SUPPLEMENT. 697 



5. ALLOPORA OCULINA. (Ehrenberg.) 



A. pumila, ramosa, compressa, subftabellata, glabra, ramis dichotomis, 

 1^-2'" crassis, obtusis. Corallum cellis raris, sparsis, vix prominulis, 

 distincte 5-9-radialis, s&pius radiis 7. 



Small, ramose, cornpfessed, subflabellate, smooth; branches dichoto- 

 mous, li to 2 lines thick, obtuse. Corallum having the cells 

 few, scattered, scarcely prominent, distinctly 5 to 9-rayed, mostly 

 7-rayed. 



Ehrenberg adds to this description the remark that it differs from 

 the rosea in its fewer rays, the number in that species being nine to 

 fifteen. 



Ehrenberg, op. cit., Fam. xvii. 



6. ALLOPORA NORWEGICA. (Fabricius.) Dana. 



A. compressa, fere Jlabellata, ramulis brevibus; subcrassis. Corallum 

 km, caliculis obsoletis, cellis minutis, orbiculatis out oblongis, lamettis 

 vix minima exsertis, subcequis. 



Compressed and almost flabellate, branchlets very short and rather 

 stout. Corallum smooth, calicles obsolete, cells minute, circular, 

 or oblong, lamellae scarcely at all exsert, nearly equal. 



Norwegian seas. 



This small species has till lately been made identical with the 

 Oculina virginea. Its cells are very much smaller, and not promi- 

 nent, or scarcely at all so. The number of lamellae within the cell is 

 stated at eighteen or more. It is referred to this genus with doubt. 



Pontoppidan, Norg. Naturl., i. 258, No. 10, tab. 14, fig. G., or English translation, 

 London, 1754, p. 159. " Flat, with several pretty indented shoots, about a finger in 

 length, and half as broad, but appears to have been much larger before it was detached 

 from the body of the plant, which, when entire, must make a very beautiful appearance." 



Strom, Sondm., i. 144. Norske Vidensk. Selsk., iv. 56, No. 11, tab. 8, fig. 1-4. 



Madrcpora virginea, Miiller, Prod. Zool. Dan., 3041. 



Madrepora norvagica, O. Fabricius, Oken's Isis, 1 845, p. 52. 



175 



