage, p. COXXVI. 
Colossendeis borealis, Jarzynsky, Pram. Cat. Pycnogon., 
Ann. de la Societe des Naturalistes de St. Petersbourg. 
Colossendeis proboscidea, G. O. Sars, Prodrom. descript. 
Crust, et Pycnog., etc. p. 368. 
Anomorhynchus Smithii, Miers, Ann. Mag. Nat. Hist. 1881, 
p. 50, PI. VII, Fig. 6-8. 
Colossendeis proboscidea, Hoek, Pycnog. Wil. Brarents, 1. c. 
p. 22, PI. II, Fig. 41—42. 
Colossendeis gigantea, Struxberg, Vega-Expeditionens vetensk. 
iakttagelser, Bd. I, p. 708. 
Colossendeis proboscidea, Hansen, Karahavets Pycnogonider, 
p. 20. 
— — G. 0. Sars, Pycnogonidea borealia 
& arctica, No. 42. 
Artscharaeter. Kroppen kort og undersfetsig, allang 
oval, bredest paa Midten, med tset sammentrangte Side- 
fortsatser. Pandedelen triangulser, neppe bredere end 
Kroppen paa Midten. Halesegmentet meget smalt, cylin- 
driskt, nedadkrummet. Snabelen af enorm Storrelse, mere 
end dobbelt saa lang og i sit ydre Parti naesten dobbelt 
saa tyk som Kroppen, noget buet og successivt udvidet 
mod Enden, nsesten kolleformig. 0ieknuden lige opad- 
rettet, konisk tilspidset. Fdlernes 3 ydre Led successivt 
aftaigende i Stdrrelse og tilsammen lsengere end 7de Led. 
De falske Fodder, lige udstrakte, laengere end Legemet, 
4de Led kortere end 6te. Gangfadderne forholdsvis robnste, 
omtrent dobbelt saa lange som Legemet, Tai'salleddet 
betydelig lrengere og tvkkere end Fodleddet, Endekloen 
kortere end dette sidste Led. Farven gulrod. Legemets 
Laengde 50"™, Spandvidde 225"'“. 
/ 
Bemserkninger. Denne gigantiske Form, der danner 
Typen for Slsegten. skiller sig fra alle de Ovrige bekjendte 
Arter ved den ualmindelig korte og sammentrangte Krops- 
form og ved Snabelens excessive Stprrelse og eiendommelige 
kolledannede Form. Ogsaa hvad Fodderne angaar har den 
et ubetinget mere robust Prseg end de ovrige Arter. 
Beskrivelse. Det foreliggende Exemplar, der synes 
at rare en fuldt udviklet Hun, liar en Lsengde fra Spidsen 
af Snabelen til Enden af Halesegmentet af fulde 50"™, og 
en Spandvidde rnellem de udstrakte Gangfpdder af ikke 
mindre end 225"™. Den er saaledes ubetinget den stprste 
af alle vore nordiske Pycnogonideer. 
Formen maa’ (se PI. XV, Fig. 1) idetheletaget siges 
at rare temmelig robust, navnlig hvad selve Kroppen an- 
gaar. Denne sidste er (se ogsaa Fig. 1 a, 1 b) af aflang 
Form, med jevnt convex Rygside og noget affladet Bug- 
side, samt uden det mindste Spor af nogen Segmentation. 
Sidefortsatserne, der er kortere end Kroppens Brede paa 
Midten, er saa t<x>t sammentrsengte, at der knapt er nogen 
bemserkelige Mellemrum rnellem dem. og den centrale Del 
42. Colossendeis proboscidea (Sab.) 
(PL XV, fig. 1, a— d). 
Phoxichilus proboscideus, Sabine, Suppl. to the Append, of 
Capt. Parry’s Voyage, p. CCXXVI. 
Colossendeis borealis, Jarzynsky, Pram. Cat. Pycnogon. 
Ann. de la Societe des Naturalistes de St. Petersbourg. 
Colossendeis proboscidea, G. 0. Sars, Prodrom. descript. 
Crust, et Pycnogon. &c. p. 368. 
Anomorhynchus Smithii, Miers, Ann. Mag. Nat. Hist. 1881. 
p. 50, PI. VII, figs. 6 — 8. 
Colossendeis proboscidea, Hoek, Pycnog. Wil. Brarents, 1. c. 
. p. 22, PI. II, figs. 41—42. 
Colossendeis gigantea, Stuxberg, Vega-Expeditionens Vetensk. 
iakttagelser. Bd. I, p. 708. 
Colossendeis proboscidea, Hansen, Karahavets Pycnogonider, 
p. 20. 
— — G. O. Sars, Pycnogonidea borealia 
& arctica, No. 42. 
Specific Characters. Trunk short and stout, oblongo- 
oval, broadest at the middle, with closely crowded lateral 
processes. Frontal part triangular, scarcely broader than 
the trunk at the middle. Caudal segment very narrow 
cylindrical, bent downwards. Proboscis of enormous size, 
more than twice as long and in its outer part almost 
twice as thick as the trunk, somewhat arcuate, gradually 
expanded towards the extremity, almost claviform. Ocular 
tubercle directed straight upwards, conically pointed. The 
3 outer joints of the palpi diminishing successively in 
size, and together longer than the 7th joint. False legs, 
straightly extended, longer than the body, 4th joint shorter 
than the 6th one. Ambulatory legs relatively robust, about 
twice as long as the body, tarsal joint considerably longer 
and thicker than the propodal joint, terminal claw shorter 
than that last-named joint. Colour yellow-red. Length of 
the body 50"”". Extent 225™"'. 
Remarks. This gigantic form, which forms the type 
of the genus, distinguishes itself from all the other known 
species, by its uncommonly short and compact trunk, and 
by the excessive size of the proboscis and its peculiar 
clavate form. Also in respect of the legs it has a dis- 
tinctly more robust character than the other species. 
Description. The specimen before us, which appears 
to be a fully developed female, has a length from the 
point of the proboscis to the extremity of the caudal seg- 
ment, of quite 50"™ and an extent between the extended 
ambulatory legs, of not less than 225™’". It is, thus, 
indubitably the largest of all our northern Pycnogonids. 
The form (see PI. XV, fig. 1) jmust ho said to be, 
on the whole, pretty robust, especially as regards the 
trunk. This last is (see also figs. 1 a, 1 b) oblongo-oval 
in form, with an even convex dorsal side and somewhat 
flattened ventral side, and without the least trace of seg- 
mentation. The lateral processes, which are shorter than 
the breadth of the trunk at the middle, are so closely 
crowded, that there is scarcely any noticeable interval 
i 
