﻿152 MADEEPOEARIA. 



and calicles. Between tlie taller protuberant calicles, ridges, plates, &c., the small tubercles 

 are lilvc distinct granules, scattered over all the interstices. They are minute, compact, bushy, 

 or frosted spherules of different sizes. 



This Montipore is unlike any other in the Collection. The stock appears as if formed of 

 several small fan-like growths, each growth due to the fusion of the fringing processes along 

 its outer edge. A few of the component fans are regular, others are distorted and crushed 

 together. One stalk is complete, and it is not more than 5 by 8 mm. thick : 5 mm. being 

 about the thickness of each fan. The irregularity in the protuberant calicles, the fringe of 

 processes pointing here and there, and the small grain-like tubercles dotting the interstices, 

 joined with the pecidiar method of growth, justify us separating this as a new species. 



a. "Warrior Island, Great Barrier Eeef. Coll. Saville-Kent. (Type.) 



128. Montipora solanderi. (PI. XXIX.) 



Madrepffra foliosa, Ellis and Solander {non Pallas), Zoophytes (1786) p. IGi, pi. lii. 

 Madrepvra foliosa (partim), Esper, Forts., i. (1797) Tafel 58 J, figs. 1 and 2. 

 Montipm-a foliosa, Briiggemann, Phil. Trans., clxviii. (1879) p. 597. 



(See prefatory remarks to 3f. foliosa, p. 156.) 



Description. — CoraUum a roughly circular bowl or dish-shaped mass of tliick (7 to 8 mm.) 

 fronds, usually broad, i.e. extending round half the circumference, but not deep, showing only 

 a slight indication to curl spirally. The growing margin is thin (2 to 3 mm.) but thickens so 

 rapidly on the upper surface that it looks as if the whole margin bends outwards ; the under 

 surfaces are not covered by an epitheca. 



The calicles are small, ■ 75 mm., inconspicuous, numerous, about 1 diameter apart, neatly 

 star-shaped, with well developed primaries, thin and slightly exsert ; one or two pronounced 

 directives ; traces of secondaries. On the under surface the calicles are scattered and like 

 small irregular punctures. 



Coenenchyma shows in section a thick, dense, streaming layer from which thickening layers 

 develop both upwards and downwards. The lower is denser, the trabeculffi stouter, and the 

 tubercles into which they run are shorter and more solid, often surrounding the polyp cavities 

 with dense protuberant rings. The trabeculse of the upper layer are larger, but straight and 

 stout and well marked ; they are joined by thin ladder-like series of junctions. The tubercles 

 of the upper surface are long, slightly feather-like, but with clear outliaes, crowded in all stages 

 of development, forming rings round calicles and ridges in aU. stages of fusion, the ridges 

 giving rise to excrescences and even to tall branches. This profusion of ccenenchyma on the 

 upper surface is also repeated irregularly on the under surface, where short tubercles are 

 frequently developed and the calicles often appear protuberant, while round knobs, ridges and 

 short branches occur. A level porous reticulum is everywhere ^'isible between the tubercles 

 and ridges. 



