11 



Basis åndes et Lag ai kortere Spikier, hvis Spidser rager 

 frit ud paa Underfladen og langs Randen er længere end 

 forresten paa Underfladen og saaledes danne Spikelkrandsen 

 langs Randen (Tab. II, Fig. 7). 



Findested. 



Station ukjendt. 



Suberites glabra, n. sp. 



En langagtig, rund Stilk, der kun bestaar af tr°ac 

 Naale, som danner et Maskeværk uden bestemt Anordning 

 af Maskerne. I Overfladen sidder kortere Naale perpen- 

 dikulært paa samme (Tab. II, Fig. 9). 



Findested. 



Station ukjendt. 



Desmacidinæ. 



Ligeoverfor disse Svampe er jeg i stor Forlegenhed, 

 da jeg ikke med Sikkerhed ved at henføre de forskjellige 

 Former til de af Vosmaer l opstillede Genera. Jeg be- 

 gyncler med nogle Svampe, som jeg antager hører til 

 Myxilla. 



Myxilla exigua, n. sp. 



Et tyndt, hvidligt Lag paa Skallen af en bivalv 

 (Terebratula ?) ; det bestaar af et forvirret Net af trac og 

 trac sp. Naale, mellem hvilke eler lindes talrige anc-anc, 3 

 (Tab. II, Fig. 2). 



Findested. 



Station ukjendt. 



1 Vosmaer: The family of the Desmacidinæ. 

 Levden Museum. Vol. II, 1879. 



■ Notes from the 



surface, and at the base, there is found a layer of shorter 

 spicules, whose points, freely, project on the inferior surface 

 and along the margin, in which last named situation they are 

 longer than on the inferior surface, otherwise, and produce, 

 thus, spicular wreaths along the margin (PI. II, Fig. 7). 



Habitat. 



No record. 



Suberites glabra, n. sp. 



An elongate, round stem, which is composed, exclus- 

 ively, of tr°ac spicules, forming a reticulation without any 

 definite regularity of the meshes. On the surface, short 

 spicules appear, placed perpendicularly in it (PL II, 

 Fig. 9). 



Habitat. 



No record. 



Desmacidinæ. 



In regard to these sponges, I find myself in a great 

 difficulty; because, I do not see my way, clearly, to assign 

 with certainty, the various forms, to the genera established 

 by Vosmaer ! . I commence with a few sponges which I 

 suppose to pertain to Myxilla. 



Myxilla exigua, n. sp. 



A thin, whitish layer, on the shell of a bivalve (Tere- 

 bratula?). It consists of a confused reticulation of trac 

 and trac sp. spicules, between which numerous anc-anc 3, 

 spicules appear (PI. II, fig. 2). 



Habitat. 



No record. 



1 Vosmaer. The family of the Desmacidinæ. — Notes from the 

 Ley den Museum. Vol. II, 1879. 



2* 



