164 Parasitic Aphelenclii 
The intestine (Figs. 1, 13 and 14, 1) is thick and patent; walls without cell limits but 
containing numerous nuclei, droplets and granules; staining reaction basophil; the lumen 
is sinuous, flattened and slit-like, contrasting with the round lumen of the posterior 
oesophagus. The rectum (Fig. 1, liE) is one half to two-thirds as long as the tail. 
Nerve ring and oesophageal collar. The nerve ring (Figs. 1, 9 and 10, N) is situated behind 
the oesophageal bulb at a distance rather greater than the length of the bulb. The oeso¬ 
phageal cellular collar (Figs. 1 and 6-12, CA, C.P.) is an ingrowth from the four longitudinal 
lines (Fig. 8, C.P.) and clothes the oesophagus throughout its whole length; it contains 
many nuclei, of which two or four situated immediately behind the bulb (Figs. 1 and 6, CN) 
are particularly large and prominent; the function of the collar is probably nervous, it, 
together with the nerve ring, representing the central nervous system of the animal. 
Fig. 3. Aphelenchus phyllophagus n. sp. Posterior two-thirds of male, showing gonads. 
14 
Figs. 4-14. Aphelenchus phyllophagus n. sp. Transverse sections in series. 
Figs. 4, 5. Through the oesophageal bulb. 
Figs. 6-8. Between the bulb and the nerve ring. 
Figs. 9, 10. Through the nerve ring. 
Figs. 11, 12. Between the nerve ring and the end of the oesophagus. 
Fig. 13. Through the intestine in front of the gonad. 
Fig. 14. At the commencement of the ovary. 
