KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 52. N:0 3. 15 
Chelonians. 
Emydura macquarii. GRAY. — A small specimen from Fitz Roy river, N. W. 
Australia, colleeted ”/s 1911, differs so strikingly from the adult according to the 
descriptions in the literature that the present authors took the liberty of consulting 
Dr. F. SIEBENROCK about it, and we are indebted to him for the kind identifica- 
tion as above. 
As the figures (fig. 4 o. 5) prove, 
this young specimen has a strong dorsal 
keel instead of a »vertebral groove». 
The costal shields are also provided with 
short keels. The broadly expanded 
margin is serrated in a very charac- 
teristic manner (conf. the fig.), while 
it is said to be »not or but very feebly . 
serrated» in the adult. The intergu- Fig. 4 & 5. A young specimen of Emydura macquarii 
lar shield has a very characteristic GraAY, nat. size. (A. EKBLOM del.) 
shape, being narrowed in front, nearly twice as long as broad. Mental barbels are 
entirely absent. A light-coloured band extends from the upper half of the eye to the 
upper side of the tympanum ; below the same a dark band between eye and ear. 
