- 11 
greatest breadth is 4 J /2 mm. (including tlie parapodia), and the 
number of their segments amounts to 150. The smallest speci- 
men lias a length of 65 mm. and possesses 132 segments. The 
body of the preserved worms is quite colorless, exeept the un- 
derside of the head and of two or three anterior segments, having 
a yellowish hue. About the Honolulu-specimens Johnson stated: 
„the tips of the dorsal posterior pair of peristomial cirri are yellow 
and that is the only pigmentation in any part of the animal”. 
During life the worms appear to be flesh-colored, due to the blood 
of the peripheral vascular sytem, shining through the skin. 
The cephalic lobe, one and a half as broad as long, shows a 
distinct longitudinal groove in the middle of its upper side. The 
two pairs of eyes are situated next to its posterior border, in front 
of each other ; the anterior ones are the largest and more remote 
from each other than the posterior pair. The longitudinal diameter 
of the buccal segment does not exceed much that of the following 
ones. The tentacular cirri are short, dilated in their basal segments 
and their terminal part rapidly tapering towards the tip ; the longest 
of them, reversed, extend till on the 4th segment or the anterior 
border of the 5th one. With none of the specimens the proboscis 
was everted ; however the jaws were examined and showed a 
yellow colour, with dark-brown at the tip. Both jaws did not 
possess exactly the same number of teeth, that of the one side 
showing only 7 of them, that of the other side 9. 
The parapodia are 
nearly cylindrical, 
with a conical anteri- 
or lip and a tip, that 
can be retracted, as 
rightly stated by 
Johnson, for a mus- 
cle-fascicle for this 
purpose can be traced 
within the foot. The 
dorsal lobe of the 
foot with L. hawai- 
iensis is only re- 
Posterior view of 145th foot of Lycastis 
hawaiiensis Johns. X 36. 
presented by the acicula, for it wants the fascicle of bristles, visible 
in the other species of the genus. Only with one of the adult 
