strong constriction just above the dichotomy (Fig. 4 a, 6). The 
diameter of the filaments about 20—30 y, more often reaching only 
24—27 y. Near the surface the filaments grow gradually slender, 
becoming more and more torulose and more richly ramified (Fig. 4 c, d), 
woven together, forming a rather firm but yet open plectenchyma 
ss 
4 
À 
Fig. 4. Avrainvillea asarifolia nov. sp. 
Compare text. a—f about 1; g about 17%/:. 
(Fig. 4e); the diameter of the outermost filaments varies from 8— 
10—13 p; the walls here in the outermost filaments are rather thick, 
thicker than those of the filaments in the middle of the flabellum. 
Sometimes the apex of the filaments runs out in long hairs 
(Fig. 4 f). (Tab. IIT). 
The chromatophores are roundish or oblong and contain a 
5* 
