:BY E. F. KALLMANN, 



3&7 



apical extremity is acutely pointed, and the basal end evenly 

 rounded oft". The spines are confined to the distal moiety of the 



n W 1\ Ml 7/ / / lid 



Text-fig. 1. 



Echinaxia frondula. — a, corint^ styli of the fibres; h, acaiithostyh ; t\ inter- 

 stitial styh of the axial skeleton; d, styli projecting from the extra- 

 axial fibres and hispiclating the surface of the sponge; e, abnormally 

 stout, projecting styli of the extra-axial fibres in the older portions 

 of the sponge. 



spicule, and are of minute size and closely set. The acanihostyli 



