
No. 426.) NEMERTEAN PARASITES OF CRABS. 443 
whether the worms pass their early life on the gills of the crab, 
as does C. carcinophila, but suspect that this may be the case. 
The species may be described in detail as follows: Body 
small, rounded, slender, of the same diameter throughout ; sex- 
ually mature individuals about 4-6 mm. in length and less than 
half a millimeter in diameter; head not demarcated from body ; 
lateral grooves and cerebral sense organs very inconspicuous 
or wanting. 
Color, bright orange, sometimes inclining more to reddish 
and sometimes to yellowish. Head a little paler, for the color 
is largely due to the intestinal lobes which extend forward to 
the brain. 
A pair of ocelli of irregular outline, but sometimes crescent 
shaped, lie about halfway between the tip of the snout and 
the brain (Fig. 1). Sometimes the ocelli are irregularly frag- 
mented, and the pigment is aps in four irregular masses. 







3g 
REL) nem 
27 EL. 
Carp = EQ 
N a Sr 
2 oy ee 
= Orr c 
—— SAY ee Ce LIE) 
/ LE IU 
n 4X ams mud 4 d y 7 
T eG te 
E QAS A AS A t SS 
-A 4 NI SS ee Xy: ASS 
[ ERIT! EN ol Ne S 
s o REL "n 
ER ga ie TUNE 
Fic. 6. — C. epialti. Oblique section through anterior portion of body. 7, opening of rhyncho- 
dzum; cg, cephalic glands; ac, dor anteri or and posterior proboscis cha mbers; sg, sub- 
muscular glands; vc, ventral co ssure.of brain; e, cesop ic, rudimen 
intestinal caecum; 7, intestine. 
Proboscis sheath greatly reduced, extending but little poste- 
riorly to the brain, where it becomes united with the posterior 
chamber of the proboscis (Fig. 3). The sheath consists merely 
of few fibers of connective tissue supporting a very thin, flat- 
tened epithelium, and can be seen only in favorable preparations. 
Ld 
