19 



B.M. 



98. Keratoisis Grayii. 



Keratoisis Grayii, Perceval Wru/ht, in Ann. t^- Maq. Nat. Hist. 1868, 

 ii. p. 427, 1809, iii. p. 24, fig.' 



Fi"-. 0. 



Fig. 7. 



Fig. G represents a portion of the main axis, deprived of ccenencliynia 

 and of nearly all its polypes. 



Fig. 7 represents a branch, of the natural size, with the polypes. 

 Fig. 8. A polype magnified. 



Hah. Lisbon {Bocage). From a depth of about 400 fathoms, off 

 the coast near Setnbal in Portugal. 



Fam 12. ISIDiE. 



Coral branched, tree-like or fau-shaped ; branches from the stony 

 joints. Axis hard, articulated, composed of alternating portions of 

 hard calcareous and flexible horny black or brown matter. Bark 

 granular, with irregular-shaped calcareous spicules, smooth, external. 

 Polypo-cells very small, scattered over the whole surface of the bark. 



Isidinae, Kollil-er, Ic. Hist. p. 140. 



c2 



