EXPLANATION OF PLATE VII. 

 Spicules of Indian varieties of Spongilla suuiatrana, Weber 



a = typical inacroscleres. 6 = other macroscleres. c = free microscleres. 

 r/ = gemmule-spictiles. 



Fig, I. — Spongilla sumatrana var. centralis, nov., X 250. 

 ,, 2. — Spongilla sumatrana var. rivularis, nov., X 250. 

 ,, 3. — Spongilla sumatrana var. indica, Annand., X 250. 



