POLYCHAETA—BEN HAM. 
117 
EXPLANATION OF PLATES. 
Plate 5. 
Syllis cl os terob ranchia (figs. 1-2). 
Eig. 1. A parapod, anterior face ( X 45). 
2. The ends of two acicula. 
S. brachycola (fig. 3). 
Fig. 3. Tip of aciculum. 
Splicerosyllis mcintoshi (figs. 4-6). 
jr*’ 7 1 • ' 
Fig. 4. Anterior end, dorsal view ( X 45). Camera outline from a specimen mounted 
in glycerine. 
5. Ventral view of the same (x 45). 
6. The tips of acicula. 
Autolytus chareoti (figs. 7-10). 
Fig. 7. A transverse section of the body, atokous stage, in front of the middle (camera 
X 30). The dorsal cirri present a series of glands along the upper part of the 
outer surface; the great ventral glandular pad is distinctly marked off from 
the body. 
8. A chseta from the upper part of a bundle ( X 720). 
9. The “ head ” of Polybostrichus, ventral view (camera X 20), showing the 
relative lengths of the appendages and the ventral swellings below the great 
lateral tentacles. 
10. The “ head” of Polybostrichus, dorsal view (X 30), showing the epaulettes 
of the species ; some of the appendages cut short. 
Exogone anomalochceta (figs. 11-13). 
Fig. 11. Anterior end, camera outline (x 90) ; the nuchal organ is seen on the left side. 
12. Hind end ( X 90). 
13. The three forms of chsetae in the dorsal bundle (enlarged : (a) Tip of the 
capilliform ; (b) end of the uppermost gomphotrich, side and fiont views; 
(c) one of the remainder of the bundle, both aspects. 
Hololepidella flynni (figs. 14—20). 
Fig. 14. Dorsal view of the head ( X 10); the palp and peristomial cirri of the right 
side are omitted. On the left side the first elytrophore is indicated. 
15. A parapod of a cirriferous segment, posterior face (camera X 15). 
