REPORT ON THE REEF-CORALS. 13 
Madrepora palmata, Lamk. (= Madre- Porites levigata, Duch. and Mich. 
pora flabellum, Lamk.= »  superficialis, Duch. and Mich. 
Madrepora alces, Dana ,, subtilis, Duch. and Mich. 
= Madrepora cornuta, »  solanderi, Duch. and Mich. 
Duch. and Mich. = »  fureata, Lamk. 
Madrepora thomasiana, 5,  tncerta, Duch. and Mich. 
Duch. and Mich.). »  plumieri, Duch. and Mich. 
Porites astrwoides, Lamk. », valida, Duch. and Mich. 
In connection with this list, however, it must be stated that very many of the species 
have been founded by Duchassaing and Michelotti, who, as pointed out by Pourtales, 
have frequently described as new species slight varieties of well known and widely 
distributed forms. It is probable therefore that many of those enumerated are synonyms 
of old species, although the information at hand is not sufficient to determine the point 
with certainty. 
3. St. Vincent, Care VERDE IsLanpDs. 
Three species of true corals which are common to the West Indian reef fauna were 
collected. They comprise the following :— 
Astrea fragum, Esper. | Porites superficialis, Duch. and Mich. 
Porites guadalupensis, Duch. ‘and Mich. 
They form small rounded masses, bright yellow or whitish pink in colour, growing in_ 
the numerous rock pools which are exposed at low tide.’ 
4, Orr Barra GRANDE, BRAZIL. 
One species, Orbicella cavernosa, Esper, which is common to the West Indian reefs, 
was obtained at a depth of 30 fathoms. The occurrence of this definite Reef Coral in such 
a locality and depth is an extremely interesting fact. 
5. Stmon’s Bay, Care or Goop Hops. 
b) 
Two species were obtained :—Manicina areolata, L.; and Cladocora arbuscula, 
Lesr., at a depth of 10 to 20 fathoms. 
The latter species has been recorded already by Professor Moseley in the Report on 
the Deep-Sea Madreporaria, but it is included here for completeness. 
The occurrence of the common West Indian Reef-Coral, Manicina areolata, so far 
south is an extremely interesting fact, to which special reference will be made in the 
remarks on the thermal limits to distribution. 
1 Moseley, Notes by a Naturalist on the Challenger, p. 47. 
