S3 



Forst efterat jeg' liavde forsynet mijr med en met^-et 

 lang-, 4— f) Alens Stang, til hvis Ende Haaven fast- 

 handtes, knnde jeg- fange den i storre Antal; men 

 mange Exeraplarer gik endnn saa dyl)t, at det var 

 iimnlisrt at naa i dem. 



Foruden paa Filefjeld er den af nu afdode 

 (lartner Moe tåget i Lom, og af Landskabsmaler 

 Skari ved Kongsvold paa Dovrefjeld. I Finmarken 

 er den derimod, saavidt mig bekjendt, aldrig bleven 

 paatrutFet, ligesaalidt som i Lavlandet Syd paa. 

 Denne Pliyllopode er saaledes hos os ntvivlsomt en 

 ægte ■relict» Form, der kun i vore Hoifjelde endim 

 har fundet de nodvendige Betingelser for sin Kxi- 

 stenee. 



Udbredning. — Arten blev forst fundet 1 Gron- 

 land, hvor den sanies at være meget almindelig. 

 Senere er den ogsaa observeret i det arktiske Ame- 

 rika, paa Spitsbergen, paa Novaja Semlja og i 

 Sibirien. Den er saaledes en ægte arktisk Form, og 

 i sin Udbredning tircumpolar. 



was limiteil to a very fev,' specimens. It ■was (nily 

 when I bad provided myself with a very long rod 

 — S (ir 10 feet long — to the end of which the 

 net was attached, that I was able to capture them 

 in larger numliers; and many of them were still in 

 such deeji water, that it was impossible to get 

 at them. 



Besides being found on tlie Filefjeld, it was 

 found liy the late llorist. Jloe, in the Lom, and 

 by landscape-painter Skari at Kongsvold on the 

 Dovre Mountains. On the other hand, it has never, 

 to my knowledge, been met with in Finmark, nor 

 yet in the south lowlands. This Phyllopod is thus 

 in this country (Xorway) a true relict» form, which 

 has found only on our mountains the (Huiditions 

 necessary for its existence. 



Distribution. — The species was first found in 

 (Treenland, where it seems to lie very rommon. It 

 has since been observed in arctic America, on Sjiitz- 

 licrgen, Xovaia Zemlia, and in Siberia. It is thus 

 a true arctic form, and circumpolar in its distril>ution. 



Seetio III. Coneliostraca. 



Syii: Pliijllopoda conchiforiuia. 



Characteristik. — Legenui-t omgivet af en stor, 

 tveklappet Skal af chitinos Structur og fæstet til 

 samme ved et smalt dorsalt Ligament. Valvlerne 

 bevægelige ved Hjælp af en stærk Lukkemuskel og 

 forbundne dorsalt med hinanden uden nogen egentlig 

 Laas. Hovedet bevægeligt og vel sondret fra Krop- 

 pen, gaaende ud i et mere eller mindre fremragende 

 sanimentrykt Rostrum. Kroppen ensformigt seg- 

 menteret og endende med en kort, mere eller min- 

 dre ombøiet Haledel, sædvanligvis forsynet i Enden 

 med 2 stærke bevægelige Klor og bærende dorsalt 

 2 jevnsides stillede Burster. De sammensatte Hine 

 nær sammen, undertiden sammensmeltede, og belig- 

 gende i det indre af Hovedet. Det enkle (^ie vel 

 irdviklet. Begge Par Folere tilstede. Iste Par for- 

 holdsvis smaa, enkle; 2det Par omdannede til kraf- 

 tige, tvegrenede Svonimeorganer. Munddelenc nær- 

 mest lignende dem hos (Truppen Anosiraca. Fod- 

 derne af uniform Bygning, pladeformige, fligede, med 

 tydeligt udviklet Coxallap og med Fxopoditen delt 

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



Section ni. Coneliostraca. 



Sl/n: Pliyllo]^)oda conchiformia. 



Characters. — J>u'\y surrounded by a large In- 

 valved shell of cliitinous structure, to which it is 

 attached by a narrow dorsal ligament. Valves 

 movable bv the aid of a strong adductor muscle, 

 and connected dorsally with one another witliout 

 having a true hinge. Head movable and well- 

 defined from the trunk, terminating in a more or 

 less ]irominent, compressed rostrum. Trunk uni- 

 formly segmented, ending in a short, more or less 

 deflexed c.aaidal part, generally provided at the extre- 

 mity with two strong, movable claws, and bearing 

 dorsally 2 juxtaposed bristles. Compound eyes (dose 

 together, sometimes merged into one another, and 

 situated in the interior of the head. (.)cellus well 

 developed. Both pairs of anteniuc present, 1st pair 

 comparatively small, simple; 2nd pair transformed 

 into ]iowerful, bi-ramous natatory organs. Oral 

 parts most nearly resembling those in the Aiiofttrnca 

 group Legs of uniform structure, lamellar, lobate, 

 with distinctly developed coxal lobe, and with the 

 exo]iodite divided into a dorsal and a \entral lolie; 



