﻿PAPILLATE MONTIPOR^. 105 



Massive, calicles and papillfe crowded, so that the whole surface is formed of tall nipples 

 separated by deep holes, thin reticular walls separating the deep calicles from one another, 



d, e,f. Tongatabu. J. J. Lister, Esq. 



Massive, papillse scattered, calicles about 1 mm. apart. 

 g. Great Barrier Keef. Coll. Saville-Kent. 92. 12. 1. 557. 



A massive specimen in which the edges creep round in close contact with the former 

 growths, tending to result in a globular mass. While some four edges can be counted, in the 

 centre of the stock the coenenchyma seems to have mounted continuously upwards without 

 break, 



h. Palm Island, Great Barrier Eeef. Coll. Saville-Kent. 92. 12. 1. 281. 



Two almost completely globular specimens, without apparent points of attachment, and 

 apparently free and rolled about on the tips of the papillse ; i is only 5 cm. in longest diameter. 



i. Fiji Islands. • F. M. Eayner, Esq. 



j. Torres Straits. Prof. A. C. Haddon. 



In addition to the above there is a fragment of an undulating explanate growth, 3 to 

 4 mm. thick, and showing all the typical characters ; the calicles are 2 mm. apart, and vary 

 greatly in size, owing to the appearance of young calicles among the large old ones. This is 

 a common phenomenon in this species, but not expected in an explanate growth. The papilla 

 are irregularly distributed round the edges, tending to fuse in short ridges. Epitheca 2 to 

 3 cm. from growing edge ; numerous small calicles on the under surface tend to be slightly 

 protuberant as thin, sharp-edged craters.* 



k. Albany Passage, Great Barrier Eeef. Coll. SaviUe-Kent. 92. 12. 1. 284. 



There are two more specimens showing essentially the same nipple-shaped elevations of 

 the interstitial reticulum. They differ, however, in various ways from the type, and are here 

 classed as varieties. 



Montipora verrucosa, variety a. 



Description. — Corallum a large rounded mass, somewhat flattened but humpy at the top. 

 The sides creep down and under the previous growth, tending to form a globular mass ; very 

 little free edge. 



The calicles are conspicuous but are more equally distributed than in the type, averaging 

 about their diameter apart. They are much smaller, • 75 mm. in diameter. The septa are 



* Mr. W. Saville-Kent has given, in his 'Great Barrier Eeef (chrom. plate viii. figs. 10, lOa, 

 106), a coloured representation of an explanate Montiporan with scattered papillse. The corallum is 

 a vivid green, the twelve bulbous tentacles of the polyp are purple. His identification of this coral 

 with Montipora verrucosa appears to be in accord with the conclusions here arrived at. 



P 



