55 



8. Dendrophyllia chrenbergiana (M.-Edw. et H.). (Plate VII, fig. 3 and 4). 



Tubastraea coccinea Lesson 1834. 



Coenopsammia Ehrenbergiana Milne-Edwards et Haime 1848. 



Coenopsammia Ehrenbergiana Milne-Edwards 1S60. 



Conopsammia Ehrenbergiana Klunzinger 1879. 



Dendrophyllia ehrenbergiana Brüggemann 1879. 



Dendrophyllia ehrenbergiana Ridley 18S3. 



Dendrophyllia coarctata Duncan 1886. 



Coenopsammia ehrenbergiana Koch 1886. 



Coenopsammia ehrenbergiana Ortmann 1S89. 



Coenopsammia ehrenbergiana Marenzeller 1907c. 



Stat. 231. Arhbon. Depth 40 nieter. 2 ex. 



VVith some hesitation I identified these specimens as belonging to this species. The 

 description of the specimens that I have at hand is as follows : 



The corallum is inerusting, the expanded base is fonned only by the initial corallite and 

 the tvvo first formed by budding. The arrangement of the cylindrical corallites is a very regular 

 one; they are placed symmetrically in regard to the initial corallite, and so there are always 

 two corallites of the same age. Budding is basal. The height of the colony is 47 mm. and the 

 initial corallite is 16 X 14 mm. wide at the calicular margin, surpassing in this respect the 

 measures given by Klunzinger. 



The ribs are clearly visible, running straight to the base. They are narrower than the 



intercostal furrows and connected by horizontal trabeculae across these furrows. They have one 



row of fine spines on the edge. The wall is much perforated in the furrows. 



Septa not exsert, thin. The arrangement of the septa in five incomplete cycles 



is shovvn in the diagram (fig. 7). Septa of the first cycle gradually getting broader 



from the margin downwards; the undermost half descends perpendicularly 



towards the columella. The maximum breadth of these septa is about one- 



Fig. 7. 



third the diameter of the calicle. Their margins are entire; the septal face 



possess delicate striae parallel with the edge and very few granulations. The septa of the 



higher cycles have the edge more or less toothed. 



The length of the spongy columella is about one-third that of the calicle. The depth 

 of the calicle is about equal its length. 



*g. Dendrophyllia coccinea (Ehrb.). (Plate VIII, fig. 21). 



Oculina coccinea Ehrenberg 1834. 



Dendrophyllia semiramea de Haan secunduin de Blainville 1834. 



Dendrophyllia coccinea Dana 1 846. 



Conopsammia coccinea Klunzinger 1879. 



Lobopsammia robusla Bourne 1905. 



Coenopsammia coccinea Marenzeller 1907c. 



Japan. 1 ex. — Japan. Leiden Mus. 1 ex. 



This inerusting species can form rather big colonies; the specimen in the Museum at 

 Amsterdam measures 18 X ll cm - and consists of a great number of corallites. Budding takes 



107 



S1BOGA-EXPEDITIE XVI i'. 8 



