rARASlTIC NEMATODES FROM TROPICAL AFRICA. 



Text-%. 142. 



553 



an.-;-:^ 



Cylindropliarynx longicauda. 

 Explanation of individual figures as in text-fig. 14.1. 



The oral aperture is quite tei^minal, and is surrounded by a well 

 developed corona radiata highly reminiscent of that found in the 

 species Strongylus equinus. The number of leaves in the external 

 crown could not be determined exactly. The internal crown 

 was distinctly visible as a series of comma-like projections, 

 apparently corresponding in number to those of the external 

 crown. The oral capsule is a wide pear-shaped cavity, the 

 anterior third of which is surrounded by a thick wall of 

 cuticle, the posterior two-thirds being almost entirely replaced by 

 a layer of oesophageal musculatui^e, which is however covered by 

 a thin layer of cuticle bearing a large number of round cuticular 

 knobs that project into the buccal cavity. The oesophagus mea- 

 sures 1"25 mm. from the base of the cuticular portion of the 

 buccal capsule to its termination in the chyle intestine. Where 



