HORN EXPEDITION-AMPHIBIA. 
173 
(fi) Hyla gil/eni, sp.n. (Plate XV., Figs. 14-17). 
Tongue large, distinctly notched and free behind. 
Vomerine teeth in two distinct groups at the level of the hinder edge of the 
choame. 
Head large, as long as broad. 
Snout broadly truncate and slanting downwards and backwards, so that the 
nares are vertically in front of the anterior edge of the lower jaw. 
Canthus rostralis distinct, the loreal region nearly vertical and somewhat 
concave. 
Interorbital space considerably broader than the upper eyelid. 
Tympanum distinct, from three to four-fifths the diameter of the eye. 
Fingers slightly webbed. 
Toes two-thirds webbed. 
Discs on the fingers larger than those on the toes, and from a half to two- 
thirds the size of the tympanum. 
Subarticular tubercles well developed. 
A well marked inner and small outer metatarsal tubercle developed. 
A distinct fold is present across the chest, and another extending from behind 
the eye over the tympanum to the shoulder. 
The hind limb being carried forward along the body, the tibio-tarsal joint just 
reaches the eye. 
Skin smooth above, granulate beneath. 
Colour green above. A white patch at the hinder and lower edge of the 
tympanum and another on the anterior face of the arm close to the body. White 
spots may be present irregularly scattered along the sides of the body and on the 
auterior face of the hind limbs. 
Length of largest specimen (mature ?) in spirits from snout to vent 63 mm. 
Locality .—Alice Springs. 
I am indebted to Mr. Gillen, of the Alice Springs, for three specimens of this 
frog, which is only obtainable after rain. One specimen was kindly given to me 
whilst at Alice Springs by Mr. Crick. 
