155 



they are valid species easily separated. As to nigra (Semper) it is 

 shown in the description of Polyplectana, pag. 141, that there are 

 reasons for regarding it either as a Polyplectana, or if future 

 investigations will show that the number of the tentacles is really 

 15, as the genotype of another genus. Whether the name Tiede- 

 mannia really may be used for such genus is not at all certain, 

 but it will in any case be quite wrong to name it Chondrocloea as 

 suggested by Clark "The Apod. Holoth.", pag. 81. The genotype of 

 Chondrocloea is Synapta indivisa Semper, and though I have some 

 doubt as to the validity of this species, I would think it the most 

 reasonable to use this name for the oriental species here described 

 as Synaptula, in case hydriformis should in the future prove to 

 be generically different from them. 5. indivisa (Semper) is not re- 

 presented in the collection, and I have, as said above, some doubt 

 as to the validity of this species. If it really proves to be a valid 

 species, the long tentacles and the unbranched gonads make it 

 easily recognizable. 



Besides the 10 mentioned species 17 new species of this genus 

 are found in the material at hand. The larger part of them are 

 good species which are easily separated, but some few ones as 

 tualensis, rosea, östergreni and minima may ultimately be found to 

 be young specimens of some of the other species. In spite of this, 

 as they differ so much from the other specimens at hand, I suppose 

 it the better course to describe them as independent species. Thus 

 we know for the present, the following 28 species of the genus 

 Synaptula : 



reciprocans (Forskâl) 

 rosea n. sp. 

 aspera (Sluiter) 

 indivisa (Semper) 

 recta (Semper) 

 striata (Sluiter) 

 albolineata n. sp. 

 alba n. sp. 

 virgata (Sluiter) 

 jolensis n. sp. 

 psara (Sluiter) 

 denticulata n. sp. 



tualensis n. sp. 

 neirensis n. sp. 

 östergreni n. sp. 

 madreporica n. sp. 

 hydriformis (Lesueur) 

 rosetta n. sp. 

 maculata (Sluiter) 

 reticulata (Semper) 

 lamperti n. sp. 

 purpurea n. sp. 

 bandae n. sp. 

 menbrana n. sp. 



