42 
The chromatophores are roundish or oblong (Fig. 8 +), lying 
quite. near the thin wall of the plant; they contain a pyrenoid and 
are often filled with amylum. 
It was found at St. Thomas: in the sound to the west of 
Water Islands where it was growing in about 20—30 meters. 
Setting aside that the flabellum in my specimen is transversely 
oblong and zonate while Howe describes the plant as "not at all 
or very obsoletely zonate” and the shape of the flabellum as ”fcuneate- 
obovate or irregularly semiorbicular with cuneate base” my plant 
agrees very well with Howe's description. The specimen of Mazé's 
algæ, Nr. 1403 in Herb. Thuret, upon which Howe has based his 
description and which I have been able to see myself through the 
kindness of Dr. Bornet, consists of 3 specimens of which the one 
again consists of two. Howe considers this No. as the type- 
specimen. Now Dr. Bornet has communicated the following to me: 
«Dans Vherbier Crouan le FYabellaria luteofusca est représenté par 
des échantillons portant les numéros 27, 1403 et 1904. Ces deux 
derniers seulement sont cités dans le livre de Mazé et Schramm, 
p. 88. Le No. 27 (10?me envoi Conquérant) est le seul qui soit 
étiqueté de la main de Crouan.” And Dr. Bornet has most kindly 
sent me a calk of this specimen, showing that it consists of two 
small undivided specimens in shape rather like those of the 
No. 1403. If any one of the three specimens in Herb. Thuret should 
be preferred it seems to me it may be the No. 27; but why not 
consider all three as type-specimens? When Howe describes the 
stipe as simple or 1—3 times dichotomous I think he alludes to 
the No. 1904. This Nr. of which Dr. Bornet also has sent 
me a calk is a big specimen whose stipe is several time divided, 
bearing five flabella, these being nearly obovate with cuneate 
base and in the uppermost part more or less lacerated. In the 
British Museum another specimen of this number is present. 
Dr. A. Gepp has most kindly sent a calk to me; it consists of 
two plants which also have the stipes branched, the one with three E 
