ON THE DEVELOPMENT OF LICHENOPORA VERRUOARIA. 143 
The suspensor and the cells which surround it are closely connected with a 
mass of cells, a, which form part of the investment of the brown body. 
Fic. 24.—Embryophore from a colony ‘48 mm. long and *45 mm. broad. 
(Length of suspensor, 41°6 » ; transverse diameter of embryo, 20°8 yu.) 
Fic. 25.—Showing the abnormal development of two embryos within the 
same embryophore. From a colony ‘56 mm. long, consisting of five mature 
zocecia. 
Fic, 26.—Embryo (Stage D) from a colony °56 mm. long and ‘37 mm. 
broad, consisting of five zocecia. The outer layer of nuclei is unusually 
distinct. 
Fic. 27.—From a colony ‘69 mm. long and *51 mm. broad, consisting of 
about twelve mature zoccia. The fertile polypide has degenerated, and the 
brown body has approached the orifice of the zoccium. The embryo is 
28 » long, and the length of the entire embryophore with the brown body is 
93 p. 
PLATE 10. 
Fic. 28.—From a younger colony, ‘43 mm. long and ‘37 mm. broad, con- 
sisting of six mature zocecia. The brown body has not yet reached the orifice 
of the zocecium, and development is consequently not quite so advanced as in 
Fig. 27. 
Fic. 29.—From a considerably older colony, *56 mm. broad. The upper 
end of the embryophore had met the orifice, as in Fig. 27, and evidence was 
obtained that the zocecium was occluded by a membrane stretching across the 
orifice. Length of the embryo 70 yu. 
Fie. 30.—(Stage H.) Obliquely longitudinal section through the embryo- 
phore of a colony ‘62 mm. broad. The upper end of the figure was turned 
towards the brown body. Diameter of the embryo 30°4 nu. 
Fic. 31.—Embryo from a colony *83 mm. broad. The occurrence of the 
split-like spaces s, and the arrangement of the inner mass of nuclei indicate 
that embryonic fission is about to commence. Longest diameter of embryo 
45°6 p. 
Fies. 32 and 33 are consecutive transverse sections of the larger portion 
of an embryo at the beginning of its fission. From a colony ‘93 mm. broad, 
containing two fertile zowcia. The longest diameter of the embryo is ‘68 p. 
A smaller piece of the embryonic tissue, not shown in the figures, is already 
completely separated from the portion drawn. 
Fic. 34,—Transverse section of the older embryophore from a colony 
(86 mm. broad) containing two fertile zocwcia. Embryonic fission is actively 
proceeding. The diameter of the giant-cell a is 17°6 p, and that of its 
nucleus is 9°6 p. 
