16 CHAMAESIPHONACEAE 
of the Cyanophyceous endophyte, but are sometimes the cells of 
a Bangiaceous endo-epiphyte—Erythrocladia endophloea. Нуейа 
infestans has been observed also in association with Chlorogloea 
endophytica in the stipe of Chondrus canaliculatus from the Chincha 
Islands, Coker 192 p.p. 
Conidangia have not been observed with certainty and we 
doubt if they occur, at least in the material at hand. The small 
cells of Chlorogloea endophytica, which sometimes occur in the 
Hyella colonies, we at first suspected to be ‘conidia of the H yella, 
but they are yellowish-green, while the Hyella is blue-green, and 
we believe the two to be quite independent of each other, having 
been able to follow each from a few-celled stage to the mature 
colony. 
Hyella infestans is doubtless a close relative of Hella endo- 
bhytica Вбгвезеп (Bot. Ғаегбев 2: 525. f. 100. 1902), from which 
it appears to differ in the more compact subparenchymatous 
colony with its surface more superficial or exserted, in the relatively 
broader, more discoid, and usually larger cells of the filaments, and 
in the apparent absence of conidangia. 
DERMOCARPA Crouan, Ann. Sci. Nat. Bot. IV. 
9: 70. 1858 
Sphaenosiphon Reinsch, Contrib. Alg. et Fung. 15. 1875. 
DERMOCARPA PRASINA (Reinsch) Born. & Thur. Not. Alg. 76. 
pl. 26. f. 6-9. 1880 
Sphaenosiphon prasinus Reinsch, loc. cit. 17. pl. 20.9. Р. 
Sphaenosiphon incrustans Reinsch, loc. cit. pl. 26. f. 3. 
Dermocarpa prasina var. incrustans Holmes & Batters, Ann. Bot. 
5: 67. 1801. 
Оп Streblocladia spicata, Prionitis decipiens, and Cladophora 
fascicularis, from drift on the beach, Pisco, July 7, 1908, Coker 465 
Р.Р.; оп Chaetomorpha cartilaginea and Cladophora fascicularis, 
from surf-washed rocks, Chincha Islands, June 18, 1907, Coker 106 
b.p., associated with more numerous thalli of Erythrotrichia poly- 
тотрћа, to which (in our more or less decolorate material) it 
occasionally bears a slight superficial resemblance. 
In general habit of growth these Peruvian specimens are per- 
