182 SPOLIA ZBYLANICA. 



Ophri/oeoti/le. 

 Scolex without rostellum, with five depressions, the margins of 

 which are beset with numerous small hooks ; the margins of the 

 suckers are also armed with numerous small hooks ; genital pores 

 marginal, irregularly alternating or bilateral ; parasitic in birds. 



47. — Ophryocoiyle zeylanica, n.sp. 



PI. II., fi?s. 32-34. 



Intestine of the Ceylonese Hornbill, Lophoccros gingalensis, 

 Shaw; Nedunkeni, Northern Province. 



Length 55; anterior proglottids 0*035 long x 0097 broad^ 

 posterior O'l'i long x 0*70 broad. Scolex, 0*29 long x 0-19 

 broad, club-shaped, the so-called neck behind it, strongly 

 attenuate, 0*079 broad ; no rostellum ; the suckers occur 

 laterally behind the middle of the scolex ; the inner ring 

 enclosing the lumen is beset with very numerous hooks ; at the 

 apex two parallel loops forming five finger-shaped rays whose 

 margins are beset with very numerous small thorn-like hooks 

 without root and lever, measuring 0*0053. 



The cortical zone is very wide and separated from the 

 medullary zone by a transverse muscular layer, outside of which 

 are regularly placed large bundles of longitudinal muscles and 

 farther outside numerous, irregularly grouped, smaller bundles ; 

 two large vessels run ventral in the medullar3' layer forming a 

 posterior anastomosis in each segment ; the nerve occurs near the 

 transverse ml^scles. In the layer between the subcuticular cells 

 and the outer longitudinal muscles lie calcareous bodies. Genital 

 pores marginal bilateral at the anterior lateral margin of the seg- 

 ment ; cirri protruded, 0*19 long and 0*035 broad at the base, they 

 are finely spinulose ; cirrus-sac carries outwardly longitudinal 

 muscles, thereunder circular muscles ; it occupies almost | of 

 the cross-diameter ; numerous testes lie in the medullary substance, 

 about twelve appearing in a transverse section ; the vax deferem 

 is coiled and leads into a sigmoid seminal vesicle which has a 

 narrow lumen and a very thick hyaline wall. 



The vagina courses ventral from the cirrus-sac and the 

 rexeptaculum aeminis reaches almost to the middle of the 

 segment ; the ovary consists of large isolated cells and occupies a 

 large place in the medullary substance, not forming a closed 

 body ; the vitellarium abuts ventrally upon the transverse muscles 

 and is a roundish body of ^^ the size of the cross-diameter ; the 

 eggs are 0*036 by 0*029. 



The genus O/thri/ocof.ij/c hitherto comprised three species : — 

 O. proteiis^ Friis (1869), from Trint/a, CaUidris, Charadrhts. and 



