On the Chelydoid Cbelonians of New Guinea. By G. A. 



Hearing that I was engaged on a revision of the Chelonians, 

 the Marquis Doria has, with very great kindness, handed over 

 to me, for examination and description, his whole material of 

 Papuasian Tortoises. Up to the present day, three species of 

 non marine Chelonians , all three endemic , have been recorded 

 from New Guinea, viz. Platemys nome-guineae, A. B. Meyer, 

 Euchelymys subglobosa, Krefft, and Carettochelys insculpta,, Ramsay. 

 The collection made by M. D'Albertis contains, in addition to 

 the type specimen of Euchelymys subglobosa , an example of 

 Platemys novae-guineae and representatives of what I regard as 

 two undescribed species. In the following lines , diagnoses are 

 given of the four Chelydoids, and descriptions of the two new 

 species. 



1. Emydura, Bp. {Chelymys -f- Euchelymys , Gray). 



1. Emydura albertisii, n. sp. 



Carapace oval, obtusely keeled in the male, convex and very 

 rugose in the female ; the depth of the shell contained twice 

 and a half in its length; nuchal shield well developed. Plastron 

 more than three times as long as the width of the bridge, 

 front lobe obtusely acuminate ; intergular shield nearly twice 

 as long as broad, as broad as or narrower than the gulars. No 

 trace of barbels. Carapace blackish brown above, plastron bright 

 yellow; an olive band on the bridge, bordered on each side by 

 a more or less distinct, festooned, brown band ; soft parts dark 

 brown ; a bright yellow band from the nostril to above the ear, 

 passing' on the upper eyelid; a yellow band on the upper jaw 

 and another on the lower. 



Katow, S. E. New Guinea (L. M. D'Albertis). 



Ann- del Mus. Civ. di St. Nat. Serie 2. a , Vol. VI. (25 Giugno 1888) 29 



