REPORT ON THE REEF-CORALS. 65 
scarcely compact even at the base, thus giving a very light texture to the corallum; the 
spinules of the surface are very fine, long and sharp. Though apparently so distinct 
from the ordinary form of the species, it is impossible to separate it, since a large specimen 
from Amboina furnishes more or less intermediate characters between it and the more 
commonly occurring form. It may, however, be distinguished as the Pocillopora acuta, 
var. fragilis. 
The Pocillopora ramiculosa, Verrill, does not seem to be distinct from this species. 
Localities.—Banda ; Amboina ; Mactan Island, Philippines. 
2. Pocillopora paucistellata, n. sp. (Pl. I. figs. 3-3). 
Corallum ramose, lax ; consisting of few rather thick, terete or subterete, elongated, 
spreading branches, more or less prostrate and divided, which diminish gradually in size 
and give off at intervals comparatively few, small, subacute, short branchlets. Calicles 
large, about 1 mm. or more in diameter, very shallow and open, circular or slightly 
oval, never crowded even at the apical parts, separated by broad interspaces which are 
not marked by lines surrounding the calicles. Septa absent or quite indistinct even 
when the calicles are magnified. Columella absent, the bottom of the cup being finely 
spinulous and flat or subconcave. Surface often nearly smooth, unevenly marked by very 
short and rudimentary spinules, which are more distinct at the edge of the calicles, 
ccenenchyma extremely compact throughout. 
This species resembles generally the Pocilopora acuta, but differs from it in its much 
more lax and elongated habit, in its distant and shallow cells, which are never crowded 
even at the apex, and the absence of septal markings and of a columella, and in the 
very short and rather distant spimules of the surface, which consequently appears almost 
smooth. 
Locality.—Ternate. 
3. Pocillopora suffruticosa, Verrill. 
Pocillopora suffruticosa, Verrill, Bull. Mus. Comp. Zoél. Cambridge, U.S.A., vol. i. p. 60. 
A large and interesting specimen was obtained which agrees well with the short and 
incomplete description of Verrill. The clump is densely branched with many large, 
clustered, elongated, subterete stems, which frequently divide and subdivide, the resulting 
branches being very proliferous throughout their whole length, and crowded with short 
branchlets. The calicles are small, 0°5 or 0°75 mm. wide, circular or oval and rather deep, 
separated by spaces less than their diameter ; the septa are developed, and in the calicles 
on the branchlets are distinctly seen, when the calicle is magnified, as finely spinulous 
lamellee, which are less marked in the calicles on the main branches; the upper and 
lower septa in each cup slightly enlarged. Columella small, rather prominent. 
(ZOOL. CHALL, EXP.—PART XLVI.—1886,\ Zz 9 
