REPORT ON THE REEF-CORALS. 191 
and branchlets in the same plane, which become quite free and somewhat divergent 
above. The fenestree between the coalescent branches are of very different sizes, but 
are small, and obsolescent towards the basal part which forms a solid mass. A large 
specimen from St. Thomas differs in being much more unevenly grown, with shorter and 
thicker branches. The surface is much more uneven, and the pores more conspicuous. : 
A third specimen, which was obtained at Bermuda, and which does not seem to differ 
essentially from this species, is peculiar in many respects. It consists of a few small 
branches growing on an old and broken black bottle, over which, within and without, the 
basal part of the ccenosteum has spread as a thin incrusting layer. The branches are 
rather unequally compressed, sometimes coalescing, and palmato-digitate above. The 
surface of the ccenosteum is of a delicate, reddish-brown colour, and is much more uneven 
than in the normal form. The cyclosystems are crowded over the surface, and the 
gastropores are very large. 
Very valuable and interesting remarks on the species have been made by Pourtalés,’ 
and he points out the great variation to which it is subject. A very good figure of the 
species is given in the Report on the Florida Reefs, pl. xx. 
Localities. —Bermuda ; St. Thomas, West Indies. 
2. Millepora carthaginiensis, Duchassaing and Michelotti. 
Millepora carthaginiensis, Duchassaing and Michelotti, Suppl. Mém. Cor. des Antilles, p. 102, 
pl. xi. fig. 6. 
A single large specimen, apparently referable to this species, was obtained. The 
branches and branchlets are small, slender, and parallel; extremely elongated, and very 
coalescent, forming broad lamine with narrow, elongated fenestree. Often the branches 
are free throughout all their length, and form long, rod-like, upright pieces. The cyclo- 
systems are very distinct, the gastropores being rather large and sunk in small, shallow 
depressions. Owing to these small depressions the surface is shghtly uneven. 
From the foregoing description it will be seen that this species, like the many others 
described by Duchassaing .and Michelotti from the West Indies, is very closely related to 
Millepora aleicornis, and it is very probable, as suggested by Pourtalés, that they are 
all but varieties of one and the same species. 
Locality.—St. Thomas, West Indies. 
3. Millepora murrayi, Quelch (Pl. VII. figs. 5—5e). 
Millepora murrayi, Quelch, Nature, 1884, p, 539. 
Ccenosteum consisting of dense clusters of broad and thin, compressed, frond-like 
branches, which are extremely coalescent, and broadly palmate at the ends. The fronds 
1 T}ustr. Cat. Mus. Comp. Zool,, No. iv. 
