No.426.] WEMERTEAN PARASITES OF CRABS. 447 
other genera. The intestinal canal is broad, with short lateral 
pouches which become very much reduced towards the pos- 
terior end of the body. 
The nervous system shows few deviations from that in related 
genera. The brain is fairly well developed as shown in Fig. 1. 
From the dorsal lobes a pair of large nerves (Fig. I, zv) pass 
anteriorly to the eyes and anterior portions of the head. These 
are easily seen in living worms. I found no indications of 
cerebral sense organs either when the specimens were stained 
^ 
ON 

Fic. 9. — C. epialti. Transverse section of body showing the large number of spermaries (£) 
and their distribution throughout the body. Reference letters as in Fig.7. x 200. 
in toto or when examined in sections. I also failed in my 
attempts to locate the efferent nephridial ducts. 
Throughout the head the tissues are crowded with the cephalic 
glands. Those situated more anteriorly open mainly on the tip 
of the snout (Fig. 6, cg), but farther back they open directly 
outwards on all sides of the body. Back of the brain they pass 
gradually into the submuscular glands which extend as a dis- 
tinct layer throughout the length of the body. The glandular 
cells composing this layer open directly outward to the sur- 
face of the body (Figs. 6, 7, 8, sg) and are situated on the 
whole circumference of the body immediately internal to the 
