174 SPOLIA ZEYLANICA. 



hooks; rostellum hooks in forty-five transverse rings with twenty 

 hooks in each ring; hooks of the twelve anterior rings, 0*042, 

 with a long root, those of the thirty-three posterior rings, 0*021 , 

 thorn-like without root. 



Male, 39x0*52; the group of genital organs extends forwards 

 9*48 ram. from the thickened tail end. 



Female, 72 x 0*79; placentulfe ovate, 0*17 x -097; eggs with 

 double shell, the outer shell showing wavy longitudinal lines, 

 0"053 X 0*023 : tail end after copulation carries a layer of cement 

 substance. 



IIL-TREMA.TODA. 



LijperosnititDn. 

 Distomids with long intestinal rami ; testes behind one another 

 and behind them lies the ovary; vitellarium on each side laterally 

 behind the ventral sucker; genital orifice in front of latter. 



32. — Lijperusomum squamatum, n.sp. 

 PI. I., fig. 18. 



(Esophagus of the White-necked Stork, Dissiira cpiscopus ; 

 Gould ; Palatupana. 



Length 4*86, breadth 1*78. Oral sucker 0"59 ; ventral sucker 

 0"87, its middle point lying at the limit of the second and third 

 fifths of the body; the cuticle of the ventral surface alone closely 

 beset with scales; cuticle everywhere very thick; the thickness of 

 the body is to the width as 1 : 2 ; the oesophagus divides after a 

 short course into two intestinal diverticula, the epithelium of 

 which is strongly developed ; they extend to the hinder end ; the 

 genital orifice lies immediately in front of the anterior margin of 

 the ventral sucker; behind this the two testes follow one behind 

 the other and, behind the last testis, the small ovary with the 

 shell-gland ; the vitellaria occur as two tracts behind the ventral 

 sucker occupying about -^ of the body length ; the coils of the 

 uterus lie in the posterior half of the body; the eggs are small and 

 numerous, narrow and elongate, 0083 x 0*036; they present a 

 large double black spot which corresponds with the two ocelli 

 of the embryo ; the cirrus sac is small, destitute of a cirrus. 



33. — Distomum, spec. ? 



CEsophagus of the J) nr ter, Plotus inelanorjasirr, Lin.; Wirawila. 



Only one opaque specimen which could not be determined 

 without sections, thus destroying it ; moreover a single indivi- 

 dual would not have sufficed for the investigation. The genus 

 could therefore not be ascertained since the old genus Distomutn 

 has been broken up into more than 80 genera. 



