SEA-WOIL¥S, 63 
The body consists of from one hundred to two hundred 
segments. The head consists of two segments, the first 
Fig. 69.^Ei(chone elegans, Fia. 70 — Amphitrite ornata, natural size, 
enlarged. 
"with four eyes and two pairs of tentacles. The second seg- 
ment bears four tentacles. Each of the other 
segments bears a pair of paddle-like append- 
ages, which may be best studied by examining 
one of the middle segments (Pig. 68), 
In certain kinds, as Eucliojie (Fig. 69), the 
gills form a beautiful feathery crown on the 7i_riiiated 
head; while in Amphitrite (Pig. 70) the ten- ^^^Y^^lpi.yuX 
tacles are very numerous, and the bushy red ^oce). 
gills grow out by their side. Some sea-worms are beauti- 
fully phosphorescent. The young of all sea-worms (Pig. 
71) are ciliated, and swim on the surface of the sea.^ 
* See Yerdirs works iu U. S. Fish Commissiou Reports^ etc, 
