REPORT ON THE REEF-CORALS. 67 
about 1 mm. in diameter or more, rather shallow, and separated by interspaces rather 
less than their diameter; the distal calicles elongated and irregular, rather larger, deep 
and very close, separated by very narrow walls. When strongly magnified they are 
seen to be very finely spinulous within, and in many of the apical cups the septa are 
very finely marked and represented by spinulous striations. The columella is scarcely 
developed, round, and spinulous. 
Loecality.—Samboangan, Philippines. 
7. Pocillopora danx, Verrill. 
Pocillopora favosa, Dana (non Ehrenberg), Zoophytes, p. 528, pl. 1. fig. 1. 
Pocillopora dane, Verrill, Proc. Essex Inst., vol. vi. p. 93. 
A small specimen of this species was collected. Except in the extreme apical calicles, 
the septa are represented by fine and often elongated spinules, which are also present on 
the scarcely distinct columella. 
Locality. —Samboangan, Philippines. 
8. Pocillopora solida, n. sp. (Pl. I. figs. 4-4d)/l0 me hots 
Corallum consisting of rather elongated, subarborescent, much divided branches 
which dichotomise regularly at intervals of about 15 mm., often divaricate ; they are 
nearly equal throughout, verrucose, subterete or slightly compressed, being about 15 mm. 
wide and 10 mm. thick, slightly more towards the base. The verruce are very short, 
very unequal, irregularly placed, rarely crowded, generally separated by spaces more 
than their own diameter; they consist usually of two, three, or four large cells, rarely 
more, which are often barely raised above the surface; they are not found on the 
summits of the branches except on those towards the basal parts, where they are often 
longer and more irregular ; they are absent on the basal part of the main stem and are 
more or less obsolescent on its upper portion and on the basal part of the smaller 
branches. Cells on the verrucee quite large, about 1°5 mm. wide, deep, circular, with 
very elongated spinules on the upper margin, the spinules of adjoining calicles being 
placed in rows and continuous with the septa within; between the verruce and on the 
basal parts they are neatly circular, rather deep, generally quite small, 0°5 to 0°75 mm. 
in diameter, rarely more, rather closely placed above but generally separated by spaces 
more than their own diameter, especially towards the basal parts; on the apex of the 
upper branches the cells are subpolygonal and very closely placed. The septa are very 
slightly developed, and, when the calicles are magnified, are seen as minutely spinulous 
striations, which are more distinct in the cells on the verruce, where the uppermost septa 
are quite distinct. Columella inconspicuous and rounded or quite absent. Ccenenchyma 
