HELMINTHES : COLOMBO MUSEUM. 167 



Male, 25 x '71 ; tail involute ; cirri long ; the left cirrus 

 measured 3*74 mm. in a young specimen of 11'8 mm., i.e. nearly 

 one-third of the body length ; the right cirrus is broader and 

 much shorter, '57 mm. ; on each side tliere are four prge-anal 

 and two post-anal papillae, large and round ; tail rounded, J^- . 



Female, 32 x '95 ; tail rounded, ^^j^ ; vulva lies behind the 

 middle dividing the body in the ratio 7:5; immature eggs 

 elliptical, *044 x '026 ; mature, flattened at the poles, '047 x '029, 

 barrel-shaped, surrounded in front and behind by a raised hoop. 



8. — Sjiiroptera sanguinolenta, Rud. 



From oesophagus of Cams familiar is, L.; Colombo. 

 Cf. A. Railliet, Traite de zoologie medicale, Paris, 1895, pp. 

 536-538, figs. 373-375. 



9. — Spiroptera, spec. ? 



From intestine of Long-tailed Robin, Gittacincia macroura, 

 Gmel.; Nedunkeni. 



One entire and one half specimen spirally wound, not to 

 be identified. 



10. — Spiroptera, spec. ? 



From oesophagus of Pavo cristatiis, L. ; Butfcuwa. 

 Three imperfectly preserved fragments. 



11. — Siriroptera, spec. ? 



From peritoneum of Sciurus pabaaram, L.; Colombo. 

 Fragments of a female. 



12. — Heterakis pusi/.la, n.sp. 

 PI. I., fig. 9. 



From rectal cceca of Jungle Fowl, Gallus Lafayetti ; Mamadu, 

 Northern Province. 



Head with small roundish lips ; cuticle smooth ; cesophagus 

 thickened, club-shaped behind, in the male ^-, in the female ~^. 



Male, 5 x 0-19 ; tail ^^, finely pointed, adhering to the ventral 

 side by a granular, opaque cement ; cirri very unequal, the 

 left 0-53, the right 0-15 ; in front of the cloacal orifice a round 

 sucker, and behind this, on each side, four large post-anal 

 papillae, of which the last lies at a greater distance from the 

 third than the three anterior from each other. 



Female, 513 x 0*24 ; tail ^, very long and pointed ; vulva 

 far behind the middle, the prae-genital region to the post-genital 

 region as 12 : 5 ; eggs, thick-shelled, 0-065 x 0-031. 



