442 MISS M. TURNER ON THE NEMATODE 



female, nuder the nume Triclioce'pludus equi, liad been described 

 by Schrank so long before as 1788. 



Oxyuris curvula has been recorded in the Horse, Ass, and 

 Mule. 



Strongylus vulgaris (Looss, 1901). 

 Strongylus edentatus (Looss, 1901). 



In 1901 Looss recognised the three species of Slrongyhis, 

 i. €., Strongylus vulgaris, Strongylus edentatus^ Strongijlus equinus, 

 which are known to occiu- in the Horse, Ass, and Mule, Of them 

 the first two were represented in the Zebra. 



TRioDONTorHoRus iNTERMEDius Sweet, 1909. 



This species of Triodontoplioriis was first desci-ibed in 1909 by 

 Sweet, whose material consisted of three female specimens 

 obtained from a Horse in Victoria. In 1916 Boulenger found 

 Triodontoj)lioriis intermedius abundantly represented in Horses 

 in Woi'cestershire, England. 



The female of Triodontoplwriis intermedius fi'om the Zebra 

 measure."^ 18-5-21 -5 mm. in length, and the male 15-16 mm. 

 These measurements are slightly larger than those given by 

 Sweet or Boulenger. The sj)icule of the male is long and rather 

 thick. It measures 3'8 mm. in lengtli by about 0-03 mm. in 

 breadth at its proximal end. 



(Esophagodontus robustus Giles, 1892. 



O^sophagodontus rohustus was first discovered in Horses and 

 Mules in India by Giles in 1892, Apparently this Nematode is 

 rare in England, as there is only one previous record of its 

 occurrence here. This was in 1916, Avhen Boulenger obtained 

 about twelve specimens from the colon of a Mare. Its numbeis 

 in the Zebra were sparse. 



In the female O'Jsophagodontus rohustus from the Zebra, the 

 vulva is 2-8 mm. in front of the anus. This measurement differs 

 from that of Giles, who gives "about 1 mm.,*' but confirms those 

 of Boulenger, who gives 2-3-o mm. 



The anus is 0-7-0-75 mm. from the posterior end of the body 

 in the (Esophacjodoniufi rohustus from tlie Zebra. 



(?) CYLicnNOSTOMUM GOLDi Bouleuger, 1916, 



The only previous record of this species was made in 1916 

 by Boulenger, who obtained it from the intestine and ca?cum of 

 several Horses in Worcestershire, England. 



The material obtained from the Zebra, and diagnosed as 

 (?) Oylichnostomum yoldi, consists of a single female specimen. 

 So far as could be asceitained from this female it appears to 

 belong to the species r/oW?, although it is somewhat longer, being- 

 8-35 mm., than the females recorded by Boulenger. In the 

 absence of moi-e material it is impossible to be certain of the 

 species at present. The diagnosis of this female was rendered 



