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IIOKN EXPEDITION—AMPHIBIA. 
Two specimens are mature, one a male and the other a female. There is no 
difference between them, except that in the male the webbing of the toes is very 
slightly less than that in the female; but the difference is so slight that it may be 
due to a greater contraction caused by the spirit in the one case than in the other. 
With regard to its habits we know nothing as yet. The fact that it is found 
after rain may possibly indicate that it lestivates in burrows, but there is no direct 
evidence of this. 
Hyla rubella is found in and around water-holes at Alice Springs during the 
dry season, when no trace of Hyla gilleni can be found. 
I have much pleasure in as.sociating with this species the name of Mr. Gillen, 
to whom I am indebted for very valuable assistance in many ways. 
EXPLANATION OF PLATES. 
Plate XI II. 
Fig. 1.— Chiroleptes plafycephalus. Life size drawing of a specimen captured 
shortly after a heavy fall of rain, to show the brighter colouring- 
present at this time. When aestivating the animal is a dull 
yellow. 
,, 2.— Heleioporus pictus. Life size drawing of a specimen captured shortly 
after a heavy fall of rain. At other seasons the orange colour 
is wanting, and the brighter green changes into a dull olive. 
,, 3.-— Limnodynastes ornatus. Showing the typical pattern. A small 
specimen, life size. 
,, 4.-— Limnodynastes ornatus. Life size drawing of a specimen taken from 
a burrow in the sandy bed of the Finke River showing the 
usual colouration. 
Plate XIV. 
Fig. 5.— Chiroleptes platyceplialus. Advanced tadpole from the dorsal sur¬ 
face. X 1 . 
,, G .—Chiroleptes platyceplialus. Younger tadpole seen from the ventral 
surface. x 1. 
„ 7.— Chiroleptes platyceplialus. Young specimen. x 1. 
