418 MISS E. S. BARTON ON NOTHEIA ANOMALA. 
Kjellman (Engler and Prantl’s Natürl. Pflanzenfam. i. Abt. r1. 
p. 280, 1891) and De Toni (Sylloge Algarum, vol. iii. Fucoid. 
p. 224) summarize the previous knowledge of N. anomala, but 
do not add to it. 
In the * Bibliotheca Botanica’ a paper, * Ueber Aufbau und 
Entwickelung einiger Fucaceen,” by Dr. Eduard Gruber, con- 
tains a short account of Notheia. He deals mainly with the 
growing-point and the development of the conceptacles, de- 
scribing also the growth of the young branch. He mentions 
the oogonia only, and regards the plant as probably dicecious. 
The parasitism of Notheia is passed over, and no account is 
given of the early stages inside the host-plant. 
This paper of Dr. Gruber was brought to my notice after my 
own investigation had been completed, and was therefore the 
more interesting as affording an opportunity of comparing results 
in the few points where our work had overlapped. I venture to 
differ from Dr. Gruber in a few details, but in the matter of the 
growing-point he was right and I wrong. These differences will 
be dealt with as they arise. 
JNotheia anomala is recorded from Australia, Tasmania, and 
New Zealand as parasitic on Hormosira and Xiphophora ; and 
specimens from these localities are preserved in the British 
Museum, collected by Dr. Harvey, Mr. Bracebridge Wilson, and 
Mr. Laing. The last-named collector tells me in a letter that 
he has never found N. anomala parasitic on any other alga than 
Hormosira, though he has seen large quantities of Xiphophora 
in a living state. 
The material on which this investigation was made was in part 
collected by Mr. Bracebridge Wilson at Geelong, Australia, and 
in part by Mr. W. R. Laing, of Christehureh, New Zealand, 
who has most kindly sent me supplies of material preserved 
according to various methods. He has also given me the benefit 
of his own observations made on living material, for which I 
here offer him my grateful thanks; but especial am I in- 
debted to him for his generosity in sending me the material for 
a research which could have been so ably carried out by himself. 
Notheia anomala is a slender, branched alga from 5-8 cm. high, 
though, according to De Toni, sometimes attaining a height of 
15 em. The largest plants I have seen do not exceed 12 cm., 
and in general they do not by any means reach this height. 
The mature stem is about 1l mm. in diameter and is branched 
