1905. | SPONGE CLATHRINA CONTORTA. 9 
Text-fig. 3. 
gh 
Ga 
eh 
Spicules of two specimens of Olathrina contorta from Banyuls. 
Figg.2a@ & 6, thick quadriradiates; 2¢ & d, slender quadriradiates; 2e & f, 
triradiates; 2g, quadriradiate showing gastral ray in profile; 2/,a monaxon, 
3a & b, quadriradiates of another specimen ; 3 c-3 h, monaxons. 
