> 1160 
|. that these sponges certainly do not belong to Suberites and 
2. that the two “species” are identical. I believed a new genus had to 
Fig. 1. Fig. 2. Fig. 3. 
Fig. 1. Rhabdocrepid desma; aa. axial thread of the crepis, cr; epi epirhabd. 
Fig. 2—3 Tetracrepid desma, az. and cr. as in fig. 1; epa epactines; t. 
tubercles. The layers which form the prosthema are in all three figures 
represented by dotted lines 
be established for which I proposed the name Crambe. Because of 
the isochelae I diseovered in type-specimens both of Suberites crambe 
and fruticosus, 1 arranged the genus Crambe under the Desmacidinae. 
Unacquainted with these statements, LENDENFELD (1894 y) once 
more identified the two “species” and again coined a new generic 
name viz. Tetranthella. Obviously this name is a synonym of Crambe 
and acvordingly it has to be cancelled.') Whereas I considered the 
sponge under consideration to belong to the Desmacidonidae, LENDEN- 
FELD brought it to the Lithistida. Now it is universaily admitted 
that these two groups stand far from each other. How then is 
this contradiction to be explained? The fact is that in Scnmipt’s 
sponge, in addition to the styl, which form the great bulk of 
spicules and indeed chiefly compose the skeleton, two other sorts 
of spicules are met with, viz. isochelae and spicules, which look like 
desmas. The former we know to be characteristic of Desmacidon- 
idae, the latter of Lithistida. LENDENFELD says (1894 y p. 50): 
“Microselere habe ich nicht finden können. Wohl beobachtete ich 
zweimal ein Chel. Aber es scheint mehr als fraglieh ob diese Chele 
nicht von aussen her zufällig hineingerathen sind”. LENDENFELD, 
therefore, believes the sponge to belong to the Lithistida. My opinion 
was, on the contrary, that the chelae were of primary importance 
1) It seems to me superfluous to enter into a discussion of the nomenclature; 
enough can be found in the papers by Torsenr and Trrere. The more so, as | 
will demonstrate later on that both names, Crambe as well as Tetranthella should 
be cancelled. 
