!^3 



Fcirpt pfterat jeg liavde fiirs\-iii't niig nicil en meget 

 lang, 4— f) Alens Stang, til hvis Knde Haavr-n fast- 

 bandtes, kunde jeg fange den i storre Antal; men 

 mange Exemplarer gik endnu saa d\'lit, at det var 

 umiiligt at naa i dem. 



l•^ll•UlU•n ]iaa Filefjeld er den at' nn atdode 

 Gartner Moe tåget i Lom, og af Landskalisnialer 

 Skari ved Kongsvold jiaa Dovretjeld. 1 Finnnirken 

 er den derimod, saaxidt mig liekjriiilt, aldrig Ideven 

 ])aatrutt-et, ligesaalidt som i Lavlandet Syd paa. 

 Denne Pliyllo])ode er saaledes hos os ntvivlsomt en 

 ægte «relict» Form, der kun i vnre lloiljidde endnu 

 har fuiidet de nodvenilige i^etingelscr tor sin Fxi- 

 stenrc. 



Udbredning. — Arten Idev tnrst fundct i (Jrou- 

 land, hvor den synes at være meget almiudelig. 

 Senere <'y den ogsaa observeret i det arktiske Ame- 

 rika, |)aa Spitsbergen, paa Xovaja Scndja og i 

 Sibirien. Den er saaledes en a'gtr arktisk Form, og 

 i sin Udbredning circumpolar. 



was limited to a verv iev.' speeimens. It was only 

 when 1 ha<l ]iro\idi'd m\'s(dt' with a ver\' long rod 

 — S or 10 feet long — to the end of whicdi the 

 net was attaidied, that 1 was able to eajjture them 

 in largei- numbers; and many of them were still in 

 suih deep watei'. that it was impossible to get 

 at them. 



Besides being found on the Kilefjidd. it was 

 foniul by the late tlorist, Moe, in the Loni. and 

 by lands<ape-])ainter Skari at Kongsvold on the 

 Do\re Mountains. On the other hand, it has nrvi-r, 

 to my knowledge, bciui nu-t with in Finnuirk, nor 

 yet in the south lowlands. This Phyllopod is thus 

 in this country (\oi-way) a true «relict» form, which 

 has found only on our mountains the conditions 

 necessary for its existence. 



Distribution. 'i'he species was rirst found in 



(Treenland, where it seems to be very common. It 

 has since been observed in arctic America, on Sj)itz- 

 bergen, Xovaia Zemlia, and in Siberia. It is thu.s 

 a true arctic form, and circumpolar in its distribution. 



Sectio III. Concliostmca. 



S>/7i: Phi/llopoda conchlforinia. 



Characteristik. — Legemet omgivet af en stor, 

 tN-eklajijiet Ska! af chitinos Structur og fæstet til 

 samnu^ ved et smalt dorsalt Ligament. Valvlerne 

 bevægelige ved Hjadp af en stærk Lukkemuskel og 

 forbundne dorsalt med hinanden uden iu)gen egentlig 

 Laas. Hovedet bcvægeligt og vel sondret tVa Kroj)- 

 pen, gaacndc ud i et mere eller miiidr(> fi'emragende 

 sammentrykt Rostrum. l\ro|]pcn cnsformigt seg- 

 menteret og endende med en kort, mere eller min- 

 di'e omboiet^ lialedid, su'dvanligvis for.synet i Knden 

 med 2 stierke Iiexjegidige Klor og luerende dorsalt 

 2 jevnsides stillede Horster. De sammensatte t)ine 

 nær sammen, undeitiden sanniiensmeltede, og belig- 

 gende i det imli'e af Hovedet. I)et enkle Oie vel 

 ud\iklet. Hegge Par F(dere tilstede. Iste l*ar for- 

 holdsvis sniaa, enkle; 2det I'ar omdannede til kraf- 

 tige, tvegrenede Svomnieorganer. Munddcdene nu'r- 

 mest lignende dem hos (ii'u|]pen A)>ns/rftr(i. Fod- 

 derm- a f nnifoi'm Hygning, pladeformige, lligede, med 

 tvdeligt udviklet Coxiillap og med i'^xopoditen delt 

 i en dorsal og en ventral Lap; det Iste eller de 



Section 111. Coiidiostraca. 



Sl/n: L^liyllopoda conchiforinia. 



Characters. — l^ody surrounded i>y a large bi- 

 valved sh(dl ot' chitinous structure, to which it is 

 attached bv a narrow dorsal ligament. \alves 

 nu)vable b\- the aid of a strong adductor muscle, 

 and connected dorsally with one another withmit 

 having a true liiuge. Head movable and well- 

 detined from the trunk, terminating in a more or 

 less prominent, lomjiressed rostrum. Trunk uni- 

 formlv segmented, emling in a short, more or less 

 detlexed caudal part, generally provided at the extre- 

 mitv with two strong, movalile (daws, and bearing 

 dorsallv 2 juxta|)osed l)rist!es. ("ompound eyes dose 

 together, sometimes merged into one another, and 

 situated in the interior of the iiead. Ocellus well 

 develojied. Hoth pairs of antenna^ present. 1st pair 

 com])arativel\- small, simple; "Jnd pair transformed 

 into ])owerful, biranmus luilatory organs. Oi-al 

 parts nu)st nearly resembling those in the A)inslrara 

 grou]) Legs of nuitorm structure, lamellar, lobate, 

 with distinctly devcdoped coxal lolie. and with the 

 exojxtdite divided into a dorsal and a ventral lol)e; 



