46 CODIACEAE 
terminal segments of its thallus are also commonly attenuate. 
In general size and habit this species is not very different from 
our Codium tomentosum peruvianum, though Codium foveolatum 
evidently has a more repent or rhizomatous base and is apparently 
of a lighter green color, but the two are widely different in the 
character of their utricles, as is manifest even to the naked eye. 
LEEW ps 
< c 4 
ГВА eu terrd 
AC XO SO 
19 
n их 
FIGURES 15-10. Софит foveolatum. 15, а typical peripheral utricle; 16 and 
17, other forms of utricles; 18, a utricle in optical section, showing slightly thickened 
apical wall; a portion of the exposed apical surface of a peripheral utricle, showing 
pits, ridges, and areolae. Figures 15—18 are enlarged 55 diameters; 19, 390 diameters. 
PLATE 10. Codium foveolatum 
Photograph of the type specimen, from liquid preservative, natural size. 
Ап unnamed Codium from Peru is mentioned as the host of 
Rhodopeltis Geyleri Ask. (Bot.-Morph. Studien 42. 1872), au 
epiphyte that has since been identified with the South African 
Placophora Binderi (see Goebel, Flora 72: 3. 1889). 
Halimeda Tuna (Ell. & Soland.) Lamour. has been reported 
from Paita, Peru, by E. S. Barton,* but we have found no repre- 
sentative of this genus in Dr. Coker's Peruvian material. 
* Siboga-Exped. Monog. 60: 13. TOOL 
