﻿TUBERCULATE MONTIPOR^. 161 



(5) A specimen from the same locality, Zamboanga (labelled M. exesa Verrill) whicli 

 close comparison shows to be specifically identical in spite of the differences in superficial 

 aspect. The difference is brought about by the early suppression of the ridges and the greater 

 profusion of the tubercles. The surface is roughened by the walling round of the calicles by 

 thick clusters of variously fused tubercles with deep depressions between the clusters, while 

 here and there the ridges which persist among these clusters of tubercles rise up into tall 

 spikes as described for specimen m. In the depressions between the clumps of tubercles the 

 frond is so thin that the daylight can be seen through the pores. These specimens m and p, so 

 unmistakably connected together by the form of the fronds, by the calicles in the smoother 

 areas, by their under surfaces, by the tall spikes from the ridges, and yet so different in the 

 surface aspect of the fronds, go far to justify the provisional union of all these specimens 

 under one head. 



p. Zamboanga. 



(6) A complete small symmetrical flower-like stock, the conical fronds being much 

 crumpled round their edges, the rich surface ccenenchyma showing the ridge and tubercular 

 formation about equally developed. The chief peculiarity about this otherwise typical growth 

 is, that the ridges are delicate saw-like rows of separate tubercles. The locality is unfortunately 

 not recorded. 



q. Locality not recorded. [Register No. 97. 10. 9. 3.] 



(7) A small (perhaps young) stock ((?•) consisting of a small flat encrusting portion, the 

 sides of which, broken into lobes, bend steeply upwards and begin to form conically twisted 

 fronds. In the hollow of the basin thus formed the tubercles are very riclily developed, 

 while round the thin turned-up edges the ridges are appeariTig. The wall-like plates pro- 

 truding from the under margin of the calicles on the steep slopes are often mere latticework. 

 The specimen was labelled M. foliosa by Bruggemann, and may well be the first encrusting 

 stage of a typical rose-like stock ; the coiling _lobes of its sides perhaps developing into the 

 fronds of the adult. 



? r. Locality not recorded. [Register No. 97. 10. 9. 4.] 



(8) There are in addition two single leaves clearly belonging to this species, and showing 

 a well-developed ridge and tubercular formation. On the larger, s, the ridges tend to be rows 

 of separate tubercles. It was labelled M. foliosa by Bruggemann. The smaller specimen t, 

 only a few sq. cm. in size, was labelled M. grandi/olia, Dana, but it shows no special feature 

 separating it from M. foliosa. 



s. Locality not recorded. [Register No. 55. 12. 27. 92.] 



t. Api, New Hebrides. H.M.S. ' Challenger.' 



(9) Five beautiful little fragments (u) from the edges of thin, curling fronds presumably 

 belonging to this type. The specimens retain the original colours of the corallum, whitish 

 olive greens changing into rich red browns. They further show the marvellous varieties of 

 surface growth, one having tall thin ridges which are hardly developed at all in the others. 



Y 



