119 



not quite so high as those of the second cycle, are larger than 

 these and meet in front of thera so as to exclude them from the 

 columella. The poiut of uniou of the tertiary septa is very con- 

 spicuonsly marked by a large, high, V-sbaped paliform lobe. 

 Those of the fourth cycle, though much the smallest, descend 

 deep into the calicle. 



The columella consists of two or three contorted granular pro- 

 cesses fused together ; superficially it unites with the bases of the 

 pali, and much deeper down it may unite with the primary septa. 



Height of the corallum 8 millim. Diameter of mouth of calicle 

 6.5 to 7 millim. 



4. Citharocyathus venustus, n. sp. 



Differs from the preceding species in the following characters 

 which are quite independent of age: 



The conico-cylindrical corallum is slenderer and more elongate. 



The septa of the first three cycles are strongly exsert. 



The septa are much smoother. 



Height of the largest specimen 10.5 millim.; diameter of mouth 

 of calicle 6 millim. 



5. Deltocyathus magnificus var. Suluensis nov. 



These six specimens resemble Deltocyathus magnificus Moseley 

 in everything except that the septa of the fifth cycle, instead 

 of uniting with one auother over those of the fourth, are either 

 free in all their extent or merely touch those of the fourth. 



6. Odontocyathus stella, n. sp. 



Corallum flat, star-shaped owing to the extreme length and 

 exsertion of the septa and costae of the first cycle. 



The basal wall is covered with fine discrete granules : there is 

 a central scar, from which six strong costae radiate like the spo- 

 kes of a wheel: other costae exist only at the edge of the hex- 

 agonal disk. 



Septa in six systems and four cycles, with traces of a fifth. 



