33 
In my opinion the confusion which Murray and Boodle have 
brought into the Avrainvilleas by this is made much more hope- 
less. It seems to me that neither the diagnosis of Kitzing 
(1. c. p. 13) nor his figure may be said to give any particularly 
good characteristic of Avr. longicaulis in the sense of Howe. Ås 
on the other hand we have in the diagnosis of Murray and 
Boodle's new species Avr. Mazei a comparatively good. description, 
in which they just point out the chief characteristic for this species 
viz: the cylindric filaments, and they further give a good figure 
Fig. 3. Avrainvillea Mazei Murray and Boodle. Forma. 
Compare text. a, 6, c about 7/1. 
(1. c. tab. 288, fig. 6) of a part of a filament, it seems to me the 
only correct Course to use their name of this species. 
I shall also point out that I have been able through the kind- 
ness of Dr. Bornet to see the Nr. 65 of Mazé et Schramm's 
Algues of Guadeloupe quoted by Murray and Boodle and which 
is a well-developed specimen of this species. 
On the shores of the Danish West Indies I have only found a 
single, small, but quite typical specimen of this species. The stipe 
is about 3 cm. long; the breadth of flabellum 7 cm. The filaments 
agree very well with the figure of:Murray and Boodle and with 
Howe's description; they are about” 50 4 thick, cylindric and 
strongly constricted above the" dichotomy: 
Vidensk. Meddel. fra den naturh. Foren. 1908. 3 
