68 O. A. MAC MUNN. 
The residue gave the usual reaction with nitric and sulphuric 
acids, so that the ovaries contained a chlorophan-like lipo- 
chrome. 
The orange under parts of the integument when extracted 
with alcohol yielded a deep yellow solution showing strong 
absorption of the violet end of the spectrum, and in less deep 
layers at least one band from about 4503 to 4468, and a 
second very feeble band in violet. The residue was deep yellow, 
soluble in lipochrome solvents, and giving lipochrome reac- 
tions. The brown upper integument contained a similar pig- 
ment, and by extraction with alcohol and sulphuric acid was 
found to be free from hematoporphyrin. 
The radial ceca formed a pale yellow solution in alcohol, 
which had a faint red fluorescence and showed an entero- 
chlorophyll spectrum. Only one lipochrome band from about 
A 503 to A 474 could be detected. The lipochrome reactions 
were obtained with the residue, which had a dull yellow 
colour. Here, again, the same lipochrome is found both in 
digestive gland, in the integument, and in the ovaries. 
Goniaster equestris.—The brilliant red pigment scraped 
from the surface of the integument gave a faint band at p, 
and strongly absorbed the violet end of the spectrum. 
No hematoporphyrin was found in the integument; the 
latter, however, yielded to alcohol an orange-red colour, 
which in a deep layer transmitted the red and a little green, 
while in a thin layer a dark band at the blue end of green 
extended from 503 to (471; a second one was also seen 
from about 462 to 4443 (sp.6 and 7). The residue from 
this was orange and in parts deep red, soluble in chloroform 
with a deep orange-red colour, absorbing strongly the violet end 
of the spectrum up to the beginning of green, and giving two 
bands (sp. 8) placed closely together, of which the first, much 
darker than the second, read from about A505 to 478, and 
the second about \ 474 to \ 449, it was soluble also in ether, 
forming a deep orange solution with the same kind of absorption 
in a deep layer as the other solutions, and in a shallow layer 
showing two bands, the first from 1503 to A 471, and second 
