1898,] coBALS or the south pacific, 267 



4. MoNTiPOEA PEOFiTNDA Bernard (137). 

 Funafuti ; lagoon, 



5. MoKTiPOEA CALicuLATA Dana (41), 

 Var. piriforynis Bernard (pp. 59 & 178). 

 Funafuti ; lagoon. 



6, MoNTiPOEA SAXEA Bernai'd (139). 



Besides the two specimens in the British Museum, there is a 

 third specimen at Cambridge, which appears to be the free end of 

 a massive block. 



Its edges are perfect, about 3 mm, thick, either creeping over a 

 much-corroded substratum of the same species of coral, or free for 

 2-3 mm., and closelj'- followed by a well-developed epitheca. 



Funafuti ; lagoon. 



7, MoNTiPOEA TEEETJCOSA Lamarck (80). 



On one specimen a colony of Pocillopora suffruticosa has settled. 

 Funafuti; lagoon. 



8. MoNXiPOEA 1>'C0GNITA Bernard (109 & p, 181). 



This species grows in large, generally horizontally spreading 

 masses, sometimes a metre or more in diameter, with a broad 

 attachment in the centre. The edges are often free for 30 cm, or 

 more, but occasionall\' supplementaiy attachments are formed to 

 the rock beneath. The upper surface, especially over the central 

 point of attachment, is studded with nodules, 3-6 cm. high, often 

 dead at their summits. 



Funafuti ; 0-7 fathoms, extremely common both in the fissures 

 of the outer reef and on the shoals within the lagoon. 



9, MoNTiPOEA GEAKCFEEA Bernard (141), 

 Funafuti ; lagoon. 



V. Genus Poeites, 



Porites {pars), Lamarck, Hist. Anim. sans Vert. ii. p. 267 (1816). 



Pontes, Duncan, Eev. Madrep. p. 187. 



There are 45 specimens of this genus in the collection, some 

 fragmentary. I have been able to refer 38 of these to 9 species, 

 the variations in which I have carefully recorded. Of these 

 6 species seem to me to be new, and I have redescribed one old 

 species (P. arenosa) and added two varieties to it, I have had the 

 advantage of comparing my specimens with the ' Challenger' types 

 in the British Museum ; these seem to have been described rather 

 hastily, and at least two from worn specimens, the characters of 

 the calices of which are rather obliterated. 



The youngest colony in the collection, which I have not referred 

 to any species, has 9 calices in 3 rows. The massive colonies 



