I9I4-1 F- H. Stewart : Indian Hc/niinthology, No. 1 . 177 



latter contains three semi-circular thickenings of the cuticular 

 lining constituting a grinding apparatus. 



The intestine presents no features of note. 



No oesophageal nerve ring or ventral pore have been observed. 



Reproductive organs of male. — Three pairs of simple papillae 

 referrred to above, in the anogenital region, two preanal, one post- 

 anal. Spicules two unequal (fig. 48). Right, short, -0925 mm. 

 measured in a straight line from head to tip and '0042 mm. in 

 maximum breadth, nail-shaped with a distinct closed head. Left, 

 long, -187 mm. in length, '005 mm. in breadth, simple tubular, 

 narrowing toward the tip, with head sHghtly expanded, open and 

 receiving insertion of a retractor muscle. 



Testis single tubular. Fundus lying dorsal to alimentary 

 canal '68 mm. from head. Cells at fundus spherical. As it passes 

 backward the tube curves round the left side of the intestine to 

 assume a ventral position, the cellular contents are large square 

 cells with large round distinct nuclei. At a distance of about 

 •25 mm. from the fundus the cells change abruptly in appearance, 

 the protoplasm becomes filled with small granules. A long simple 

 vas deferens, lying in front of intestine and spicules, leads into 

 the cloaca. 



Female reproductive organs (fig. 46). — In immature specimens 

 (measuring -217 mm. in length) the female gonads are represented 

 by a flattened and elongated group of cells lying ventral to the 

 intestine. The cells are large and angular and contain large spheri- 

 cal nuclei. In the adult (263-3-o6 mm.) only a single functional 

 ovary is to be found, which is conical in shape, the apex of the 

 cone (the fundus) directed backward. The cellular contents are 

 of the usual type, ova broad and disc-shaped at the junction of 

 ovary and'caecum. The caecum contains two large ova and also a 

 considerable number of other smaller cells which appear to arise 

 from proliferation of the wall cells. Attached to the anterior end 

 of the caecum is a cellular appendix possibly representing a second 

 ovary. The opening of the caecum into the uterus lies close to the 

 ovarian opening. The uterus is an elongated spindle-shaped sac. 

 At its anterior extremity its walls are thickened to form a 

 sphincter. In young adults it contains spermatozoa — sometimes 

 in large numbers. A cellular gland surrounds the junction of the 

 uterus and the caecum. In older specimen (3*06 mm.) the uterus 

 contains from 6-8 larvae, some doubled on themselves, others fully 

 extended but never coiled or enclosed in a shell. The larvae dis- 

 tend the uterus from the sphincter to the vulva. 



The following species of Atractis have been described up to 

 the present :— 



(i) Atractis dactylura D\i].,homTestudo graeca. (Dujardin 

 —(3) P- 654. Diesing (2) ii, p. 151. Schneider (19), p. 124. V. 

 Linst. (II), p. 516. 



This species has a two-horned uterus and only one oesophageal 

 bulb— Schneider. The porus excretorius is very prominent and 

 surrounded by a ring of chitinous rods — v. Linst. 



