368 ME. A. DENDY ON WEST-INDIAN CHALININE SPONGES. 



Fig. 6. Spinosella sororia, var. dilatata. Portion of dermal skeleton as seen in surface 



section; X25. 

 Fig. 7. Spinosella sororia. Portion of vertical section showing the arrangement of 



the main skeleton ; X 25. 



PLATE LIX. 



Fig. 1. Spinosella sororia, x J. 



Fig. 2. Spinosella velata, X-g. 



Fig. 3. Spinosella sororia, var. fruticosa, Xj>- 



PLATE LX. 



Fig. 1. Spinosella plicif era, xf. 

 Fig. 2. Pachychalina variabilis, X f. 



PLATE LXI. 



Spinosella maxima, xf. 



PLATE LXII. 



Fig. 1. Siphonochalina procumbens, x|. 

 Fig. 2. Siphonochalina ceratosa, X^- 

 Fig. 3. Siphonochalina spiculosa, X^. 



PLATE LXIII. 



Fig. 1. Spinosella sororia, var. elongata, xi- 

 Fig. 2. Spinosella sororia, var. dilata, X h 



