228 



DR. M. KHALIL ON THE NEMATODE 



Discussion. 



The main specific diffei'enees between the members of the genus 

 JIurshidia are to be found in the shape of the I'ays of the male 

 buiv^a, the length of the spicules, the length of the female tail, and 

 the distance between the vagina and the anus. These and other 

 differences are for convenience tabulated below. 



Upon these data the specie.s Miirshidla liiistovn was differen- 

 tiated. 



Railliet, Henry and Bauche have recorded the presence of 

 Murshidia falcifera in the African elephant. This was probably 

 eith".r M. had.ia or Ihistowi, which bear a superficial resemblance 

 to M. falcifera. 



In the follow^ing table all measurements given are in millimetres. 

 The measurements of M. marshida and M. falcifera are based 

 partly on Lane's record and partly on material of both species 

 sent by him to Prof. Leiper. These specimens ai'e labelled by 

 Lane as type material of the respective species. The measure- 

 ments of M. linstowi are based on the oi'iginal record of this 

 species by von Linstow. Where the sex is not stated, the 

 measurements ai-e put in the centre of the column. 



Table I. 





M . murshida. 

 -f India. ^ 



o • ^ ■ 



Il.falcifera. 

 * India, o 



• T • 



M. linstowi, S]).u. 

 J, Africa, p 



if. Jiadia. 

 - Africa, n 



Total length 



mm. mm. 

 18-20 22-28 



mm. mm. 



22-25 28-30 



mm. mm. 

 25 29 



mm. mm. 

 18^5 24 



Maximum diameter 



•6 -9 



•74 1^05 



•97 !•! 



•67 -82 



(Esophagus 



•o -52 



•88 -55 



•97 -8 



•85 ^9 



Nerve collar 



•3 -31 



•48 ^52 





•6 •e 



Diameter of head 



•17 

 60 



•23 



80 





•2 



Rays of leaf-crown 



40 



Diam. of mouth capsule . 



•08 



•1 





•15 



Length of spicules 



1-28 



lo5 



•96 



11 



Tail of female 



1-6 

 2-3 



2-1 

 2-9 



3^1 

 4^3 



2^25 



Vulva from tail end .... 



2^85 



Ova 





•05X-03 



•052 X -024 



•04 X -023 



Cuticular striatioii 



•007 



•007 



•01 



•009 



Cervical papillte 



•85 



1^2 





1^14 1^4 



Exxretory Dare 



•8 



l^Oo 





•68 







Genus Ohoniangium Raill., Henry &, Bauche, 1914. 

 Asifia Lane, 1914. 



Fairly stout, straight worms ; the head is oblicpieh^ truncated 

 dorsad. The oral opening is directed towards the dorsal surface. 



