REPORT ON THE REEF-CORALS. 107 
habit of growth is incrusting, and it spreads over and ultimately surrounds the object on 
which it grows. 
Locality. —Mactan Island, Philippines. 
2. Cyphastrea microphthalma (Lamarck). 
Astrea microphthalma, Lamarck, Hist. Anim. sans Vert., ii. p. 273, 1816. 
Cyphastrza microphthalma, Milne-Edwards and Haime, Cor., ii. p. 485. 
A small gibbous specimen, the growth of which has been much disturbed by 
parasites, presents some interesting varietal points. The columella is scarcely seen from 
without, and is but slightly developed; the cups are generally quite close, especially in 
the depressed parts, evenly rimmed with prominent and wide septa, which are much 
thinner at the wall than is shown by Milne-Edwards and Haime.’ 
Locality.—Mactan Island, Philippines. 
3. Cyphastrea aspera, n. sp. (Pl. IV. figs. 3-3a). 
Corallum incrusting, forming a thin layer. Epitheca very distinct at the margin. 
Calicles circular, nearly immersed, about 1°5 mm. wide, very deep, separated by interspaces 
equal to their own diameter; costze scarcely distinct, finely and obsoletely spinulose; wall 
nearly even with the surface. Septa extremely exsert, easily broken away, slightly thickened 
and very narrow, scarcely projecting into the fossa, forming a circle of high, rather delicate, 
narrow, cultriform plates at the margin of the calicles which give to the corallum a rough 
bristling aspect ; of three cycles, the last incomplete and very small; those of the first and 
second cycles indistinguishable in size from each other, but very unequal on opposite sides 
of the same calicle, granulated and subentire. Columella small or rudimentary. 
A small specimen of this interesting species was obtained, consisting of a thin, living, 
rather uneven layer, which has spread over an equally thin, dead layer. It differs con- 
siderably in appearance from the ordinary species of Cyphastrea, but seems to be 
connected with them by the Cyphastrea ocellina (Dana). Its general appearance recalls 
the Oculine, as mentioned by Dana for the Cyphastrea ocellina and Cyphastrea 
danx (= Astrea microphthalma, Dana). 
Locality.—Api, New Hebrides. 
4. Cyphastrea brueggemanni, n. sp. (Pl. IV. figs. 4—4«). 
Corallum incrusting at base and surrounding other bodies, forming in this manner 
large, rounded, unevenly globose masses, which are attached by a very small base. 
1 Ann. d. Sct. Nat., ser. 3, vol. x. pl, ix. fig. 5. 
