1898.] COEALS OF THE SOUTH PACIFIC. 261 



the dredge and probably from the same colony. The species, 

 though distinctly belonging to the subgenus Odontocyathus, differs 

 from all its previously described species in the extremely large im- 

 mersed corallites found on its main branches and under surface. 



11. Madbepoba sxjbcttlosa Dana (97). 



There are two specimens of this species in the collection, which 

 are prostrate in form and have the branches on the under surface 

 completely fused along their length except at the extremities. 

 The under surface, close to the pedicle, is bare even of completely 

 immersed corallites. 



Funafuti ; lagoon shoals. 



12. Madeepoea latistella Brook (107). 

 Funafuti. 



13. Madeepoea srffEis-sis Brook (110). 



I have referred a specimen 16 cm. in diameter "to this species. 

 The colony is very regularly incrusting, with short branches 

 4-6 mm. in diameter on the upper surface, often fused with one 

 another. Towards one edge some thicker branches project 

 horizontally ; they are very regularly covered with short branches 

 on their upper surfaces, but on the sides have a few tubular 

 corallites and on the under surface immersed calices. The surface 

 of the corailum is very regularly echinulate, in some places striate. 



Funafuti ; outer reef. 



14. Madeepoea hebes Dana (128). 

 Eotuma ; 4 fathoms. A fragment. 



15. Madeepoea moxticuxosa Brook (130). 



A small specimen 17 by 10 cm. was obtained. The corailum is 

 3'5 cm. thick where it was broken off from a larger mass and 

 about 1 cm. at the edge. The upper surface is covered by low 

 subconical prominences -o-l'S cm. high. The edge is slightly 

 lobed and crowded with subequal, low, thick-walled corallites, 

 among which the axial can scarcely be distinguished. 



Eotuma ; outer reef. 



16. Madeepoea htspida Brook (132). 



The specimen, which consists of one thick, somewhat rounded 

 branch about 26 cm. long, corresponds very closely in all respects 

 with the type. It is 7 cm. thick at the base, and evidently grew in a 

 semi -recumbent position ; the under surface, where it is not dead, 

 is smooth and has a few scattered immersed corallites. 



Eotuma ; outer reef. 



17. Madeepoea sectjeis Dana (133). 

 "Wakaya, Fiji ; outer reef. 



