2. Plastron obtusely pointed anteriorly; a 

 yellow band from the nostril to above the 

 ear, passing on the upper eyelid, two others 



on the upper and lower jaw 3- & albertisi p. 319. 



II. The width of the bridge at least one third the 



length of the plastron; barbels present 4. E. sitbglobosa p. 319. 



B. Upper surface of neck with conical, erect tuber- 

 cles; barbels present, conical. 



1. Nuchal absent 5. E. branderhorsti p. 320. 



2. Nuchal present. 



a. Tail longer than the head 6. E. schnitzel p. 321. 



b. Tail shorter than the head 7. E. novae-guineae p. 321. 



i. Emydura macquarri (Gray). 



Hydraspis macquarrii^ Gray, Syn. Kept. 1831, p. 40. 



Emydura macquariae^ Boulenger, Cat. Chel. 1889, p. 230 (s. syn.). 



Emydura macquarrii, Siebenrock, Zool. Jahrb. Suppl. X 1909, p. 583. 



Carapace a little depressed, usually with a distinct vertebral 

 groove, two times and a half to three times as long as high; 

 posterior margin expanded, not or slightly serrated. Nuchal 

 shield well developed ; the shields with longitudinal or vermi- 

 cular rugosities or impressions. Plastron rounded anteriorly, 

 notched posteriorly, more than three times as long as the width 

 of the bridge; intergular shield larger than gulars, not quite 

 twice so long as broad. Head with two small barbels; neck 

 above with round warts. Fore limbs with five, hind limbs with 

 four claws; digits entirely webbed. 



Carapace olive or olive-brown; plastron pale olive; soft parts 

 brownish; a yellow band from the angle of the mouth passing 

 below the ear to the neck. Length of shell 270 mm. 



Habitat: New Guinea (Fly river, Sepik river). Australia: 

 Victoria river, Burnett river, Adelaide, lake George. 



2. Emydura kreffti (Gray). 



Chelymys krefftii, Gray, Ann. Nat. Hist. (5) VIII 1871, p. 366. 



Emydura krefftii, Boulenger, Cat. Chel. 1889, p. 231. 



Emydura krefftii, Siebenrock, Zool. Jahrb. Suppl. X 1909, p. 583. 



Carapace a little depressed, oval, two times and two fifths 

 to three times as long as high, posterior margin less expanded 

 than in the preceding species, not or a little serrated. Nuchal 



