HBLMINTHBS : COLOMBO MUSEUM. 173 



thin tore body and thick hind body ; eggs barrel-shaped ; 

 belongs to the Pleuromyaria, with muscles in place of the lateral 

 tields ; in the coecum of mammals. 



30. — Trichocephalus discolor, n.sp. 

 PI. I., figs. 13-14. 



From Bon i/idicus, Colombo ; said to have occurred in the 

 stomach. 



Cuticle annulate at intervals of 0*0091 mm.; contours, at the 

 fore body, serrate. 



Male white, 45 x 0*14 in front, 0'55 behind; cirrus sheath 

 spinose ; cirrus long and narrow, of even width except at the 

 rounded apex, 1*76 x O'Oll ; hence not to be confounded with 

 T. affinis, Rud., from Bos taurus. 



Female, 50 x 0-13 in front, 0*67 behind ; fore body white, hind 

 body yellow ; eggs 0'065 x 0*031, with large spherical opercula 

 at the poles. 



Tetradenos tiara, v. Linst. 



In Spolia Zeylanica, vol.1., 1904, p. 102, I described a Nematode 

 from Varanus hengalennis under the name Ctenocephalus tiara. 

 It happens that Tholenati gave the name Gtenocephalus to a 

 Dipteron in the year 1857, and I have therefore altered the 

 generic name of the Nematode to Tetradenos. 



Of. Arch, f . Naturg., Berlin, 1904, p. 301. 



II.— ACANTHOCEPHALA. 



Echinorliy nchus . 

 Nemathelminthes without intestine ; at the head a proboscis 

 beset with hooks which can be retracted into a proboscis sheath, 

 alongside which are two lemnisci (fluid reservoirs) ; male with two 

 testes, six cement glands (" prostate "), and a protrusible, bell- 

 shaped bursa with penis ; female with a ligament in which the 

 placentulse arise ; the mature eggs are passed through the 

 sphincter apparatus of the bell-shaped uterus into the vagina ; 

 the species live in the adult condition in the alimentary canal of 

 vertebrates. 



31. — Echinorhynchus tener, n.sp. 



PI. I., figs. 15-17. 



Intestine of the Serpent Eagle, Spilornis cheela, Daud. ; Nedun- 

 keni, Northern Province. 



Body extended very long, delicate and fragile, head feebly 

 thickened ; rostellum broad and short, thickened in front, 0*43 x 

 0-39 (in front), the so-called "neck," 0*28, closely covered with 



