133 



tydelig Størrelse, ikke omgivhe at' nogen tælles Mem- 

 bran. 



Bemærkninger. Denne Slægt staar vistnok meget 

 nær foregaaende, men synes mig; dog at burde opretholdes, 

 da flere Arter i den nyere Tid er opdagede, der viser 

 lignende Forskjellign eder fra Slægten Eurycyde som den 

 typiske Art. Af disse Forskjelligheder kan fremhæves den 

 smale forlængede Form af Legemet. Snabelens enorme 

 TJdvikling og Mangel af noget tydeligt Skaft. Saxlemmer- 

 nes Structur, endelig de falske Fadders Bevæbning og 

 Halesegmentets Form. Den af Dohrn opstillede Slægt 

 Barana synes i visse Henseender at komme nærværende 

 Type endnu nærmere end foregaaende Slægt, og navnlig 

 viser den ene af Arterne, B. castelli, i sin ydre Habitus en 

 umiskjendelig Lighed med Arterne af Slægten Ascorhyn- 

 chus, medens den anden Art, B. arenosa i denne Hen- 

 seende mere minder om Slægten Eurycyde. Der er imid- 

 lertid visse Forhold, der synes at skille begge disse Arter 

 saavel fra Slægten Eurycyde som Ascorhynchus og som 

 taler imod at forene dem med nogen af disse Slægter. 

 Formlen den nedenfor nærmere beskrevne Art hører herhen 

 3 af Hoek fra Challenger Expeditionen beskrevne Arter, 

 og en af Bohm under Benævnelsen Gnamptorhynchus ramipes 

 opført Form fra Japan henføres af Hoek ligeledes til denne 

 Slægt. Arternes A.ntal bliver saaledes for Tiden ikke 

 mindre end 5 ialt. 



41. Ascorhynchus abyssi, G. 0. Sårs. 



(Pl. XIV, Fig. -1. a— t). 



Ascorhynchus abyssi, G. 0. Sårs, Prodromus descript. Crnst. 



å Pycnog. etc, No. 8. 



G. O. Sårs, Pycnogonidea borealia & 



a re tica No. 41. 



Artscharacter. Legemet smalt cylindriskt, med for- 

 holdsvis korte og vidt adskilte Sidefortsatser. De 3 for- 

 reste Segmenter med den bagre Del ophøiet og gaaende 

 ud i en opadrettet tilspidset Fortsats; en lignende men 

 noget mindre Fortsats ved Enden af enhver af Sidefort- 

 satserne. Hovedsegmentet noget længere end de 2 følgende 

 Segmenter tilsammen; Pandedelen successivt udvidet mod 

 Enden, som er tvært afkuttet. Haleseginentet meget smalt, 

 noget nedadkrummet. Øieknuden helt fortil, stumpt af- 

 rundet i Enden, med et kort tandformigt Fremspring til 

 hver Side og uden Spor af Synselementer; Snabelen af 

 særdeles betydelig Størrelse, saa lang som de 3 forreste 

 Segmenter tilsammen, stærkt fortykket paa Midten, næsten 

 pæreformig og omslaaet under Bugen. Saxlemmerne om- 

 trent halvt saa lange som Hovedsegmentet, Skaftet enled- 

 det, Haanden hos fuldt udviklede Individer særdeles liden, 

 triangulær, med en kort tandet Knude som Rudiment af 



number and of considerable size, not enveloped by any 

 common membrane. 



Remarks. This genus certainly approximates to the 

 preceding one pretty closely, but it appears to me, Innv- 

 ever, that it should be maintained, as several species have 

 been discovered in later years which exhibit similar diver- 

 gencies fnnn the genus Eurycyde as the typical species. 

 < )t these divergencies may be accentuated, the narrow elong- 

 ated form of the body, the enormous development of the 

 proboscis and the absence of any distinct scape, the struc- 

 ture of the chelifori and. tinally, tin- armature of the false 

 legs and the form of the caudal segment. The genus 

 Barium, established by Dohrn, appears, in some respects, 

 to approach the present type still closer than the pre- 

 ceding genus; and the one of the species B. castelli, 

 especially, shows in its external habit an unmistakable 

 resemblance to the species of the genus Aschorynchus, 

 whilst the second species. H. arenosa, reminds in this 

 respect more of the genus Eurycyde. There are. however, 

 certain features that appear to separate both those species 

 from the genus Eurycyde as well as Ascorhynchus. and 

 which forbid their union with any of those genera. Besides 

 the species more particularly described hereafter. 3 species 

 from the Challenger Expedition, described by Hoek. per- 

 tain to it, and a form from Japan described by Bohm. 

 under the appellation Gnamptorynchus ramipes, has also 

 been referred by Hoek to this genus. The number of the 

 species is thus, at present, not less than 5 altogether. 



41. Ascorhynchus abyssi, G. 0. Sårs. 



(Pl. XIV. fig. -_'. a— ti. 



Aschorynchus abyssi, G. O. Sårs, Prodromus descript. Crust. 



& Pycnog. etc. No. 8. 

 — G. O. Sårs, Pycnogonidea borealia & 



arctica, No. 41. 



Specific Characters. Body narrow cylihdrical, with 

 relatively short and widely separated lateral processes. 

 The 3 foremost segments with the posterior part elevated, 

 and continued into a pointed process directed upwards; a 

 similar hut somewhat smaller procejss at the extremity of 

 each of the lateral processes. Cephalic segment some- 

 what longer than the l> succeeding segments together; 

 frontal part successively expanded towards the extremity, 

 whichps abruptly truncated. Caudal segmenl verj nar- 

 row, somewhat hent downwards. Ocular tnbercle quite 

 in front, bluntly rounded at the end. with a short 

 dentiform prominence on each side and without trace 

 of visual elements. Proboscis of particularly great size, 

 as long as the 3 anterior segments together, strongly 

 tumeficated at the middle, almost piriform and folded 

 under the belly. Chelifori about half as long as 

 the cephalic segment, scape single-jointed, haud, in fully 



