36 



boglicii I was not sure, but suggested a close relation to S. dor- 

 sigera, described by Schmidt in 1864. Marenzeller presently idea- 

 tiBes the latter with S. gruhii atid boglicii on account of the 

 spiculation. If I compare the figures of Marenzeller with mine, 

 I am bouud to say, that I fully agree with him. Before me lies 

 a printed plate of my Monograph with a large quantity of va- 

 rious spicules of S. dorsigera O. S. I also figured spicules of an 

 origiual specimen of Schmidt's S. gruhii, and thought there might 

 be a specific diöerence between both species, on account of the 

 »head" of the tetraxons. Now Marenzeller also figures tetraxons 

 of the same ^) original specimen of Schmidt's S. gruhii^ but his 

 figures leave uo doubt aboat the identity. In investigating ano- 

 ther bit of spicules of the same specimen I moreover find that 

 also such spicules occur as Marenzeller draws. Hence 1 follow 

 Marenzeller, happy that another species can be cancelled. I do 

 not possess preparations of *S. anceps O. S. but Marenzeller's figures 

 of it leave no doubt about the identity with «S. gruhii. As for 

 the occurence of trichodragmata I also agree more with Maren- 

 zeller than with Sollas and Auchenthaler. I too feel inclined to 

 consider them as spicules which miglit occur, but which do not 

 so always. I do not see spicula iudicautia in them , as I called 

 such spicules which are of specific value. 1 also believe that 

 Astrella Soll. is to be united to Stelletta. The example Maren- 

 zeller gives (p. 10) of S. dorsigera is striking» 



The genus Ancorina accordiug to Schmidt's diagnosis ought to 

 be cancelled. But Sollas and Marenzeller found sanidasters , and 

 on account of these I keep the genus provisionally. Marenzeller 

 also attributes specific value to the anatomy of the cortex. »Ein 

 nach allen Richtungen sich verzweigendes System von bliischen- 

 förmigen Hohlraumen , die mit einander in Verbindung treten, 

 nimmt den Raum ober der Faserschichte der Rinde ein und stellt 

 die Verbindung zwischen den nicht gedraugt liegenden Poren und 



1) I studied them in 1879, being in Graz at Prof. Schulze's Laboratory, and I be 

 lieve there was only one specimen of S. grubii , so it munt be the same. 



