24 ELLISELLAD^. 



44. HEMICORALLIUM. 



Coral branched. Bark granular, even. Polype-cells conical, rather 

 prominent, distributed on the upperside of the branches. Growing 

 horizontally from the sides of rocks. Coral white. 



HemicoraUium, Gray, P. Z. S. 1867, p. 127. 



103. HemicoraUium Johnsoni. B.M. 



Bark yellow. 



Corallium Johnsoni, Grmj, P. Z. S. 1860, p. 394. 

 HemicoraUium Johnsoni, Gray, P. Z. S. 1867, p. 127, not fig. 



Hab. Madeira (Johnson). 



The specimen from Liverpool figured as the animal of this coral 

 (Proc. Zool. Soc. 1867, p. 126) is a fleshy Alcyonoid, parasitic on a 

 stony coral. 



Section IV. Axis solid, continuous, hard, cortieo-calcareous, sometimes 

 more or less hoi'uy andjlexihle at the small hranchlets. 



a. Bark thin, grantdar ; poly2)e-cells more or less prominent. . 



Fam. 14. ELLISELLAD^. 



Coral tree-like, generally furcately branched. The bark is granular, 



with a more or less distinct lateral groove on each side of the stem. 



Cells in series on the edges of the hranchlets. Axis cylindrical, 



tapering, calcareous. 



Gorgonellacees, Valenc. ; Mibie-Edw. <§• Haime, Corall. i. p. 182 ; 



Kolliker, Ic. Hist. p. 139. 

 EUiselladis, Gray, Proc. Zool. Soc. 1859, p. 489. 



A. Polype-cells scarcely prominent. 



1. JpNCELLA. Coral cylindrical, simple. 



2. Ellisella. Coral cylindrical, furcately branched. 



3. CxENOCELLA. Coral cyhndrical, branched, fan-Hke, the hranchlets 



from upper edge of branches. 



4. Phenilia. Coral tree-Kke ; branches subcylindiical, divaricated, 



sometimes coalescing. 



5. GoRGONELLA. Coral secund or reticulated. 



B. Polype-cells elonyate, prominent. 



6. ViMiNELLA. Coral subquadrangular, simple. 



7. K.ETICELLA. Coral netted. 



8. Verrucella. Coral branched ; branches much branched, slender, 



with conical polype-cells on the edge. 



9. Heliania. Coral tree-like, branches forked. Polype-cells in 



two, three, or four alternating series on the hranchlets. 



