Spongillidae. 249 



Avholo oxhibit closo afünitv with those of tho Indian Peninsula — and 

 possiblv with tlioso of Tropical Asia generallv, for outside the Indian 

 Empire the Spon;tillidcte of Tropical Asia have been even less studied 

 than those of Africa. Those cohected by Professor Max Weber in the 

 Malav Archipelago, and a few from Western China. Borneo and the Malay 

 Peninsula are all that are known, and most of these have cosmopolitan 

 aftinities. 



EXPLAXATIOX OF FIGURE8. 

 Plate VI. 



Fig. 1. Spicules of Sj>07igilla africana, sp., nov., X "255. 



A. Skeleton-spiciües. 



B. Gemmule-spicules. 

 C Free microscleres. 



Fig. 2. Gemmuh^ of Spongilla africana, sp. nov., as seen from above X 75. 

 Fig. 3. Spicides of Spongilla michaelseni, sp. nov., X 255. 



A. Skeleton-spieules. 



B. Gemmule-spicules. 

 C Free microscleres. 



Fig. 4. Gemmule of Corcospongilla victoriae, sp. nov., X 75. The outer 



cage has been laid open to show the inner capside. 

 Fig. 5. Spicules of Corvuspongilla victoriae, sp. nov. 



A. Skeleton-spieules, X 255. 



B. Gemmule-spicules, X 255. 



C. Free microscleres. X 255 (except the hgure marked with 

 a X) whieh is multiplicd by 500). 



17* 



