Nematodes from East African Hosts, 



221 



apparently no crown of papillae behind the head. The female 

 tail tapers regularly^ the angle not being so acute as in 

 S. ornata as described by v. Linstow, nor so obtuse as in the 

 form described by Gendre. It has a papilla on either side 

 close to the terminal spike (figs. 3 A& 3 b). As regards size, 

 position of excretory pore, etc., the female is larger^ but 

 everything the sexes have in common exists in the same 

 relative position and in the same proportion. The vulva 

 opens in tiie posterior half of the body. The eggs are oval 

 with smooth shells, but vary greatly in size. 



Fio-. 3 a. 



Fig. 3 B. 



Ventral view of female tail, showing 

 anus and papillae. 



Side-view of female tail 



The measurements are tabulated on p. 222 with those of 

 S.^ ornata as described by Gendre and by v, Linstow, and also 



)\'r?^ii ^I'^r^ii ^i ^^'^ g^^oty^^t—Strongyluris hrevicaudata 

 (MuUer) [all these forms occurring in species of Agama]. 



S. hrevicaudata has three pairs of preanal papillae and six 

 pairs of postanal. The measurements of S. gigas are taken 

 from a typical specimen, whilst the ratios are averages of 

 all the specimens examined. Those of S. ornata are^aken 

 respectively from the descriptions of Gendre and v. Linstow, 



