212 



DR. M. KHALIL ON THE NEMATODE 



Nerve collar, — The small nerve collar surrounds the thinnest 

 part of the oesophagus '25 mm. from the head end. 



Genital organs. — Male : The convoluted testis gives rise to the 

 ejaculatory duct. This pierces the enormously elongated cement 

 gland to end in the cloaca. 



Female : The female is viviparous ; the embr3^os reach an 

 advanced stage of maturity, and so distend the uterus as to make 

 the examination of other structures difficult. The convoluted 

 ovary is single, and leads to the enormously dilated uterus. The 

 short vagina opens on the surface of the body -06 mm. in front of 

 the anus. The convolutions of the ovary reach within "52 mm. 

 of the head end. 



Text-fiijure 6, 



Leiperenia galehi Khalil. Tail end of male. 



Spictdes. — There are two unequal spicules and an accessory 

 piece. The longer spicule is '25 mm. long; thus it is shorter 

 than that of the type-species. It lies in the axis of the body, 

 midway between the ventral and dorsal surfaces. Near its 

 lower end it bends boldly ventrally to pass into the cloaca. The 

 shorter spicule is 'IS mm. Jong. It is very slightly curved, lying 

 by the side of the terminal portion of the longer spicule. The 

 accessoiy piece is "13 mm. long. It has a thick bulbous end, and 

 is gradually attenuated to end in a sharp point buried in the 

 posterior lip of the cloacal opening. It lies practically across the 

 axis of the body. 



The tail. — The male tail is gracefully curved and is "43 mm. 

 in length. Its end is bluntly rounded. There are a group of four 

 papillse similar to those in L. leiperi. They are situated '17 mm. 

 from the tip of the tail. Two papillte are in the middle line, one 



