362 FUNAFUTI ATOLL. 



with spinules ; the plates are about 0*4 mm. apart at the lip, and 

 0'5 mm. at the base of the wall. 



The calicles on the central region of the corallum are not so 

 large as those near the margin ; they are less prominent, with 

 but little sloping walls, and packed so closely together that the 

 echinulations are almost in contact at their apices. 



The corallites measure from 4 to 6 mm. in external diameter ; 

 the aperture is usually circular, and from 2 to 3 mm. across ; 

 frequently where the corallites are crowded, the aperture is elliptic 

 or narrow elongate, and twice as long as broad. 



The septa are in two cycles, with an incomplete third ; they are 

 narrow and ill-defined at the margin. Towards the base of the 

 fossa the primaries widen out and meet in the centre. 



Obtained on the lagoon reefs. 



ASTR^EOPOEA HIRSUTA, Bernard. 



Astrceopora hirsuta, Bernard, Cat. Madr. Corals, Brit. Mus., ii., 

 p. 94, pi. xxxiii., fig. 13. 



There are three examples referable to this species. 



The larger is 25 cm. long, 8 cm. broad, and 7 cm. thick. The 

 upper surface irregular in shape and almost divided into three 

 cushion-like masses ; the under surface is flattened, and a thin 

 layer extends a short distance along a dead colony of the same 

 species. 



The corallites are rarely raised above the rest of the surface ; 

 the aperture is about 2 mm. in diameter, the spaces between are 

 about the same, rarely more but frequently less. 



The septa are in two cycles, well defined at the margin, the 

 primaries, meeting below. 



The surface is closely echinulate ; the echinulse are usually 

 compressed, single-pointed, and about 045 mm. apart. 



The septo-costal and synapticular elements frequently combine 

 and form a reticulated lip round the apertures of the corallites. 



Reefs in the lagoon. 



MONTIPORA FOVEOLATA, Dana. 



Montipora foveolata, Dana, Zoophytes, U.S. Explor. Exped., p. 

 507. 



There are three specimens referable to this species, one of which 

 is a remarkably fine example, 28 cm. high and 26 cm. in diameter. 



