ANTHOZOA HELIANTHOIDA. 



I. MILLEPORINA. 



Ehrenberg, Corall, des roth. Meeres, p. 122. 

 Fig. 41. 



23. POCILLOPORA,* Lamarck. 



CHARACTER. Polypidom calcareous, fixed, plant-like, branch- 

 ed or lobed : Cells scattered over the whole surface, distinct, 

 sunk in little fosses, obscurely stellate, the lamella narrow and 

 almost obsolete. 



1. P. INTERSTINCTA, " cylindrical, with distant immersed 

 stars." Dr. Hibbert.f 



Madrepora interstincta, composita stellis immersis teretibus distantibus interstitio 



punctato, Mull. Zool. Dan. prod. 252. Pocillopora interstincta, Flem. Br. Anim. 



511. 



Hob. " A specimen, probably of tbis species, which I bave seen, 

 was obtained by Dr. Hibbert, in Zetland," Fleming. 



Tbe Madrepora interstincta of Linnaeus, probably synonymous 

 with tbe Pocillopora cserulea of Lamarck, is a production of the 

 Indian ocean, and it is reasonable to besitate before we admit it 

 amongst tbe natives of the Zetland sea. There may be an error in 



* From pocittum, a little cup, and porus, a pore. 



f Samuel Hibbert, M.D., the author of a " Description of the Shetland Islands," 

 4to. Edin. 1822 ; and of many geological essays in our Journals and Transactions. 

 To commemorate his services in fossil ichthyology, Agassiz has given the name 

 Hibbertii to two or three species of fish. 



