444 THE AMERICAN NATURALIST.  [Vor. XXXVI. 
Proboscis very minute and short, extending scarcely more 
than its own diameter posteriorly to the brain (Figs 1,°2;Gp 
Rhynchodzum (Fig. 6, 7) slender; cesophagus separates from 
proboscis just in front of brain (Fig. 6). Anterior chamber of 




WZ, 
———— 



Fic. 7.— C. epialti. Transverse section of body immediately back of brain. The posterior 
chamber of the’ proboscis (c) is firmly imbedded in the surrounding connective tissue. 
TL 1s f th y " * itat (i ) a cesophagus lined with cilia; 
cm, Im, circular and longitudinal layers of muscles; sg, submuscular glands; Zx, lateral 
nerve; zz, integument. x 200. 

proboscis (Figs. 2, 3, ac) very small, not as long as the diameter 
of a brain lobe, lined with thin, scarcely glandular, epithelium. 
Stylet region swollen (Figs. 2-4) and provided with large 
and abundant gland cells (g) which open both into the anterior 
chamber and into the narrow canal connecting this with the 
cavity behind the stylet region. 
Basis of central stylet slender, about three to five times as 
long as broad (Figs. 3-5), measuring about .027—.033 mm. 
in length and .005—.008 mm. in diameter. Basis slightly larger 
posteriorly than at attachment of stylet, often somewhat asym- 
metrical, as shown in Fig. s. Stylet rather slender, a little 
less than half as long as basis, measuring .012—015 mm. in 
length. Basis imbedded among the gland cells and surround- 
ing muscles in a single layer of columnar cells with oval nuclei 
* 
