REPORT ON THE REEF-CORALS. 151 
gradually diminishing to a blunt end, which is often crowned by two or three branchlets ; 
angle of branching acute ; branchlets narrowly subconical. Terminal calicles rather large, 
from 3 to 4mm. wide, not prominent, with much thickened edges ; star very distinct, with 
six large and six small septa. Lateral calicles large, crowded, erect, broadly dimidiate or 
spout-shaped, presenting a more or less crescentic outer margin, which is very thick and 
porous and very much broader than the basal part of the cup; star very distinct, of 
twelve well-developed septa, two of which are very large ; length of calicles about 3 mm., 
often less, width at the margin as much; many calicles are quite small and are inter- 
spersed among the prominent ones, and on the under surface of the branches all the 
cells become smaller and shorter. Ccenenchyma reticulated and more or less porous ; 
surface reticulate and echinulate, becoming striated on the cups. 
This species is readily recognised by the characters of its calicles, which give a very 
striking appearance to the corallum. As the result of the narrowing of the basal part 
of the cups, where they join the branches, the aperture of the cell into the branch is 
very small. Only a single large specimen was obtained. Its closest ally seems to be 
Madrepora nobilis. 
Locality.—Samboangan, Philippines. 
9. Madrepora robusta, Dana. 
Madrepora robusta, Dana, Zoophytes, p. 475, pl. xxxix. fig. 3. 
Only two fragments of this species were obtained. The greater number of the 
branchlets taper much more gradually to a point than is shown in Dana’s figures. 
Localities. —Kandavu and other reefs, Fiji. 
10. Madrepora danzx, Verrill. 
Madrepora deformis, Dana (non Michelin), Zoophytes, p. 484, pl. xliii. fig. 1. 
55 dane, Verrill, Bull. Mus. Comp. Zoél., Cambridge, U.S.A., vol. i. p. 41. 
Two very fine specimens of this species were obtained. The description given by 
Dana requires amending in several particulars, for evidently it was founded on a rather 
small specimen. The chief branches are often simple, especially the shorter ones, but on 
attaining a height of about 10 cm. or more they become very proliferous at the apex, 
and often as many as nine small branchlets spring therefrom, while the basal portion is 
generally destitute of such branchlets, and is only crowded with the proliferous calicles 
which are found over the entire corallum, and which give it a very rough appearance. 
Although many of the thick branches are obtuse at the apex, yet very many taper almost 
to a point, as is shown in many parts of Dana’s own figure ; and the small branchlets are 
generally rapidly tapering. The lateral coalescence below of many of the large branches, 
