16 



hos et Exemplar, og det er heller ikke hos alle, at der 

 findes rut-rut af to Størrelser, men disses Forskjel synes 

 mig dog at være for liden til derpaa at begrunde Arts- 

 forskjel. Skulde man benytte clen ydre Form til en saadan, 

 saa maatte helst den, der er fremstillet, Tab. III, Fig. 6, 

 opføres som en egen Art, da den synes at afvige fra de 

 andre derved, at der paa den tilsyneladende ikke findes 

 Naalebundter eller Blade som hos de andre; den er skin- 

 nende hvid af Farve og har Form af et lidet elegant Bæ- 

 ger paa en lang, tyncl Stilk. Under Mikroskopet viser det 

 sig imidlertid, at saavel Stilken som den udvendige Flade 

 af Bægeret er besat med korte Naalebundter. Den i Tab. 

 IV, Fig. 2 fremstillede Form er i sin nedre Ende spindel- 

 formet opdreven og her findes udenom Axen ophobet en 

 hel Del hvide, kugleformige Legemer, der rimeligvis er 

 Embryoner; ialfald ser de ud, som vare de Ansamlinger 

 af Eundceller, Embryoner i Morulastadiet. 



Findested. 



Et af de indfangede Dyr er fra Station 267, for de 

 Øvriges vedkommende er Findesteclerne ubekjendt. 



Cladorhiza abyssicola, M. Sårs. 



Af denne Form er der indfanget en Mængde Exem- 

 plarer, og disse er ogsaa af meget forskjelligt Udseende, 

 som det vil sees af Tab. VII, Fig. 7, 9, 10, 11, 12 og 

 13, men hos alle er Spiklerne ens paa smaa Afvigelser 

 nær, som det kan sees af Tab. IV, Fig. 3, 4, 5, 6, 7, 8, 

 9, 10, 11, 12 og 16. De smaa anc-anc er hos alle ens, 

 idet de for begge Ender har 5 Tænder, ikke 5 og 3, som 

 det almindeligvis angives. Buernes Form er noget afvi- 

 gende hos de forskjellige Exemplarer, som det kan sees af 

 Figurerne, specielt Fig. 6 og 10, hvor de er smækrere og 

 de ombøiede Ender ligesom udtrukne i længere Spidser, 

 men dette er for ubetydelige Afvigelser til at begrunde en 

 Artsforskjel, og heller ikke kan hertil bruges det For- 

 hold, at hos nogle Stavnaalene er forsynede med Qpdriv- 

 ninger paa Midten som i Tab. IV, Fig. 4, 5 og 11. Hos 

 et Exemplar har jeg ikke kunnet finde Buer, Tab. IV, 

 Fig. 3, men Ankerne har den samme Form og 5 Tænder 

 for hver Ende som ellers. 



Habitat. 



Findestederne er for de fleste Exemplarers vedkom- 

 mende ukjendt; de kjendte Findesteder er Station 31, 35, 

 40, 84, 359. 



in one specimen ; and neither are there found in all of 

 them, rut-rut spicules of two sizes; but these divergencies, 

 however, seem to me, to be too small, to establish from them, 

 a difference of species. If the external habit is made use 

 of for this purpose, then, the form illustrated in PI. Ill, 

 fig. 6, is the one which would, preferably, be presented as 

 an individual species, as it appears to differ from the others 

 in this, that upon it, there are, apparently, not found any 

 spicular fasciculi, nor leaves, as in the others. It is lust- 

 rously white in colour, and is shaped like a small, handsome 

 chalice, seated on a long slender stem. Viewed under the 

 microscope, it is, however, seen, that both, the stem and the 

 external leaves of the chalice, are beset with short spicular 

 fasciculi. The form illustrated in PL IV, fig. 2 is fusi- 

 form at the inferior extremity, and in this situation there is 

 seen, collected together around the axis, a large number of 

 white spherical corpuscles ; these are, presumably, embryons, 

 at all events, they appear as if they are collections of 

 round cellsj; embryons in the morular stage. 



Habitat. 



Station No. 267. One specimen. The record of the 

 stations, af which the remainder of the specimens were 

 obtained, has been lost. 



Cladorhiza abyssicola, M. Sars. 



Of this form, a multitude of specimens were obtained ; 

 and they are of very varying appearance, as will be evident 

 on referring to PL VII, figs. 7, 9, 10, 11, 12 and 13; but 

 in all of them, the spicules are alike, except as regards a 

 few trifling divergencies ; as may be seen in PL IV, figs. 



3, 4, 5, 6, 7, 8, 9, 10, 11, 12 and 16. The small anc-anc 

 spicules, are similar in all of the specimens, in so far, that 

 they have at both extremities 5 teeth, and not 5, and 3 teeth, 

 as is, usually, stated. The form of the bows is somewhat 

 various in the different specimens, as may be observed 

 from the illustrations, especially figs. 6 and 10, where they 

 are seen to be more slender, and the bent extremities 

 to be, as it were, attenuated into long points, but this 

 divergency is too trifling to establish a variety of species; 

 neither can we, in addition, make use of the fact, that 

 in some of them, the rod spicules are furnished with 

 bulbous tumefactions in the middle, as seen in PL IV, figs. 



4, 5 and 11. In one of the specimens, I have not been able 

 to observe bows (PL IV, fig. 3), but the anchors have the 

 same form, and 5 teeth on each extremity, as usual. 



Habitat. 



Stations Nos. 31, 35, 40, 84, 359. The greater part 

 of the specimens are, however, dredged, at stations the record 

 of which has been lost. 



