19 



buet og bevæbnet med flere Torner, hvoraf en udmærker 

 sig ved betydeligere Størrelse. Fodleddet er meget ki at 

 tigt udviklet. ikke fuldt 4 Gange længere end bredl og 

 temmelig stærkt krummet. Det er langs den ydre Kant 

 og ved Enden besat med en Del uregelmæssigt fordelte 

 Torner, hvoraf den til det ydre tilspidsede Hjørne fæstede 

 er stmst. Inderkanten af Leddet er jevnt indbugtet og 

 danner ved Basis en bred pladeformig Udvidning; langs 

 hvilken til særegne Afsatser er tiestet 5 meget stærke for- 

 ti! krummede Torner, hvoraf dog de 2 yderste er stillede 

 jevnsides: foran dem følger en Kad af omkring 7 uoget 

 mindre Torner. Endeldoen er meget kraftig, mere end 

 halvt saa lang som Fodleddet. mod hvis indre tornbesatte 

 Kant den kan indbøies. Den er stærkt krummet og ved 

 Basis forti! forsynet med 2 ve] udviklede, til en særegen 

 Afsats fæstede Bikløer, der omtrent er afEndekloens halve 

 Længde. De 2 ovenbeskrevne sidste Led tilligemed Ende- 

 ldoen danner et meget kraftigt Griberedskab, hvormed 

 Dyret kan klamre sig tast til Hydroider og andre Gjen- 

 stande paa Havbunden. 



Integumenterne er temmelig tykke, af læderagtig Con- 

 sistens og overalt forsynede med smaa circulære Felt (Aab- 

 uinger for Budkjertler). De er hos det levende Dyr tem- 

 melig gjennemsigtige, saa at forskjellige af de indre Orga- 

 ner mere eller mindre tydeligt skinner igjennem, uavnlig 

 den intensiv grønfarvede Tarm med sine lige ind i Fod- 

 leddet rækkende Sideforlængelser. Seet fra Bugsiden viser 

 sig ogsaa Buggangliekjæden med sine 5 store Ganglier 

 meget tydeligt (se Fig. 3a) skinnende igjennem Huden. 



[ngen af de af mig undersøgte Individer var æg- 

 bærende. Men ifølge Dohrn skal Hannerne til sine Tider 

 være forsynede med et sort Antal. til de falske Fodder 

 klæbende kugleformige Ægmasser, der ofte ganske dækker 

 Undersiden af Legemet og hver indeholder talrige meget 

 smaa Æg. 



Dyrets Farve har. navnlig paa Grund af den gjen- 

 nemskinnede Tarm med sine blinksækformige Forlængelser, 

 en mere eller mindre intensiv grøn, sjeldnere brunagtig 

 Tone. 



Forekomst. Jeg har kun tåget denne Fornt paa en 

 eneste Localitet ved vor Vestkyst. Bennæsø ved Stavanger, 

 paa nogle faa Favnes Dyb medlem Alger og Hydroider. 

 I vort Museum opbevares imidlertid en Del Exemplarer 

 tagne af min Fader ved Florø og Manger, og et enkelt 

 Individ fra Søndmør. Krøyers Exemplarer var ligeledes 

 fra vor Vestkyst. 



Udbredning. Arten er aabenbart en mere sydlig 

 Form: thi Jar/ynsky's Angivelse af dens Forekomst ved 

 Russisk Lapland tror jeg maa bero paa en Feiltagelse. 



projects outwards as a narrow lobe, beset with 2 small 

 bristles; its inner margin is considerably arched and armed 

 with severa] spines, one of these exhibiting a much larger 

 si/e. The propodus is very powerfully developed, not 

 quite 4 times as long as broad, aud rather sharply curved. 

 Along the outer margin, and at the extremity, it is beset 

 with a number of irregularly disposed spines. of whieh 

 that affixed to the sharp outer corner is largest. The 

 inner margin of the joint is uniformly incurvate, and 

 constitutes at the base a broad lamellar expansion, along 

 whieh are affixed, to separate ledges, 5 very strong, 

 anteriorly bending spines. the 2 outermost however being 

 in juxtaposition ; in front of them extends a series of 

 about 7 somewhat smaller spines. The terminal claw is 

 very powerful, more than half the length of the propodus, 

 against the inner spiniferous margin of whieh it admits 

 of being bent. Tt is strongly curved, and furnished at the 

 base anteriorly with 2 well-developed auxiliary claws, affixed 

 to a special ledge, and attaining about half the length of 

 the terminal claw. The 2 last joints, described above, 

 together with the terminal claw, constitute an exceedingly 

 powerful prehensile organ, by means of whieh the animal 

 can clasp hold of Hydroids aud other objects met with 

 on the sea-bed. 



The integuments are rather thiek. coriaeeous in eon- 

 sistence, and everywhere provided with small circular 

 areas (openings for the cuticular glands). In the living ani- 

 mal, they are comparatively translucent, so that divers of 

 the inner organs shiue more or less distinctly through. in 

 particular the dark green-coloured intestine, with its lateral 

 prolongatioiis extending even into the propodus. Viewed 

 from the ventral side, the nervous chord, with its .") Large 

 ganglia, can also be seen, shining through the skin (see 

 hu. 3a). 



None ol' the specimens I examined were ovigerous. 

 But according to Dohrn. the males are furnished at times 

 with a large number of globular egg-masses adhering to 

 the false legs. whieh often quite (cover [the under surface 

 of the body aud contain each of them numerous minute 

 ova . 



The colour of the animal, more especially [owing to 

 the translucent intestine with its eæcal prolongations, has 

 a more or less pronounced green, seldom a brownish tint. 



Oecurrence. — I have tåken this form in but a 

 single locality, on the west coast of Norway, Rennesø near 

 Stavanger, at the depth of a few fat horns, between Algæ 

 and Hydroidæ. ln the University Museum, however. are 

 preserved divers specimens collected by my father at Florø 

 and Manger, as also a solitary individual from Søndmør. 

 Krøyers specimens were likewise from the west coast of 

 the country. 



Distribution. — The species is evidently more of 

 a southern form; for Jarzynky's statement as to its oecur- 

 rence on the coast ut' Russian Lapland, must. I certainly 



