285 



four or five longitudinal series at end of branches (Esper, t. 4 a. f. 4, 5, 

 see t. 1 1 . f. 2, bark). Cells sunken. 



* Tree-like, branched. 



1. Melit^a ochracea. b. m. 

 MelitcBa ochracea, Lamk. ; Meyen, Nov. Actą Leop. xvi. t. 29. 

 Jsis ochracea, Linn. ; Esper, t. 4, t. 4 a, t. 1 1, f. 1, 2, 3, with bark. 

 Corallium ruhrum, EUis, Phil. Trans. iv. 188. t. 3. 



** Flabelliform, reticulated. 



2. Melit^a aurantia. B. M. 

 Isis aurantia, Esper, t. 9. 



Melitcea retifera, Lamk. 

 India. 



3. Melit^a coccinea, Lamk. B. M. 

 M. Rissoi, Lamk. 



Isia coccinea, Solander, Z. t. 12. f. 3 (cop. Esper, t. 3 a. f. 5) ; 

 Esper, t. 16. 



4. MeLIT^A TEXTIFORMrS. B.M. 



Melitcea textiformis, Lamk. Pol. Flex. t. 19. f. 1. 

 Australia. 



5. Melit^a tenella. 



M. tenella, Dana, Exped. 683. 

 Sandwicb Islands. 



Fam. 4. Primnoad^. 



CoraI branched, branches forked or pinnate. Axis calcareous, 

 smooth, or slightly longitudinally striated. Bark formed of flat 

 scales. Polypiferous cells produced, covered with regularly disposed 

 imbricate scales. 



1. PRIMNOA. 



Primnoa, Lamx. 1812. 



Coral branched, tree-like, branches cylindrical, forked. Sark 

 formed of scales. Polypiferous cells ovate, clavate, dependent, co- 

 vered with two series of large convex imbricate scales, placed in 

 whorls of three round the branches. Aperture closed, with three 

 small pointed scales. 



* Coral tree-like and branched, branches forked. Cells ovate, bell- 

 shaped, in threes. Primnoa. 



1. Primnoa lepadifera, Lamx. B.M. 



Gorgonia lepadifera, Linn. ; Baxter, Opnsc. ii. t. 13. f. 10, So- 

 land. Zooph. t. 13. f. 1, 2 ; Johnst. B. Zooph. f. 37. 

 G. reseda. Palias. 

 North Sea ; Archangel ; Norway. 



