72 NOTES ON SOME ENTOZOA. 



three pair lying just in front of and laterally to the 

 prominent cloaca, while one pair lies laterally from the 

 sucker of the post -anal papillae ; three pair are almost 

 caudal in position, The sucker is situated at a considerable 

 distance (-194 mm.) in front of the cloaca, and appears 

 as a prominent organ. The spicules are 1-17 mm. in 

 length, and -013 mm. in breadth. The longer male spicule 

 is strongly curved, and has a fairly uniform breadth (-008 

 mm.), but tapers slightly towards the extremity. The 

 length is -48 mm. The shorter spicule has a length of 

 .18 mm., and a breadth (in its midregion) of -012 mm., but 

 the extremity is widened and rounded. 



The uterus contains eggs with vermiform embryos. 



Heterakis bancrofti, n. sp. 



(PI. IV ; Figs. 28, 30). 



The caecum of the brush turkey, Catheturus lathami, 

 is commonly infested by small nematodes, which at first 

 sight remind one of Heterakis papillosa of the fowl. Dr. 

 Bancroft has forwarded me material from the Burnett 

 River district, while Mr. R. Dart has sent me material 

 from Laidley. From all of the specimens, this species of 

 nematode has been taken. It is therefore a common 

 parasite of this host. Occasionally one finds in companj^ 

 with it a much larger Heterakis, described below as H. 

 catheturinus, as well as a Tcenia-like species of Echino- 

 rynchus, or, perhaps more correctly, Gigantorhynchus . 



Heterakis bancrofti has the following dimensions : — 

 male — 4.3 mm. long and -22 mm. broad ; female 6-25 mm. 

 long, and -33 mm. broad. The anterior end tapers gradually 

 while the tail of the female is rather short and sharply- 

 pointed, that of the male being very narrow and delicate 

 (Fig. 30). The vulva is situated at about the middle 

 of the body, the excretory pore at -260- -265 mm. from the 

 anterior end, and the anus (in the female) at -91 mm. from, 

 the posterior extremity. 



There are three prominent lips of equal size, with deep' 

 notches between them. The alimentary canal is of the 

 usual Heterakis type. The nerve ring surrounds the 

 pharynx at -16 mm. from the anterior end, and is situated 

 just in front of the excretory pore. 



