months of January and February, and from June to the end oi the year, but in the specimens 

 collected they most frequently occur in smal! number. 



Occurrence: The species has apparently occurred abundantly at the stations gi, 220 

 and 240, perhaps also at most of the other stations, from which, however, partly only one, 

 partly a few specimens have been brought home. Nearly all the specimens from stat. 220 

 belong to f. pygmaea, whereas al the other stations only f. typica has been represented, nou- 

 and then with scattered specimens of f. flabelliformis. 



Area: Pacific: The Moluccas, the Carolines, Tami Island on the north-eastern coast 

 of New Guinea, and at Queensland; Indic: the Mauritius (f. torquescens). 



III. Mastophoreae Fosl. 

 Mastophora (Decsn.) Harv. 



Subgen. E u m a s t o phora Fosl. 



1. Mastophora macrocarpa Mont. PI. XIII. 



Voy. au Pol. sud. p. 149; Aresch. in J. Ag. Spec. Alg. II, p. 528; Kütz. Tab. Phyc. VIII, t. 100. 

 Syn. Mastophora macrocarpa Heydr. in Hedvvigia. Bd. 33 (1894), p. 300? 



Stat. 58. Seba, Savu. Reef. 



Stat. 115. Kast side of Pajunga Island, Kwandang Bay. Reef. 



Stat. 125. Sawan, Siau Island. Reef. 

 Stat. 129. Kawio and Kamboling Islands, Karkaralong-group. Reef. 



Stat. 149. Fau Island, lagune. West coast of Gebé Island. Reef. 



Stat. 193. Sanana Bay, East coast of Sula Besi. Reef. 



Stat. 231. Ambon. Reef. 



Stat. 279. Rumah-Kuda Bay, Roma Island. Reef. 



Stat. 303. Haingsisi, Samau Island. Reef. 

 Birakeke, Celebes '). 

 Den Bril near Macassar. leg. Snac.KEY. 



The Kützing figure of this species in Tab. Phyc. 1. c. is a fairly exact representation 



ot the plant occurring under that name in the Kützing herbarium, now in the possession of 



Madame Weber-van Bosse. The specimen is authentic, having been distributed by Montagne 



himself. In addition to the description of the plant is to be stated that the conceptacles of 



sporangia in the said specimen are conical and about 750 p.. in diameter, when seen from above. 



In the Siboga collection occur a number of specimens which fully agree with the said 



ecimen. The plant partly covers and rather closely clings to different other algae (pi. XIII, 



- 5i 7. 9), partly at length the greater part of it gets free (pi. XIII, fig. 6, 8, 10 — 12), 



or it may be loosely creeping over the bottom, to judge from the sand or other extraneous 



1) Cp. the footnote 2 under Mclobesia farino 



