376 KEVISION OF THE MONAXONID SPONGES, ii. 



placed upon the statement that, in addition to stj^li, "a few tylota 

 and oxea are also found"; for Lendenfeld has erroneously also 

 attributed all these three kinds of megascleres to each of the other 

 three species assigned by him to Tedania. Fourthly, the descrip- 

 tion is not in accordance with Lendenfeld's definition of Tedania, 

 inasmuch as it contains no mention of the occurrence of raphides 

 in the species. And, lastly, owing to the doubt which thus attaches 

 to the account given of the spiculation of Tedania tenuispina, it is 

 impossible to assert that the ostensible type-specimen is tiot an ex- 

 ample of the species upon which the description of the skeletal 

 characters of Tedania tenuispina was based, for in other respects, 

 it agrees with that description sufficiently well. 



I propose, therefore, to regard Tedania tenuispina as practically 

 synonymous with Stylotella agminata. 



For Reference List of Literature, see antea, pp. 3 10-3 13. 

 For Explanation of Plates xv.-xxiv., see antea, pp. 3 13-3 15 



