2.2 2.8/ 4.5 5.2. 
The rather thick layers of the transparent, colorless, naked cuticie are traversed | 
by tranaverce striae, hard of resolution, which are interrupted dn the lateral fields 
by the presence of areas opposite the lateral chords on which the striae are acwe 
whet different and fainter. <A very careful examination of the annules indicates that 
they are resolvable iat very faint secondary elements. The striae are rether uni- 
form throughout the body, and, near the head, are about seven-tenths of a micron aq 
part. Slightly oblique longitudinal striee, due to the attachment of the. musculature, 
are rather Seadily visible re most recione of the body; they are plainly interrupted 
by the Juterel ‘chords, whith appear to be about one-third sa wits as the body. 
contour of the body is exceptionally minutely crenate and the annules de not appear 
to penetrate the subcuticula, which, in the specimen under examination (recently re- 
moved from cycloos and fixed in Plemming!s solution), appears to be considerably 
PTT Seen the more obviously annulated part of the cuticle. 
here are no cephalic, somats oe, or eavial eetaee 
‘The eylinarotd neck becomes convex-conoid near the head, the front of which 
when atin in peotite. appears quite ‘dist Linctly conoid in contour, though somewhat ire 
regularly so. | — | | 
DEIRDDS. On the gides of the neck, as far behind the nerve-ring as this latter 
is behind the head end there are two oppos site, short, vointed, conoid, deiride,- ape 
me ee Ce. ame paree tik 
warently with a Gerikral $rojenting eloment  / The base of each deirid occupies a space 
aEpRomtma very sip 5 to three to four annules of the cuticle. The entire height of 
the” ‘eonical, slightly retrorse deirids, about J microns, is approximately three times 
the thickness of the normal cuticle, and each deirid may be described as comprised 
of three parts; a distal extremely fine, acute, Meesereted part, about ¢ microns Long} 
a truncate-conoid middle part of about the same length and eas wide as it is long; 
and a proximal internal hemispheroid basal part a little longer and decidedly wider. 
Thus the whold might be described as a three~jointed sensory organ. 
HEAD. The head is set off by an almost imperceptible expansion at its base; 

