﻿102 MADEEPOEAEIA. 



anastomosing reticulum which swells everywhere above the level of the apertures of the 

 caUcles. At irregular distances the cceneuchyma rises up into great rounded or thick 

 flattened papHlEe, very much larger than the interstitial spaces, averaging 5 mm. in height 

 and 4 in tliickness. The tops of these papillte are always smooth and round. They may flow 

 together to form complicated ccenenchymatous excrescences nearly 1 cm. high. The papiUae 

 are entirely free from calicles ; where, however, several flow together and raise the level of 

 the corallum, calicles may appear in the angles between them. This flowing together tends 

 to form the lobate prominences on the corallum, on the sides of which calicles appear. 



There is a large and very beautiful specimen of tliis coral from Port Denison. It is a 

 wavy horizontal growth, 32 cm. across in longest diameter, with edges mostly free but here 

 and there encrusting. A part of it is intertwined with another encrusting Montiporan 

 (if. flammans, p. 76). The papillse are entirely confined to the upper surface ; the under 

 surface is a smooth reticulum of varying density, thickly strewn with inconspicuous calicles 

 opening level with the surface of the crenenchyma, and more symmetrical in the development 

 and radiation of the septa than those on the upper surface. These calicles even appear on the 

 pendent rootlets and downward streamings of the cceneuchyma. In the wider valleys between 

 the papillas the interstitial spaces are, as a rule, markedly convex, reminding one of Dana's 

 type " planiuscula." 



An objection to identifying this with Dana's Manoiwra hiberculosa from Fiji might 

 perhaps be seen in the fact that the latter was massive and encrusting and not explanate. 

 One specimen indeed was said to be 3 inches by 4 surface measurement, and 2 to 3 inches 

 thick, i.e. clearly a massive growth. But the same difficulty occurs in other cases, e.g. in 

 M. verrucosa, (see next page) ; what is said there applies equally well here. 



Dana has a coloured figure of a contracted polyp of a bluish colour on a brick-red 

 ground. 



a. Port Denison. CoU. SavOle-Kent. 



There is also a smaller specimen of a bright yellow colour, with smaller and more regular 

 papillfe, which, if not specifically identical with the above, is certaiuly allied to it. It shows 

 nearly all the same features, even the pendent rootlets with calicles on the under surface. It 

 differs, however, in the interpapLllar surfaces being concave instead of convex, and in the 

 apparent tendency of the calicles to open on the sides of the papillae, though rather low down. 



h. Macclesfield Bani, China Seas, Lords of the Admiralty. 



13-32 fathoms. 



