5 7 



The ribs are apparent, narrower than the furrows between them, usually with one row 

 of very fine spines on the edge, sometimes with granulations on the sides. There are large pores 

 in the intercostal furrows. The four cycles of septa are arranged in the typical way, sometimes 

 a rudiment of a fifth cycle is present. The septa are not exsert above the calicular margin. 

 As the septa project only very little into the calicular fossa, this is very wide. In this respect 

 it resembles Verrill's Coenopsammia manni. Vaughan (1907) gives a figure of a cotype of 

 Verrill's species, which shows very clearly the narrow septa and wide calicle, but not so the 

 figure of the specimen of Vaughan's collection. The septa increase downward very slowly in 

 breadth and join the columella. The septa of the first cycle have fine teeth on the edge and 

 are much granulated on the sides. The septa of the second cycle do not project as far as 

 those of the first cycle but have the same aspect. The septa of the higher cycles are much 

 smaller and with long teeth on the edge, sometimes they are represented only by a row of 

 teeth on the inner side of the wall. 



The columella is well developed, broad, consisting of twisted lamellae; in the bigger 

 calicles its length is about half that of the calicle, in smaller ones it is shorter, e.g., in a calicle 

 of 10X8 mm. it measures 5X3-5 mm.. The depth of the calicles equals their length. 



12. Dendrophyllia elegans nov. spec. (Plate VIII, fig. 9 and 10). 



Stat. 2S2. Anchorage between Nusa Besi and the N. E.-point of Timor. Reef. 1 ex. 



A cluster of corallites are situated on the top of a broken off stalk that is about 1 cm. 

 long and forms a part of the colony. One of the corallites is bigger than the others; it is the 

 initial corallite. four daughter-corallites are a little smaller, three other ones much smaller. The 

 corallites are connected only at their base, that being the place where new buds are formed, 

 judging from the place of the three little corallites. 



The initial corallite and the biggest newly formed ones are 20 mm. long, the three little 

 ones are only a few mm. long. The calicle of the initial corallite is 14 X n nim. wide near 

 the margin. The corallites increase in diameter from the base upwards. As the initial corallite 

 is surrounded by the newly formed ones, it is impossible to get the exact measures of its base. 

 One of the secondary corallites has a diameter of 7 X 6 mm. at the base and of 9 X 7 nim. 

 at the top. 



The principal costae, corresponding with the septa of the first cycle, are clearly recogni- 

 zable in the initial corallite, to a smaller extent also in the bigger daughter-corallites. These 

 principal ribs are broader and project more than the other ribs; they consist of irregularly 

 disposed, a little elongated granulae, between which are perforations. The other ribs consist of 

 a single row of granulations, they are very narrow. The rows of granulations get more and 

 more irregular towards the calicular margin, and the wall of the calicle is there very much 

 perforated, thin and very fragile. 



The septa are typically arranged in four cycles, a fifth one can be developed in some 

 systems. The septa of the first cycle are prominently exsert. They project for 2 mm. in the 

 calicular fossa. Their upper edge is nearly horizontal, then they fall steeply downwards. The 



109 



