98 
31. Nymphon megalops, G. 0. Sars. 
(PI. X, Fig. 3, a— g). 
Nymplion megcdops, Prodrom. descript. Crust. & Pycnog. 
etc. No. 7. 
— — G. 0. 8ars, Pycnogonidea borealia & 
arctica, No. 31. 
Artseharacter. Meget lig foregaaende Art, men 
Ryggen glat, uden dorsale Fremspring. 0ieknuden meget 
stor og tyk, stump konisk, med ualmindelig stserkt ud- 
vildede Lindser. Snabelen af Hovedsegnmntets Laengde, 
cylindrisk. Saxlemmerne smaa, noget lig sainme lios fore- 
gaaende Art, men med Haanden forholdsvis licit storre og 
Fingreue kortere end Palmen, den bevmgelige med et tyde- 
ligt Indtryk fortil ved Basis. Folerne noget kraftigere end 
hos foi'egaaende Art, 2det Led lamgst, sidste aflangt ovalt, 
kortere end naestsidste. De falske Fodder ikke meget 
lseugere end Legemet, 5te Led kortere end Endedelen; 
Ran dtorn erne forholdsvis smaa, rundtakkede i Kanterne. 
Gangfodderne stserkt forlsengede, omtrent 5 Gauge Isengere 
end Legemet, temmelig kraftigt byggede, 2det Lmgled mere 
end 4 Gange Isengere end det terminate Afsnit, Tarsalled- 
det og Fodleddet omtrent af ens Lsengcle, men noget 
spinklere end hos foregaaende Art, det sidste med omtrent 
6 Torner i det ydre Parti af lnderkanten; Endekloen for- 
holdsvis kort, neppe halvt saa lang som Fodleddet; Bikloerne 
vel udviklede, omtrent ‘/ 3 saa lange som Endekloen. Lege- 
mets Lsengcle 13 mm ; Spandvidde 140”™. 
Bemserkninger. Denne Art staar sserdeles nser fore- 
gaaende, men er dog meget let kjendelig fra sanime ved 
den fuldstsendige Mangel af de for hin Art saa charac- 
teristiske dorsale Fremspring. Ligeledes er 0ieknuden 
kjendelig storre og Lindserne af ualmindelig Uclvikling, 
hvad der har givet Anledning til Artsbensevnelsen. 
Beskrivelse. Legemets Lcengde hos de storste er- 
holdte Exemplarer er 13’™, med en Spandvidde af 140’"”*, 
og denne Art opnaar saaledes en endnu betydeligere Stor- 
relse end foregaaende. 
Kropsformen er (se PI. X, Fig. 3) idethele tem- 
melig lig samme hos foregaaende Art; dog maaske licit 
slankere. Selve Kroppen (Fig. 3 a, 3 b) er oventil ganske 
glat, uden Spor af nogen dorsale Fremspring, og har Side- 
fortsatserne af betydelig Storrelse samt skilte ved t.yclelige, 
skjondt ikke meget brede Mellemrum. Hovedsegmentet er 
omtrent saa langt som de 3 folgende Segmenter tilsammen 
og har eu tydeligt markeret Hals, der er kjendelig smalere 
end hos foregaaende Art; Pandedelen synes forholdsvis 
lidt stserkere udvidet end hos denne Art. 
i 
0ieknuden (se Fig 3 a, 3 b) er sserdeles stor og 
tyk, nsesten pyramideformig, og lige opadrettet; forfra eller 
bagfra seet (Fig. 3 e), riser Enden sig noget afstumpet, 
31. Nymphon megalops, G. 0. Sars. 
(PI. X, fig. 3, a— g). 
Nymphon megalops, G. O. .Sars, Prodromus descript. Crust. 
& Pycnog. etc. No. 7. 
G. 0. Sars, Pycnogonidea borealia & 
arctica, No. 3i. 
Specific Characters. Very like the preceding species, 
but the back smooth, without dorsal projections. Oculiferous 
tubercle very large and thick, obtusely conical, with the 
lenses remarkably well developed. Proboscis same length 
as the cephalic segment, eylindric. Chelifori small, some- 
what resembling those of the preceding species but with 
the hand, relatively, a little larger and the fingers shorter 
than the palm, the mobile one having anteriorly at the base 
a distinct indenture. Palpi somewhat stronger than in the 
preceding species, 2nd joint the longest, last one oblongo-oval, 
shorter than the penultimate one. False legs not much 
longer than the body, 5th joint shorter than the terminal 
part; marginal spines comparatively small, obtusely serrate 
on the edges. Ambulatory legs greatly elongated, about 
5 times longer than the body, rather powerful in structure, 
2nd tibial joint more than 4 times longer than the terminal 
section, the tarsal and propodal joints about equal in 
length, but somewhat more slender than in the preced- 
ing species, the latter with about 6 spines on the distal 
part of the inner edge; terminal clau r comparatively short, 
hardly half the length of the propodal joint; auxiliary 
claws well developed, about one-third as long as the 
terminal claw. Length of body 13”™; extent 140"™. 
Remarks. This form approximates very closely indeed 
the preceding species, but is, however, readily recognized 
by the total absence of the dorsal projections so charac- 
teristic ot that form. Moreover the oculiferous tubercle 
is appreciably larger, and the lenses remarkably strong in 
development, a feature which has suggested the specific 
designation. 
Description. The body, in the largest examples 
obtained, has a length of 13'"’", with an extent of 140"™ ; 
hence this species attains a still more considerable size 
than the preceding one. 
The form of the body (see PL X, fig. 3) is, on the 
whole, very similar to that of the preceding species, but 
possibly a little more slender. The trunk itself (fig. 3 a, 
3 b) is, superiorly, quite smooth, without a trace of any 
dorsal projection, and has the lateral processes of considerable 
size and separated from each other by distinct, though not 
very wide intervals. The cephalic segment is about as long 
as the 3 following segments taken together, and has a dis- 
tinctly defined neck, which is appreciably narrower than in 
the preceding species; the frontal part would seem to be 
relatively a little more expanded than in that form. 
The oculiferous tubercle (see fig. 3 a, 3 b) is ex- 
ceedingly large and thick, almost pyramidal, and directed 
straight upwards; viewed anteriorly or posteriorly (fig. 3 e). 
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