xx SYSTEMATIC 497 



xvii. P. megacephalus, Baircl, found embedded in the flesh of the head of an 

 Indian crocodile, 0. palustris, the " Mugger." Probably a larval 

 form. 

 xviii. /'. megastomus, Diesing, found in the lungs of a fresh-water tortoise, 



Hydra spis yeoffroya na. 



xix. P. moniliformis, Diesing, found in the lungs of pythons. 

 xx. P. najae sputatricis, Leuckart, found encapsuled in the abdominal 

 muscles and peritoneum of the cobra, Naja tripudians. Probably a 

 larval form, 

 xxi. P. oxycephalus, Diesing, found in the lungs of crocodiles and 



alligators. 



xxii. P. platycephalus, Lohrmann, habitat unknown, 

 xxiii. P. subuliferus, Leuckart, in the lungs of the cobra Naja haji'. 

 \\\v. P. teretiusculus, Baird, found in the lungs and mouth of certain 



Australian snakes. 

 xxv. P. tortus, Shipley, found in the body-cavity of a snake, Dipsadomorphus 



irregularis, taken in New Britain. 



xxvi. Itei'ultardia, sp., Ward, found in the air-sacs of Bonaparte's gull and the 

 common North American tern. 



VOL. IV 2 K 



