142 
Gen. 2. Hippomedon, Boeck, 1870. 
Crust, amphip. bor. et arctica. 
32. Hippomedon Holbolii, (K royer) var. 
(PI. XII, Pig-. 2). 
Hippomedon abyssi, G. 0. Sars, Proclromus descriptionis Crust, etc., 
No. 04 (non Goes). 
Bemserkninger. Ved ii0iere Underspgelse har jeg 
fundet, at denne Form ikke som jeg for troede or Goes’s 
Lysianassa abyssi, men kun en eiendommelig Dybvands- 
varietet at Kroyer’s Art. Den skiller sig fra den seedvanlige 
ved vore Kvster forekommende Form ved betydeligere St 0 r- 
relse, noget mindre forty kket Skaft paa lste Par Folere og 
ved den fuldstaendige Mangel af 0ine. Hos den paa grundt 
l and forekommende Form er disse paa friske Exeinplarer 
meget tydelige og af en smnk carmo.sinrod Farve, men riser 
sig dog ved nmrmerc Undersngelse ogsaa her af en ufuld- 
kommen Bygning, idet Lindser eller andre lysbrydende 
Medier ganske mangier, hvorfor de ogsaa i Regelen ganske 
forsvinder paa Spiritusexemplarer. Hos den her omhand- 
lede Dybvandsform var derimod ogsaa hos de friskt ind- 
fangede Exeinplarer ethvert Spor af 0iepigment borte, og 
hele Dyret af en ensformig hvidagtig Farve. 
Forekomst. Yi har taget denne eiendommelige Ya- 
rietet paa 4 forskjellige Stationer (St. 40, 1 24, 200, 248), 
alle tilhorende den kolde Area; Dybden fra 350 til 1215 
Favne. 
Gen. 3. Anonyx, Kroyer, 1883. 
Gr0nlands Amphipoder. 
33. Anonyx calcaratus, G. 0. Sars, n. sp. 
(PI. XII. Fig-. 3, ;? a — m). 
Anonyx ( Hippomedon ) calcaratus, G. 0. Sars, Crust. & Pycnogonida nova 
etc., No. l(i. 
Artscharacteristik. Legemet saminentrykt fra Siderne 
med temmelig lioie Epimerer. Hovedets Sidevinkler sterlet, 
uddragne og tilspidsede. 3die Bagkropssegments Sideplader 
bagtil udtrukne i en usmdvanlig lang og spids skraat opad- 
rettet dolkformig Fortsats. Tngen tydelige 0ine. Fplerne 
af ens Lrengde : lste Par med Skaftets lste Led temmelig 
forkenget, Svoben neppe lsengere end Skaftet, Bisvoben liden, 
3-leddet. lste Fodpar med sidste I md ufuldstendigt sub- 
cheliformt. afsmalnende mod Enden og ken gore end dot 
Gen. 2. Hippomedon, Boeck, 1870. 
Crust, amphip. bor. et arctica. 
32. Hippomedon Holbolii, (Kroyer) var. 
(PL XII, fig. 2). 
Hippomedon abyssi, G. 0. Sars, Prodromus descriptionis Crust., etc., 
No. !)4 fnon Goes). 
Remarks. — A closer examination has convinced me 
that the present form is not, as I formerly opined, Goes’s 
Lysianassa abyss?, but simply a peculiar deep-sea variety 
of Kroyer’s species. It differs from the form usually oc- 
curring off the Norwegian coast by its much larger size, 
the less inspissated peduncle on the 1st pair of antennae, 
and by the total want of eyes. The form inhabiting 
shallow water has the latter organs, in fresh specimens, 
exceedingly distinct and of a beautiful crimson colour, but 
on closer examination, they exhibit, in this form too. an in- 
complete structure, since no trace exists either of lenses or 
other refracting media; and hence, as a rule, they entirely 
disappear in spirit-specimens. In the deep-sea form treated 
of here, not a trace of ocular pigment could, on the other 
hand, be detected; the animal was everywhere uniform 
whitish. 
Occurrence. — We took this characteristic variety 
at as many as 4 different Stations (Stats. 40, 124, 200, 
248), all in the cold area; depth ranging from 350 to 1215 
fathoms. 
Gen. 3. Anony x, Kroyer, 1883. 
Gr 0 n lands Amphipoder. 
33. Anonyx calcaratus, G. 0. Sars, n. sp. 
(PI. XII, fig. 3, 3 a — m). 
Anonyx (Hippomedon) calcaratus, G. 0. Sars, Crust. [& Pycnogonida nova 
etc., No. Hi. 
Specific Character. — Body compressed at the sides, 
with rather deep epimera. Lateral angles of head greatly 
produced, and pointed. Lateral plates of 3rd abdominal 
segment jutting out behind as a remarkably long and 
acute dagger-shaped projection, directed obliquely upward. 
No distinct eyes. Antennte uniform in length. First pair 
with 1st joint of peduncle rather elongate, flagellum scarcely 
at all longer than peduncle. Secondary flagellum small, 
tri-articulate. First pair of legs with last joint imperfectly 
i 
