
No. 426.] NWEMERTEAN PARASITES OF CRABS. 445 
(Figs. 3, 4) at right angles to its longitudinal diameter. There 
is no trace of accessory stylets. 
The usual small, oval middle chamber lies directly behind 
the stylet region and connects with the anterior chamber by a 
canal (Figs. 3, 4) which passes close beside the basis of the 
central stylet and which, though narrow, is broader than in 
many other metanemerteans. The middle chamber, behind 
the stylet, is highly muscular, lined with flattened epithelium, 
and is often filled with fluid containing an abundance of gran- 
ules resembling hardened secretions (Fig. 4). These, I think, 
originate in the posterior chamber as described below. 
The proboscis now bends sharply on itself in ordinary states 
of contraction and ends in an oval chamber with small lumen 
and very massive glandular walls (Figs. 2-4, 6). The cells 
lining this chamber are highly columnar, irregularly arranged 
9 
QOL CD Ie 
rZ 
ds 
Y 
- 
eee 
7 
AON 
FR 

Fic. 8. — Transverse section of body of C. epialti, showing the thick layer of submuscular glands 
(se) and the ovaries (ov) with large ova. The intestine (Z) is reduced to a narrow canal, 
Other reference letters as in Fig. 7. x 200. 
in several layers, and are thickly packed with secretions which 
have great affinity for ordinary stains. This posterior cham- 
ber is closely imbedded in the surrounding connective tissue 
(Figs. 4, 7), and this appears to be connected with the muscular 
