128 GLASS XIII. ORDER 11, 



part within, naked at the base, the upper part 

 with generally lateral ramifications furnished with 

 rows of tubular denticles, producing radiated po- 

 lypes from each tube. 



ALCYONIUM, (mushroom-coral,) animal general- 

 ly growing in the form of a plant, stem fixed, 

 fleshy, gelatinous, spongy or coriaceous, beset 

 with polypi bearing stellate cells. 



SPONGIA, (sponge,) animal fixed, flexile, torpid^ 

 of various forms, composed either of reticulate 

 fibres, or masses of small spines, interwoven to- 

 gether, and clothed with a gelatinous flesh, full of 

 small mouths on its surface., by which it absorbs 

 and rejects water, 



