64 Annelida Ghcetopoda 
ternal organs showing through. Alimentary canal sur- 
rounded, except for a short distance in front, by a yellow 
glandular mass which is divided on each side of the middle 
line into semicircular lobes or plates of varying thickness. 
First third may be regarded as made up of fourteen or 
fifteen segments, but the segmentation is very obscure. 
On most specimens there are peculiar bodies on thirteen 
segments, beginning with the second, appearing as lateral 
circular elevations with raised margin, concave, centre 
occupied by a minute elevated point. I know nothing as 
to the function of tliese bodies which are not found on 
some specimens. No segmentation could be made out 
along the middle third of fresh specimens. In alcoholic 
specimens, on the ventral surface, lines of division can be 
seen, but they are very obscure. The posterior third is 
light gray, with brown specks, opaque, and terminates in a 
clear white anal segment. 
Segments clearly defined, short, numerous. The anal 
aperture has a minutely crenulated margin. 
The entire body is covered with narrow, raised trans- 
verse lines, made up of minute verruciform bodies ; these 
are less apparent on the middle third than elsewhere. In 
living specimens a narrow, raised, flattened band occupies 
the middle line of the ventral surface. In alcoholic speci- 
mens the ventral surface is much depressed, and an elevated 
rounded ridge on each side separates it from the lateral 
surface. 
Setae. After careful examination of many specimens I 
believed that this species was without setae. Afterwards 
I found a single fascicle of six setae, one of which is re- 
presented in f. 148. Malmgreu assigns to Lysilla six 
setigerous segments. I am unable to say how many 
segments of this species are setigerous, but have referred 
it to Lysilla because in all other respects it agrees with 
that genua. 
