CODIUM 45 
bens Mart. a synonym of C. lineare, but C. decumbens, if we are 
correct in identifying with it Uruguayan specimens agreeing very 
well with Martius' description, has large thin-walled utricles 
that are mostly 240—500 и in maximum diameter. 
Codium tomentosum, under the name Spongodium commune, was 
attributed to Paita, Peru, by Bory (Voy. Coquille, Bot. Crypt. 
251. 1829). 
Codium foveolatum sp. nov. 
Thallus deep green, 10 cm. (or more?) long from a repent or 
decumbent branching base; main axes unbranched for 2-3 cm., 
then closely subflabellately or subpalmately 2-5 times rather ir- 
regularly dichotomous, the segments subterete or slightly flattened, 
here and there twice as broad as thick, 3-7 mm. broad, obtuse; 
peripheral utricles mostly free and irregularly subimbricate on 
drying, giving surface of thallus a rather coarsely vesicular- 
spongiose appearance, cylindric-clavate to long-obovoid, mostly 
800-1150 u long and 200-500 u in greatest diameter, commonly 
slightly enlarged for 200—300 и below the apex, then often with 2—4 
gibbosities and abruptly contracted or sometimes with a second 
inflation near the base, the walls rather flaccid and easily collap- 
sible, the subtruncate or broadly rounded apex slightly thickened 
(apical wall usually 6—13 и thick), the cuticle of the exposed apex 
minutely foveolate, areolate, papillate, eie de or rugulose, 
the foveolae irregular, mostly 3-7и in diameter; gametangia 
unknown. [PLATE 10; TEXT FIGURES afa 
"In the surf," Lobos de Tierra, April 2, 1907, Coker 150 b. 
The specimen is attached to a piece of rock, and is associated with 
the basal parts of a Corallina. 
Only one specimen was collected, but the plant has such striking 
peculiarities that we do not hesitate to suggest that it represents a 
hitherto unrecognized species, even though a microscopic reéxami- 
nation of the types of one or two of the more anciently described 
species might possibly be desirable in this connection. So far as 
we are aware, no pitting of the utricle wall has previously been 
observed in the genus Codium. Possibly the Peruvian plant 
deserves comparison with the Brazilian C. decumbens Mart.,* but 
if we are right in identifying with C. decumbens specimens recently 
collected near Montevideo by Dr. F. Felippone, it has a smooth 
cuticle like the other previously known species of the genus; the 
* Fl. Brasil. (Enum. Pl. Brasil) 1: 19. 1833. 
