new Siamese Nematode, 



109 



(tig. 1, Oes. 1.) is slight!}'- longer tlian broad, and has a 

 thick ciiticular lining. The posterior division (fig. 1, Oes. 2.), 

 or oesophagus proper, bears an oval swelling just in front 

 of the posterior bulb, the swelling and the bulb together 

 corresponding to the hourglass-shaped third portion of the 

 oesophagus described by Lane for F. falcata. There is a 



Fiff. 1. 



Oes 



Oes. 2 



Falcuiistru siaviensis. Dorsal view of head and anterior part of 

 oisophaj^eal region. 



B.C., buccal cavity ; L'.R., cuticular rinj;' ; N.P. L, outer brauch of pulp 

 of papilla ; Oes. 1, Oes. 5, anterior and posterior portions of 

 oesophagus. 



considerable dilatation of the intestine at the point where 

 it joins the oesophagus. 



The cervical papilUe are very small, but prominent, nipple- 

 like organs, .'situated at about the middle ol: the cesophageal 

 region, and therefore at a considerablo relative distance from 

 the anterior end. The excretory pore, as in /''. falcata, is 



