ANTIIOZOA HELIANTHOTDA. 



I. MILLEPORINA. 



Ehrenberg, Coral I. iles roth. Aleeres, p. 122. 



Fig. 41. 



23. PociLLOPORA,* Lamarck. 



Character. — Polypidom calcareous., fixed, plant-like, hranch- 

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

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

 almost obsolete . 



1. P. iNTERSTiNCTA, "-Cylindrical, with distant immersed 

 stars!''' Dr. Hibbert.f 



Madrepora interstiiicta, composita stellis immersis teretibus distantibus interstitio 

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

 .511. 



Hah. " A specimen, probably of this species, which I have seen, 

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



The Madrepora interstincta of Linnseus, probably synonymous 

 with the Pocillopora coerulea of Lamarck, is a production of the 

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

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



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



t 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 

 Hibhertii to two or three species of fish. 



