REPORT ON THE REEF-CORALS. 101 
5. Goniastrea quoy?, Milne-Edwards and Haime. 
Goniastrea quoy?, Milne-Edwards and Haime, Cor., ii. p. 447. 
Two fine specimens were collected. The species is very variable in many of its 
characters, and this can-be easily seen on different parts of the same specimen. ‘The 
calicles may be deep or quite shallow and open; the walls may be rather thick or quite 
thin ; the septa slightly exsert or included, appearing as narrow, oblique or erect lamelle; 
the pali may be small and scarcely distinct or thick and well developed, and the 
columella may be trabeculate or finely spongy. Septa of the fourth and fifth cycles are 
often developed, but the latter are small and scarcely distinct. 
Localities.— Banda; Somerset, Cape York, shore. 
6. Goniastrea gray, Milne-Edwards and Haime. 
Goniastrea gray, Milne-Edwards and Haime, Cor., 1. p. 447. 
This species is very close to Goniastrxa quoyi, but appears to be distinguished by 
the regularly deep calicles, by the closely crowded and extremely narrow, erect, numerous 
septa, by the thicker and stronger pali, and the more abundant spongy columella. The 
walls have a very even outline owing to the closely placed narrow septa. A small 
specimen was obtained. 
Locality.—Mactan Island, Philippines. 
7. Goniastrea coronalis, n. sp. (Pl. ILL. figs. 3-32). 
Corallum rather thin, explanate or slightly convex above, with the edges quite thin 
and trenchant ; the under surface covered with a strong epitheca and radially ridged up 
to the margin, showing the course of the calicles. Calicles unequal and irregular, 
generally pentagonal, often elongated and in process of division, the larger diameter 
being from 10 to 18 mm., many small calicles interspersed between the larger ones, the 
depth of the calicles from 3 to 5 mm. Many cups quite shallow. Three, four or five 
cycles developed, the last cycle in each calicle being incomplete and very small; septa 
narrow, rather thin, a little exsert, projecting but little from the wall, which is strong, 
moderately thick, and not rounded above; the edge of the septa very closely and finely 
denticulate with sharp, short and simple teeth. Pali very large, distinct, and broad, often 
twice as broad as the septa, elevated, leaving a central depression between them which is 
occupied by a scant trabeculate columella, the upper border of the pali strongly denticulate. 
This species resembles Goniastrea planulata in many of its characters, but is easily 
