14 CHAMAESIPHONACEAE 
five fathoms," Bay of Sechura, April 8, 1907, Coker 157 p.p. (type) 
—associated and occasionally intermingled with Hyella infestans; 
in cortex of the stipe of Chondrus canaliculatus, Chincha Islands, 
June 18, 1907, Coker 192 p.p., here also associated with Hyella 
infestans. Chlorogloea endophytica differs from С. tuberculosa 
(Hansg.) Wille in its endophytic habit and in its less distinctly 
seriate arrangement of the cells, the softer gelatinous walls soon 
allowing the cells to become inordinate; though the cells are at 
first chiefly in rows, the cell divisions apparently occur in various 
planes. 
The colonies in the cortex of the Chondrus are the larger and 
better developed, penetrating to a depth of 100—170 и, while those 
in the Leptocladia penetrate only 30-65 и. Those in the Герю- 
cladia were the first to be seen and studied and furnished the 
material for our figures; otherwise, the specimens inhabiting the 
Chondrus would have been named as the type. 
Family CHAMAESIPHONACEAE 
HYELLA Born. & Най. Jour. de Bot. 2: 162, 163. 1888 
HYELLA CAESPITOSA Born. & Най. loc. cit. 162; Bull. 
Soc. Bot. France 36: clxv. pl. ro. f. 7-9; 
pl. 11. 1889 
In old shells, associated with Plectonema terebrans Born. & 
Flah. and various other small encrusting and perforating algae, 
dredged near San Lorenzo, region of Callao, February 5, 1907, 
Coker 59 p.p.; in a piece of shell with Gomontia arhiza Hariot, in 
one fathom of water, Isla Vieja, Bahia de la Independencia, July 
20, 1907, Coker 00630 p.p. 
Mastigocoleus testarum Lag., which is elsewhere commonly 
associated with Hyella caespitosa and with Gomontia, may also 
occur, but has not been detected with certainty in this material. 
Hyella infestans sp. nov. 
Forming endophytic, bluish-green, slightly elevated or sub- 
papilliform corticicolous colonies, these mostly 30-90 и broad and 
suborbicular or irregularly stellate or radiate in surface view, 
penetrating thallus of the host about 50-70 и; filaments usually 
distinct in exterior half of the colony, erect or obliquely ascending, 
