TRICHOSTRONGYLUS PROBOLURUS 



435 



tail, placed longitudinally, 50 //, to 55 yu, long, always shorter than 

 the unpaired portion of the canal formed by the union of the two 

 ovejectors ; anus 0*055 to 0*07 mm. distant from tip of the tail; 

 ova 73 p to 80 p by 40 ^ to 43 //,. 



This species lives in the duodenum, exceptionally also in the 

 stomach of Or is aries, 0. laiicanda, Antilope dorcas, Camelus drome- 

 darins (Egypt), Cynocephaliis hamadryas (North Africa), sheep and 

 goats (France), and has been found by Looss in bodies of fellaheen 

 at Alexandria and in the stomach of a Japanese female by Ijima. 



Trichostrongylus probolurus, Railliet, 1896. 



Syn. : Strongylus probolurus, Railliet, 1896. 



Male 4'5 to 5*5 mm. long, in front of bursa 0*08 mm. thick ; 

 spicule 0*126 to 0*134 mm. long, gubernaculum 0*075 to 0*08 mm. 

 long. Bursa : latero-anterior rib thickest ; antero-external thicker 

 than antero-median, postero-median and postero-external very short 

 and close together. Female 4*5 to 6 mm. long, vulval opening 



1*08 to 1*25 mm. from tip 

 of tail, placed longitudinally, 

 and slightly curved, 76 p long, 



FIG. 312. Trichostrongylus probolurus : 

 spicules and gubernaculum of male ; on 

 left, ventral view ; on right, lateral view, 

 x c. 300. (After Looss.) 



i;v. 



FlG. 311. Trichosirongylus probolurus : tail of 

 male from left side, d., posterior; e.d., postero- 

 external ; p. I., postero-median ; m.t., antero- 

 median ; e.L, antero-external; t.v., latero-anterior; 

 v.v., antero-anterior ; gub., portion of guberna- 

 culum ; sp., portion of spicules. X c. 300. 

 (After Looss.) 



always longer than the unpaired portion of the ovejector ; anus 0*040 

 to 0*05 mm. distant from tip of tail. Posterior end thick, point of tail 

 short. Ova 76 //, to 80 yu, by 43 yu, to 46 JJL. 



Habitat. In the duodenum of Ovis aries, 0. laticanda, Antilope 

 dorcas, Camelus dromedarins (Egypt) and occasionally also in man 

 (Egypt). 



Trichostrongylus vitrinus, Looss, 1905. 



Male 4 to 5*5 mm. long, in front of bursa 0*085 mm. thick. 

 Bursa larger than in the other two species, antero-external rib thickest, 



28 



