156 
HORN EXPEDITION—AMPHIBIA. 
clevelo])ment of the burrowing Iniljit, to which, in certain cases, 
has been added a capacity for absorbing and holding water. 
The following is a list of the forms obtained, and it will be observed that of 
the three dominant Australian families, viz ;—Cystignathidte, Hylidce and Bufon- 
idfe, no representative of the latter was obtained. 
Family CYSTIGNATHIDiE. 
1. Lininodynasies ornatus, Gray. 
2. Chiroleptes platycephalus, Gunther. 
3. Chiroleptes brevipahnatus, Gunther. 
4. Heleioporus pictus, Peters. 
Family Hylid^. 
5. Hyla rubella^ Gray. 
6. Hyla gilletii, sp.n. 
(1) Limnodynastes ornatus^ Gray. (Plate XIII., Figs. 3, 4. Plate XV., Figs. 18-25). 
The adult. —In its adult condition this frog has little resemblance in form 
to the other species of the genus. It was recorded for the first time from the 
Northern Territory by Gray, under the name of Perialia ornata.* 
In certain points the specimens collected by us (about fifty in number) differ 
from the description given in the British Museum Catalogue. The extreme 
varieties, in the absence of intermediate forms, would scarcely be placed in the 
genus Limnodynastes if the character, “ toes free or slightly webbed,” were insisted 
upon as essential. 
The vomerine teeth are in two sets, with, except in one or two instances, a 
clearly-marked break between them. In rare cases this break is indistinct. 
All the larger specimens possess a character present in L. peronii and L. 
dorsalis but not recorded in L. or?iahis, viz., the presence of a tubercle between the 
first and second and second and third fingers. 
In the younger and smaller specimens, when the hind-limb is carried forward 
the tibio-tarsal joint reaches just to the eye, in the larger forms it does not reach so 
far. 
* Eyre’s Journal Expd. Cent. Aust., I., App., p. 407. PI. ii., fig. 2. 
