REPORT ON THE REEF-CORALS. 31 
Fungia scutaria, Lamk. 
‘4, paumotensis, Stutchb. 
»  concinna, Verrill. 
»  dascus, Dana. 
Sandalolitha dentata, n. sp. 
Pavonia formosa, Dana. 
a pretorta, Dana. 
Pachyseris speciosa, Dana. 
Domoseris porosa, n. sp. 
ie solida, n. sp. 
x regularis, n. sp. 
Trochoseris stokes, Edw. and H. 
Cylloseris incrustans, 0. sp. 
Madrepora retusa, Dana. 
Madrepora danx, Verrill. 
. nasuta, Dana. 
“ paxilligera, Dana. 
Rs speciosa, N. Sp. 
. cytherea, Dana. 
ms surculosa, Dana. 
. laxa, Lamk. 
Me paris, v. sp. 
Montipora aspera, Verrill. 
A: papulosa, Lamk. 
Porites arenosa, Esper. 
»  latistellata, n. sp. 
Synarea convexa, Verrill. 
Napopora irregularis, n. sp. 
ie plantaginea, Lamk. Millepora nodosa, Esper. 
= virgata, Dana. * gonagra, Edw. and H. | 
“The most abundant reef-forming species on the reefs about Papiete are the species 
of Pavonia. With them are associated in quantity the species of Porites, the Madrepora, 
and the Montipora. The Astrxa (Leptastrea) occurs in very small masses, and contri- 
butes no appreciable part of the reef mass. The Fungias are so abundant, lying scattered 
everywhere on the surface of the reef in a few inches of water only, that their share here 
in the reef-formation must be no inconsiderable one. The closely-set vertical plates of 
the Pavonia are better adapted than any other for catching and holding the various 
débris of which the bulk of every coral-reef is composed. The Pocilloporas are abundant, 
but are not here, as at Hawai, the leading and principal form.” ’ 
The following eleven species are new :— 
Pocillopora solida. Domoseris regularis. 
Fungia rugosa. Cylloseris incrustans. 
Sandalolitha dentata. Madrepora speciosa. 
Domoseris porosa. - paris. 
ae solida. Porites latistellata. 
Napopora irreqularis. 
Of these, four species, Sandalolitha dentata, Domoseris porosa, Cylloseris incrustans, 
and Napopora wrregularis, are types of new genera. 
The following nineteen species are recorded for the first time from Tahiti :— 
! Moseley, MS. Diary. 
