aia 
ageal musculature is well developed. There is not much pigmented matter among the 
muscles of the ocesophacus. | 
NERVE-RING. ike: weit develope: nerverring eurrounde the oesophagus souewhat, 
qquarely and there are obvious werve celle both in front of and behind it. 
INTESTINE. The yellowish intestine, which becomes at once three-fourths as wide 
as the body, is thick walled with a noderabély obvious luuen, but with no dietinctly 
refractive lining. Farther back the lining of the intestine becomes more refractive, 
though e the specimen under examination, the lumen is not readily distinguishable, 
that ie to say the walls of the SELeRtane, when viewed in profile lie in conta ct with 
gach other. The intestine te made up of cells. of such a size that wiabab ly about 
®ix are presented in each cross eemt ion. These sells contain nubs ous eranules of | 
varkble size, the largest .of which are considerably wider than the anmulee of the cute 
| tele, There neeeere to be a sort. of collar between the eesophacuse and the intestine, 
the principal constriction being in front. of the collar. 
TAL The tail is conoid from in front of the anus and tapers more rapidly just 
| hohine the arus than farther backs it is short and blunt, being at ite terminus ‘Bub- - 
éruncate aria about one-eighth as wide as at the anus. There is no Spinneret. The 
cuticle on the terminus is a little thicker than it is farther forward. The contour 
of the terminal portion is = Little more distinctly crenate than is the rest of the 
bedy. The anus is slightly depressed, and from it the rectum, which is considerably 
longer than the anal body diameter, and appears to be about as long as the tail, ex- 
tends inward and wore directly forward than usual. 
On each side of the teil near the beginning of the middle third there is a cush- 
ion-like elevation (phesmid) the main portion of each of which seems to be a thicken- 
ing of the cuticle. These are lateral, or a little dorgad of lateral. ‘when brought 
into optical section they are seen to constitute a rather distinct brea or altera- 
tion in the cutialar and adjacent tissues; the cuticula is at this point slightly 
raised, while at the same time the contour of the body wall urder the subcuticle is 
Blightly depressed. As they oceur on the larvae it is presumed that they gre not 

