53 



5. Dendrophyllia aróuscula nov. spec. (Plate VIII, fig. 6). 



Stat. 260. 2.3 miles N. 63 W. from the North-point of Nuhu Jaan, Kei-islands. Depth 



90 meter. 2 ex. 

 Stat. 277. Kulewatti-(Sollot-)bay, Dammer-island. Depth 45 meter. 1 ex. 



Colony dendroid with the branches in all directions. The abundantly branched specimen 

 from Stat. 277 is 8 cm. high. The specimens from Stat. 260 are branched only once or twice 

 and are 7 and 6 cm. high; the latter is broken off. So the species seems not to be a very large 

 one. Usually there are two branches opposite one another, but often there is only one branch. 

 Budding takes place near the calicular margin. The living soft tissue extends to about 1 cm. 

 from the calicular margin; the surface of the branches is dead, being covered by Bryozoans, 

 Serpulids, etc. The mainstem of the specimen from Stat. 277 is 1 cm. thick, getting thinner 

 beyond the first branches; in the two specimens from Stat. 260 the mainstem has the same 

 thickness as the corallites, and only the base is enlarged. 



The corallites are thinner near the base than near the calicular margin, e.g. respectively 

 4 and 6 mm. in diameter. The length of simple corallites without buds is nearly 12 mm., often 

 it is less, sometimes more; the longest simple corallite is 22 mm. long. The ribs are rectilinear 

 to the base of the colony, slightly prominent and thickly covered with very fine granulations. 

 In the intercostal furrows rows of perforations are present as far as the living tissue extends ; 

 beyond that area there are no perforations. There is no epitheca. 



Septa in four cycles. Those of the first cycle are larger than the others and slightly exsert 

 above the margin of the calicle. Their edge is entire and they are covered with granulations 

 arranged in rows parallel to the upper edge of the septum, thus förming an angle with that 

 part of the edge that descends perpendicularly in the calicular fossa. All the septa are thin 

 and spongy except near the margin of the calicle. The septa of the second cycle have also 

 the margin entire, but they do not project as far as those of the first cycle in the fossa. The 

 septa of the third cycle are very small ; those of the fourth cycle have a dentate edge and 

 unite in front of the septa of the third cycle. The outer septum of the fourth cycle is always 

 larger than the inner one. 



The columella is well developed, trabecular and prominent. The depth of the calicle 

 is 4 mm. at most. 



6. Dendrophyllia axifuga M.-Edw. et H. (Plate VII, hg. 1). 



Dendrophyllia axifuga Milne-Edvvards et Haime 1848 

 Dendrophyllia axifuga Milne-Edwards 1S60. 

 Dendrophyllia axifuga Quelch 1886. 



Stat. 299. Buka- or Cyrus-bay, South-coast of Rotti-island. Depth 34 meter. 3 ex. 

 Stat. 301. Pepela-bay, East-coast of Rotti-island. Depth 22 meter. 4 pieces apparently 

 belonging together. 



The method of branching is very typical for this species. The simple corallites are 

 cylindrical, sometimes 3 cm. long, usually shorter. The budding takes place at the edge of the 

 calicle, one or two buds are formeel at a time and always at the outer side of the calicle, i. e., 



