226 



T>R. M. KMALIL ON THE NEMATODE 



C/iijle intestine. — The intestine takes a practicallj^ straight 

 couvse in the axis of tlie body. The wall of the intestine is 

 annnlated on the external surface by sJiallow depressions between 

 the cells. Except for a short distance at the beginning and end 

 the whole length of the gnt-wall is deeply pigmented. The 

 rectum is an elongated and narrow canal indefinitely demarcated 

 from the intestine. 



Excretory 7)ore. — The excretory pore is placed just caudad of 

 the nerve-ring in the mid- ventral line. It is •068 ram. from the 

 head end. 



Nerve collar. — This is very thin in comparison with the size of 

 the worm. It is placed "6 mm. from the cephalic end. 



Genital organs. — Male : Tlie testis is irregularly coiled, reach- 

 ing within 5 mm. of the head. Thei"e is no distinct seminal 

 vesicle. The cement gland is of enormous length. 



Female: The wide opening, of the vulva is surrounded by a 

 raised cuticvilar margin. The strongly muscular vagina runs 

 straight towards the head end. The two uteri are convergent, 

 ending in strong ovejectors lying side by side and joining the 

 cephalic end of the vagina. The ovaries are irregularly coiled, 

 reaching within 5 mm. of the head end. 



Bursa. — The biu-sa is very short, and indistinctly divided into 

 three lobes of approximately the same length. It measures 

 •22 mm. in length and '7 mm. in brea.dth. 



Text-fis-ure 19. 



Mursliidia liadia Khalil. 

 Lateral view of biirsn. 



Text-fiirnre 20. 



J 



. k 



'^.S 



Murshidia Jiadia Khalil. 

 Dorsal rajr of bursa. 



The ventral ray is bifid throughout its length, and is placed a 

 considerable distance from the ventral edge of the bursa. The 

 lateral rays arise by a common origin. At the site of their 

 bifurcation each ray has a bulb-like swelling. The externo- lateral 

 ray lies separate from the other two and close and parallel to the 

 ventral ray. It ends in a papilla on the external surface a short 

 distance from the edge of the biu'sa. The medio-lateral and 

 dorso-lateral rays lie close together. The externo-dorsal ray has 



