ISID.E. 



19 



98. Keratoisis Grayii, B.M. 



Keratoisis Grayii, Perceval Wright, in Ann. fy Mag. Nat. Hist. 1868, 

 ii. p. 427, 1869, iii. p. 24, fig. 



Ficr-6. 



Fig. 7. 



Fig. 6 represents a portion of the main axis, deprived of coenenchyma 

 and of nearly all its polypes. 



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

 Fig. 8. A polype magnified. 



Hab. Lisbon (Bocage). From a depth of about 400 fathoms, off 

 the coast near Setubal in Portugal. 



Fam 12. ISIDJE. 



Coral branched, tree-like or fan-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. 

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



Isidinse, JBGiffiker, Ic. Hist. p. 140. 



c2 



