10 THE VOYAGE OF H.M.S. CHALLENGER. 
Meandrina strigosa, Dana. Astrea coarctata, Duch. and Mich. 
% sinuosissima, Edw. and H. Siderastrea galaxea, Ell. and Sol. 
: labyrinthica, Ell. and Sol. Agaricia fragilis, Dana. 
Diploria cerebriformis, Lamk. | Porites clavaria, Lamk. 
Astrea ananas, Ell. and Sol. | Millepora alcicornis, L. 
Millepora ramosa, Pall. 
The two species of Millepora are very abundant, and contribute largely to the reef 
formation. While some species, such as the great “ Brain-Coral ” (Diploria cerebriformis), 
which is conspicuous at the bottom as a bright yellow mass, appear to prefer to grow 
where the water is lighted up by the sunshine, other species, such as the Millepora 
ramosa and Isophyllia dipsacea, seem to thrive best in the shade. One species, Agaricia 
fragilis, which forms very thin and fragile plate-like lamine, which are, when bleached 
white, almost the most beautiful of corals, occurs growing in colonies in great abundance 
in water from a foot to a fathom in depth inside small caverns.’ 
The genera Astrea (favia) and Meandrina are for the first time recorded with 
certainty from this locality ; while the species which are new to the fauna comprise :— 
Oculina coronalis. Isophyllia marginata (?). 
»  Speciosa. Mexandrina strigosa. 
Tsophyllia fragilis. i sInuosissima, 
A australis. és labyrinthica. 
" cylindrica. | Astrea ananas. 
know. rs, coarctata. 
Millepora ramosa. 
Of these the Lsophylha fragilis (= Mussa fragilis, Dana), and the Meandrina laby- 
rinthica were recorded by Dana as being found at Bermuda, in his Report on the 
Zoophytes of the United States Exploring Expedition ; but both species have since been 
omitted from his list of the Bermuda Corals (Cor. and Cor. Islands, p. 114). They are 
therefore mentioned here as being found for the first time. 
With the exception of Oculina coronalis (new species) and Oculina bermudensis, 
which at present are only known from Bermuda, the species are all West Indian and 
are such as one would expect to find. It is, however a noteworthy fact that no repre- 
sentative of the genus Madrepora is known to occur at Bermuda, although the three 
extremely variable species, Madrepora palmata, Madrepora cervicorms and Madrepora 
prolifera, are perhaps the most abundant, if not the most characteristic of the Reef-Corals 
of the West Indian Islands. It is possible that the genus does occur on the reefs, though 
it may be taken for granted, from the absence of representative forms in the collections of 
the “ United States Exploring Expedition” and of the Challenger, that the specimens are 
* Moseley, Notes by a Naturalist on the Challenger, p. 27. 
