413 
are precisely similar to those of the latter. For the rest I must 
refer to the accompanying figure. 
Ectocarpus Hincksice occurs both in the littoral zone and in 
Fig'. 72. Ectocarpus Hincksice Harv. a, b, c and d var. irregularis nov. var. a, b and c different parts of 
the plant with plurilocular sporangia; d cells with chromatophores. e var. tgpica. Plurilocular sporangia 
with involucre, a, b and c 160 : 1; d and e 200 : 1. 
the sublittoral down to a depth of about 10 fathoms. It is most 
commonly found on exposed coasts as an epiphyte on different 
algse; between tide-marks especially on, e. g. old Himanthalia lorea, 
Alaria esculenta and Laminaria digitata. It has hitherto been found 
with plurilocular sporangia only, these being observed in May, 
June, July and October. 
