NEMATODK GENUS PHYSALOPTERA. 1099 



Tail of male straight. Four pairs of lateral stalked papillae ; a 

 pair of sessile papillse in front of anus and 3 pairs post-anal : 

 of these latter the last pair is situated at about the junction of 

 the last tail thirds, and the other two pairs are situated close 

 together just in front of the middle of the tail. 



In the largest females the vulva is 10 mm. from the anterior 

 end. Posterior part of body spirally coiled and tail slightly bent 

 dorsal wards. 



Host : AmpMshama sp. Stomach. Brazil. 



(79) Physaloptera Antarctica v. Linstow, 1899. 



Length of male 27 mm. by '79 mm. thick ; female 42 mm. long 

 by 1"18 mm. broad. 



Two lateral lips, somewhat rounded ; each beai-s a conical 

 outer tooth and two small inner side teeth. 



(Esophagus of male l/8'3, of female l/8'6 of body-length ; tail 

 of male l/23rd, of female l/54th of body-length. Male cloacal 

 aperture large and rounded, and on either side of it four papillae 

 with long stalks. Thirteen ventral papillse, of which 3 are pre- 

 anal, 4 just behind the anus in two rows, 2 on either side behind 

 each other in middle of tail, and further back another one on 

 either side. 



Tail of female conical, with rounded tip ; eggs very thick- 

 shelled, 54-44 X 42-31 /x. 



Hosts : Acanthophis antarctica. S. Australia. 



Cyclodus occipitalis. Oesophagus. S. Australia. 



I have identified this species with my specimens from Varanus 

 varius and Python spilotes. 



(80) Physaloptera alba Stossich, 1902. 



Male 25-28 mm. long; female 42 mm. long. 



Weakly-developed lips, each with two large submedian papillae 

 and with very weak teeth. 



Male bursa lanceolate, with minute ornamentations on its 

 ventral surface. Four pairs of lateral papillae with long peduncles. 

 Five paiis of ventral papillae arranged in two groups, viz. three 

 pairs towards the end of the tail and two pairs just behind 

 the anus, of which the outer pair has double pulps. 



Tail of female conical. Vulva at the anterior third of the 

 body. Eggs embryonated, elliptical, with very thick shell. 



I have identified this species with Ph. antarctica v. Linst., 1899. 



Host: Cyclodus hoddaertii. Proventriculus. Nuova Olanda. 



(81) Physaloptera amphibia v. Linstow, 1899. 



Male 12 mm., female 18 mm. long by 1"05 mm. broad. 



Two half-rounded lips. External tooth large and cone-shaped, 

 internal tooth small and tripartite. (Esophagus l/4'4 in the 

 male and 1/8' 3 in the female of the body-length. 



