PLATE XLVII. 



PAGE 



Fig. 1. Gelliodes licheniformis, surface section, as seen in alcohol, showing the 



horny fibre {h.f.), ....... 48 



Fig. la. Surface section, as seen in Canada balsam, showing the spicules {s), while the 

 horny fibre Qi.f.) is barely visible. 



Fig. 2. Amjohilectus ceratosns, vertical section, showing the horny fibre {h.f.), 



and the arrangement of the spicules, . . . .125 



Fig. 3. Myxilla rosacea, var. japonica, vertical section, showing the arrangement 



of the skeleton ; d.s., dermal brushes of spicules ; m.s., main skeleton, 130 



Fig. 4. Plumohalichondria mammillata, surface section, showing the arrangement 



of the dermal skeleton, . . . . . .156 



Fig. 4a. Vertical section, showing the plumose skeleton fibres {p.c). 



Fig. 5. Clathria lendenfeldi, section parallel with and near the surface, showing 

 the skeleton arrangement ; h.f., the stout horny fibre echinated by 

 spined styU, . . . . . . .148 



Fig. 6. Desmacidon (?) ramosa, surface section, showing the radiating tufts of oxea, 107 



Fig. 7. Phelloderma radiatum, vertical section, showing the arrangement of the 

 skeleton; c, cortex; s.f., skeleton fibres; f.b., foreign bodies; 

 ^, isochelse, . . . . . . . .114 



