84 BULLETIN OF THE 
Peniagone and its nearest allies varied from a transparent milky white 
to yellow and light yellowish brown. Others again were of a pinkish 
color. 
Deima, Orphnurgus, and their allies, were of a light brown or of a 
dirty yellow color. Benthodytes and Euphronides, with the exception 
of a few translucent specimens of a whitish tint, varied from a reddish 
violet to a deep claret, or to reddish with pronounced bluish tints, and 
one fine specimen of the group was of a bluish color with delicate violet 
shades passing into whitish milky blue. 
Psychropotes and allied genera were of a reddish violet color on the 
dorsal side, with bluish violet of a lighter shade on the ventral surface, 
The Maldanie, Serpule, and Terebelle did not differ in their type 
of coloring from their littoral congeners. 
The coloring of the so called deep-sea Acalephs, Periphylla, Atolla, 
and the like, has already been noted ; it is usually of a deep violet or 
yellowish red. Although they have the characteristic coloring of many 
of the deep-sea types, yet they are known to live within comparatively 
shallow limits, inside the 200 fathom line, and even to come to the 
surface. 
A species of Stomobrachium was remarkable for its light carmine 
color, a tint hitherto not observed among Acalephs. 
The color of the Cephalopods, like that of the Acalephs, is limited 
mainly to violet, both in typos which are undoubted deep-sea species 
and in those which are certainly pelagic. 
Among the deep-sea Actiniw, a species of a new Cerianthus was of a 
dark brick-red, while other Actinians allied to Bunodes were of a deep 
violet. Actinauge-like forms with tentacles of a pinkish violet tinge 
frequently have the column of a yellow shade. The Zoanthide were 
grayish green. 
We cannot fail to be struck in this enumeration of colors with the 
preponderance of violet shades, as also with the great variety in tints, 
and their apparent absence of adaptation to the surrounding green- 
ish gray waste of mud in which a fauna so diversified in coloring 
flourishes. 
This variation in coloring extends to species of the same group, and 
is specially marked among the Holothurians. Among the Fishes and 
Crustaceans it is less so, the former having to a great extent apparently 
assumed the grayish or brownish shades of their surroundings ; while in 
the Crustacea nothing could be more marked than the contrast between 
the brilliant coloring of the group and the dull surface upon which they 
