CODIACEAE 43 
occurrence of the present species in American waters, but is also 
the first record of the occurrence of a species of Caulerpa on the 
shores of Peru. Montagne, however, lists three widely distributed 
species of the genus in his flora of Chile (C. Gay, Hist. Fis. y Pol. 
Chile, Bot. 8: 374-377. 1854). 
Family CODIACEAE 
CODIUM Stackh. Ner. Brit. xvi, xxii, xxiv. 1797. De- 
Toni, Syll. Alg. 1: 488. 1889 
Lamarckia Olivi, Zool. Adriat. 258. 1792. Not Lamarkia Medic. 
Vorles. Chur. Phys. Oek. Ges. 4!: 183. 1789. 
Spongodium Lamour. Ann. Mus. Hist. Nat. 20: 288. 1813. 
Agardhia Cabrera; Ag. Syn. Alg. Scand. xxiv. 1817. 
Acanthocodium Suring. Ann. Mus. Bot. Lugd.-Bat. 3: 258. 1867. 
Codium tomentosum peruvianum var. nov. 
More or less complanate, especially under the dichotomies, 
rather closely and subflabellately dichotomous toward the apices; 
apical wall of the peripheral utricles often much thickened (3-40 и 
thick), with the thickening now and then introrsely umbonate as 
well as externally convex (up to 70 и thick, including internal 
umbo); gametangia (9 ?) ovoid-fusiform to elongate-clavate, 
200-350 и X 60-110 u. [PLATE 9; TEXT FIGURES 9-14. 
Lobos de Afuera, March 27, 1907, Coker 145a; Bay of Chilca, 
in 114 fathoms, September 2, 1907, Coker 242 (type). 
13 
! 
ае е 
FIGURES 0-14. Codium tomentosum peruvianum. 9-12, outlines of peripheral 
utricles, showing varying amounts of thickening of apical w wall; 13, apex of utricle, 
with introrsely umbonate thickening; 14, gametangium, etc. All of the figures are 
enlarged 55 diameters. 
