HOWE: PHYCOLOGICAL. STUDIES. 495 
British Fuci, published in the same volume of the Transactions, 
it would seem that these authors were not very familiar, personally 
with ‘‘ Fucus tomentosus’’ and, furthermore, that they considered it 
‘“‘very doubtful whether it may not belong to the genus Ulva.” 
Agardh doubtless thought that he was improving on the specific 
name in substituting elongatum for the inapt and more or less 
misleading decorticatum, but under the prevalent rules of pro- 
cedure of the present day, there seems to be no sufficient reason 
for ignoring what is apparently the oldest tenable specific name. 
Harvey and some other writers have doubted the specific 
distinctness of what has been known as Codium elongatum, con- 
sidering it a form of C. tomentosum. But in its usual form it is so 
different from Codium tomentosum, and ambiguous conditions are 
so few that it seems worth while, for the present at least, to 
maintain its specific rank. Its elongate and sparingly branched 
habit, its more or less pronounced flattened expansions below the 
dichotomies, and its larger utricles, are commonly quite sufficient 
to distinguish it from C. tomentosum. In this connection, however, 
it is of interest to note that the apparently original specimens of 
C. elongatum Ag., preserved in the Agardh herbarium, do not 
show particularly large utricles (they are I110-225y in greatest 
width), and the dilations under the dichotomies are not remark- 
ably pronounced, reaching a width of scarcely 2 cm. In speci- 
mens of our collecting in Bermuda the dilations sometimes have 
a width of 10 cm. or more. 
PHAEOPHYCEAE 
COLPOMENIA SINUOSA f. TUBERCULATA (Saunders) Setch. & Gard. 
Univ. California Stud. Bot. 1: 242. 1903 
Colpomenia tuberculata Saunders, Proc. California Acad. Sci. III. 
t: 164. $1. 32. f. F-3. 1898. 
La Paz, collector unknown. The specimens were sent to Dr. 
C. L. Anderson from the California Academy of Sciences, with 
the information that they had been used for packing. The brown, 
coriaceous thallus forms mats 10-20 cm. wide. Some parts of 
the thallus are nearly smooth, some parts bear wartlike excres- 
cences, and others are drawn up into subconical, bullate, or 
finger-shaped processes sometimes 1-2 cm. long. 
