﻿1% MADEEPOEAEIA. 



a. A large irregularly branched specimen from Tongatabu, which appears to me to come 

 very near to Knorr's figure, on which the type was founded by Lamarck. I know of no other 

 Montipore covered with more or less smooth rounded knobs full of calicles such as is shown 

 in that figure. The specimen itself seems to have been built up by successive encrustations. 

 As any jportion dies, it is grown over by a thin layer, the tips of the branches being carried higher 

 by the surging up of the coral into small thin lobes not unlike those of the next specimen. 



h. A smaller branched stock, the branches being thinner and more symmetrically 

 cyliirdrical. This condition may be due to the fact that the stock is young, whereas a is 

 older and has been gnarled and knobbed by successive encrustations. 



«, h. Tongatabu. J. J. Lister, Esq. 



Three encrusting masses of the same which have not formed branches. Edges thin, 

 sometimes free and supported by an epitheca. 



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



An irregular clump of lobate branches. 

 /. Eocky Island, Great Barrier Eeef. Coll. Saville-Kent. 



A great, solid, castellated mass, towering upwards irregularly for some 50 cm. or more, 

 and showing the essential characters claimed for the type. The knobs are, however, not so 

 rounded or distinct, h is a fragment of the same, fitted into its place. 



g, h. Lacepede Island, North-West Australia. Coll. SaviUe-Kent. 



A portion of a large, horizontal, explanate specimen, which appears to be either a young 

 stage of g, or else a horizontally growing edge of a large stock. The whole upper surface rises 

 up into a number of upright lobate processes. These are so crowded that they leave hardly 

 any portion of the corallum smooth. They are of all heights, from a few mm. to 4 cm. 



i. Lacepede Island, North-West Australia. Coll. SaviUe-Kent. 93. 11. 8. 15. 



A thin encrusting specimen with small star-like calicles. The surface is greatly roughened 

 by the regular uprisings of the coenenchyma, which are here and there simple papillse. This 

 is probably a young specimen of the two last. 



"'. Lacepede Island, North- West Australia. Coll. Sa\alle-Kent. 93. 11. 8. 16. 



A small fragment of an explanate growth which may perhaps belong here. 

 ? k. Arafura Sea. Admiralty. 92. 4. 5. 41. 



Two small fragments of massive specimens which also appear to belong to this type, and 

 were labelled by Brliggemann, " near expa^isa." 



I, m. Keeling Island. H. 0. Forbes, Esq. 84. 2. 16. 3-4. 



A doubtful encrusting specimen of very irregular shape and not unlike the specimens 

 c, d, e, but the calicles are much smaller and further apart, and the reticulum is closer. 



? n. Eocky Island, Great Barrier Eeef. Coll. Saville-Kent. 92. 12. 1. 12. 



