4(U 



MR. R. J. OUTLKPP ON A 



equidistant (text-fig. 3). The cliitinous lining of the funnel is 

 provided with three flange-like cliitinous plates, projecting into 

 the lumen in a longitudinal dii'ection ; each flange is situated 

 about half-way between each pair of tooth-like processes. 



The funnel passes into the oesophageal lumen, which, from its 

 commencement, is triradiate in transverse section, the sides of 

 each ray being strongly cliitinized. The (esophagus (text-fig. 1) 

 is a little less than -^^^ of the total length of the worm ; it is slightly 

 swollen nuteriorly round the funnel; posteriorly it becomes 

 gradually thickened, and assumes the form of a club, its greatest 

 diameter being 11 U ^i. 



The intestine which folloAVS has a dark colour ; it passes 

 straiglit backwards to open to the extei'ior by a short rectum 

 lined internally witli chitin. 



Text-fiirnre 4. 



V.R.- 



'♦■ 7»m, 



Dorso-lateral view of male genital bursa. 

 D.R. = dorsal ray; E.D.R. = externo-dorsal ray; E.L.R. = externo-lateral ray; 

 M.L.R. = medio-lateral ray; P.L.R. = postero-lateral ray; P.P. = prebursal 

 papilla; V.R. = ventral rays. 



The nerve ring is situated just behind the level of the cervical 

 groove, its dorsal part being slightly more anterior than its 

 ventral. 



In the cervical groove, on the ventral sui'face, is situated the 

 opening of the excretory duct ; this duct passes obliquely back- 

 wards and inwards, and in so doing passes over the ventral 

 surface of the nerve ring. 



The male genital hursa is ample, forming about Jg- part of the 

 length of the worm and being nearly twice as broad as it is deep 

 (text-fig. 4). It consists of two lateral lobes united by a small 

 median doi'sal lobe. In each lateiul lobe are situated six lays. The 

 two ventral rays are of the same size, I'un parallel, and are closely 



