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249 
SOME MARINE ALGH FROM NEW SOUTH WALES. 
By A. ann E. 8S. Gepp. 
(Puate 481,) 
Tue following notes treat of a collection of marine alge from 
New South Wales, made by Mr. A. H. 8S. Lucas, and sent to us 
through his kindness, and by the courtesy of Dr. J. H. Maiden, 
Director of the Sydney Botanic Gardens. The specimens, though 
small in number, are some of them very interesting, partly from 
their rarity, ane partly from their size and good con ndition. They 
yw 
are new to science, or are very little known species. ‘Goins have 
been determined with difficulty, notably the large membranous red 
alge, several of which occur on the — a oasts, and are so 
alike in external appearance as to be nei y siomsnae ears to 
the mere collector; indeed, before the pene ed 
plants in their ae genera = nei as Cie Houmas 
Chrysymenia, Grateloupia, Glaphyrymenia, Pachymenia, Epiphlea 
and soon. And as regards oe type of alga, it may well be that 
pee a waters are not ye usted. 
The actual novelties described in this paper are two new species 
—Dictyota prolificans and Gracilaria Lucasii ; also — 2 ipsa a 
Rhabdonia robusta and Grateloupia filicina, and a new form 
Pterocladia lucida, The cystocarps of Kallymenia taxman ica ei 
Grateloupia australis have been found for the first e, and the 
nudum until now, thus necessitating a ening in the present 
paper 
The characters of the fertile frond of Dictyota nigricans a 
shown in the plate, no figure of that plant having been pu nblished 
before. The distribution area of Pterocladia capillacea has been 
vastly extended, and Gracilaria Textorti, hitherto known only from 
apan, has been found in perfect fruiting See a in New South 
Wales, affording a fresh geen # the relation between the marine 
floras of Japan a nd East Aus 
Mr. Lueas’s interesting sip tan been of em peeps to 
us, and are embodied in the paper. A complete set speci- 
mens has been placed in the fs of the British Vaccine 
CALOTHRIX HRUGINEA daar In rock-pools; Barwon Heads, 
Victoria, January, 1908; A. H. S. Lucas, no. 15. Growing on 
Corallina rubens. 
Geogr. Distr. Mediterranean, North and South Atlantic, Red 
Sea, Pacific. 
Micropictyon umsiicatum Zan. Sandringham, nes Bay, 
JournNnaL or Borany.—Vou. 44. [Aveust, 1906.] 
