NEMATODA IN THE COLOMBO MUSEUM. 101 



19. — Oxyuris poculuni, n.sp. 

 PI. II., figs. 19-21. 



Passed by ponies on Iranativu. Presented by G. W. Sturgess, 

 Esq., M.R.C.V.S. 



This species is nearly related to OxyuiHs curvula, Rud., having 

 the same form as the latter ; the mouth is hexagonal with two large 

 lateral papillae in contradistinction to the six papilla of O. curvula ; 

 the oesophagus in the male occupies 7T7 of the total length, termi- 

 nating in a bulbus ; the ducts of the three oesophageal glands 

 lie quite anteriorly in the lumen of the oesophagus, and are cup- 

 shaped with denticulate margin, whereas in O. curvula they 

 are tubular. 



The male is 14-2 mm. long by 0*99 mm. in diameter ; the 

 cirrus is 0*44 mm. long, finely acuminate ; the tail carries four 

 papillae, of which two lie at the posterior angles of the quadrangular 

 portion of the body and two are placed ventrally. The six median 

 papillae of O. curvula are absent in the present species. 



The female has a long filamentous hind body, and attains a 

 length of 65 mm. and breadth of 2'57 mm. ; the eggs have a 

 double shell ; the outer shell is perforated at one pole, the orifice 

 being closed by a plug ; the eggs measure 0*081 mm. by 0*047 

 mm., those of O. curvula being 0*099 mm. by 0*042 mm. 



'lO.—Oxyui'is acanthura, n.sp. 

 PL II., fig. 22. 



From rectum of Calotes versicolor, Dum et Bibr., Colombo. 



Head rounded, without lips and papillae ; the oesophagus is long 

 and narrow, ending behind in a strong bulbus ; in the male it is 

 4^ of the total length, in the female J ; the intestine is wider 

 than the oesophageal bulb ; the cuticle is deeply ringed. 



The male (2*29 mm. by 0*37 mm.) has a rounded tail end 

 with a curved process bearing on each side one papilla, while the 

 body has two papillae on each side ; the cirrus measures 0*065 mm. 



The female is 5*84 mm. long and 0*55 mm. broad ; the rounded 

 tail, -^ of the body length, ends with a style-shaped process ; the 

 vulva lies behind the mid-body, dividing the body in the propor- 

 tion of 7 : 5. Eggs were not mature. 



The species has affinity with Oxyuris hrevicaudata^ Duj., from 

 Ascalobotes fascicularis. Parona* refers to an unnamed Oxyuris 

 from Calotes, spec, with a length of 20 mm., the vulva opening in 

 the anterior third of the body. 



* Elminti di Birmania. Ann. Mus., Geneva, ser. ii.. vol. VII., 1890, p. 771. 



