MALAYAN PORITES, 167 
The calicles are “very small” (1:25 mm.), and shallow, crowded, polygonal; walls thin 
and very porous ; septa twelve, imperfect, open, trabecular; pali five or six, well developed ; 
columella very small and tubercular. 
This is the original description of a Porites, probably from the Loo-Choo Islands in the 
China Sea. It is too meagre for purposes of identification. 
The specimen from Honolulu called P. tenwis by Mr. Quelch, has been described above 
as P. Sandwich Islands 8. 
There has been a tendency to give the name “ tenuis” to all Porites with thin membranous 
walls. 
165. Porites China Sea (192. (P. Sinensis secunda.) 
[Hong-Kong, coll. Wm. Stimpson ; 2 ] 
Syn. Porites sp. Verrill, Proc. Essex Inst. v. (1886) p. 25. 
Description.—The corallum is glomerate ; said to be too young for identification. 
The calicles are polygonal, rather deep; the walls well developed, angular, acute ; septa 
well developed ; six strong pali; deep open fossa ; no columella. 
This coral was said to “approach Rhodarea.” This expression, without figures to explain 
it, has now lost its meaning. 
166. Porites China Sea (ig8. (P. Sinensis tertia.) (Pl. XXV. fig. 9.) 
[Macclesfield Bank, 30-34 fathoms, coll. Bassett-Smith ; British Museum. | 
Description.—The corallum is explanate, thin, horizontal, and, except for its attachment 
by one of its edges, free upon a stout supporting epitheca. The corallum is slightly wavy, 
but its surface is raised into warts and papilla. The edges are very sharp and thin, 
0-5 mm.; near the attachment the stock may be 6 mm. thick. 
The calicles are about 1 mm. across, tend to be arranged somewhat close together in rows, 
the rows being about 1 mm. apart, the intervening space bulging upwards. Their rounded 
walls rise here and there into papilla which may run together into ridges, or more frequently 
fuse to form warty excrescences of different heights up to 3-4 mm. The texture of the wall is 
flaky, but the top is covered with the frosted ends of flakes and the tips of trabecule, appearing 
as branching granules in the process of expanding into new flakes. The septa begin as short 
tongues with jagged edges sloping down towards the fossa. They only lengthen and meet 
deeper down and at different levels. The pali are conspicuous, and rise as a ring of rods from 
lower septa ; they consist of the five principals, with here and there a smaller dorsal directive 
palus, The interseptal loculi are well developed, and gashed back among the wall flakes ; they 
are very irregular, a few of them deep, but lower layers of flaky septa with obscured radial 
