alle Retninger ; de hvidlige Fortykkelser ere smaa Pyramider, 

 der er opbyggede af samme Sort Naale og paa hvis Spidse 

 der ingen Aabning kan opdages; muligens har Svampen 

 ved Hjælp af disse været fæstet til sit Underlag. Tab. I, 

 Fig. 11 og Tab. VI, Fig. 12. 



Findested. 



Station ukjendt. 



De følgende Dyr har istedetfor Naåle af Formelen 

 ac 2 saadanne med Formelen trac, altsaa stumpe i den 

 ene Ende og spidse i den anden. De burde derfor kanske 

 rettest opføres under et andet Slægtnavn end de foregaaende ; 

 men da der blandt de af Oskar Schmidt under Reniera 

 beskrevne Dyr åndes Former med stump-spiclse saavelsom 

 med spicls-spidse Naale, saa beholder jeg dette Slægtsnavn 

 ogsaa for disse Former. 



Reniera digitata, n. sp. 



En Svamp med fem lappeformige Forgreninger fra en 

 fælles Stilk, temmelig blød og løs i Strukturen, har kun 

 trac Naale, dels rette, dels krummede, enkelte dobbelt 

 krummede. Tab. I, Fig. 5. 



Findested. 



Station 260. 



Reniera nivea, n. sp. 



Dels enkle Personer, dels Samlinger af saadanne paa 

 tynde Placler; de enkelte Svampe er aflange, tildels pære- 

 formige, dels cylinderformede, nogle aabenmundede, andre 

 lukkede for Enden. Sækkens Vægge har en Tykkelse af 

 omtrent 0,b mm , og inde i en af dem fandtes en kornet 

 Masse, i hvilken der forekom spredte Kiselnaale, medens 

 cle andre var tomme. Væggene dannes af parallelt gaaencle 

 tykkere Naalebundter, udenpaa hvilke der tindes tvertgaaende 

 Naalebundter i nogenledes regelmæssige Afstancle fra hin- 

 anclen, men forresten kryclsencle hinanclen under mere eller 

 mindre spidse Vinkler. I cle af disse Naale dannede Ma- 

 sker findes Huller, der gjennembore hele Væggen. Ytterst 

 lindes et Lag af korte Naale, eler staar perpendikulært 



secting each other in all directions. The whitish tume- 

 factions are small pyramids, constructed of the same kind 

 of spicules, and upon whose points no aperture can be 

 detected. The sponge has, possibly, been attached by 

 means of these to its original support, (PI. I, fig. 11 

 PI. VI, fig. 12). 



Habitat. 



No record* 



The following animals, instead of having spicules 

 resembling the formula ac 2 , have spicules according to the 

 formula trac, or blunt at the one extremity and acuate at 

 the other extremity. They ought, therefore, perhaps, with 

 mostshow of reason, to be classified under another generic 

 designation than the preceeding ones, but, as amongst those 

 animals described by Oskar Schmidt under the designation 

 Reniera, there are found forms of spicules with blunted 

 points, as well as with acuate points, I have retained this 

 generic designation, also, for these animals. 



Reniera digitata, n. sp. 



A sponge having Hye lobate branches proceeding 

 from one common stem ; rather soft and loose in its struc- 

 ture. It has spicules of the formula trac only; partly 

 straight, partly, in single curves, and partly, with a few 

 spicules having double curves (PI. I, fig. 5). 



Habitat. 



Station No. 260. 



Reniera nivea, n. sp. 



Occasionally, isolated individuals, occasionally, collec- 

 tions of them, upon thin plates. The isolated sponges are 

 oblong, partly, pyriform, and partly, cylindrical: a few are 

 open-mouthed, whilst others, again, are closed at the extrem- 

 ities. The walls of the bag have a thickness of about 

 0.5 mm , and contained in one of the bags was found, a granular 

 mass, in which scattered siliceous spicules appeared, whilst 

 the others were empty. The walls are formed of parallel, 

 thickish spicular fasciculi, outside of which, transversal spic- 

 ular fasciculi are found, placed at somewhat regular inter- 

 vals from each other, but, otherwise, intersecting each other 

 at more or less acute angles. In the reticulation formed 

 by these spicules ; perforations occur, which completely pene- 



u 



wmm 



