LIOHYLA. 223 
and with sloping sides. Eye equal to its distance from the nostril. Tympanum round : 
in males two-thirds of, or equal to, the size of the eye; in females smaller, sometimes 
equal to only one-third of the eye. Upper parts and sides to a greater or lesser degree 
tubercular, sometimes nearly smooth. Length of the body less than the distance 
between vent and heel. Disks of fingers and toes moderately developed. The two 
inner fingers equal in length. Toes barely one-fourth webbed. One metatarsal 
tubercle; a tarsal fold. Bluish-black above, with very indistinct markings ; or dark 
greenish with black marbling, the snout in front of an interorbital line being of a 
lighter colour. Cross-bands on the thighs, and spots on their hinder sides, rather 
indistinct. Whitish below; throat generally marbled with brownish. Groin and 
lower part of the thighs generally rose-coloured, particularly in the slate-coloured 
individuals. Young and old sometimes with a median white dorsal line. 
Ad. dé. Ad. 2. Ad. 2. 
Distance between vent and snout . 45 millim. 73 wmillim. 65 millim. 
9 % heel . . 49 ,, 81, 73g, 
Length of tarsus and foot . . . . 84 = ,, 59_—C,, 52 sy 
Diameter of tympanum. . ... 4 4, Ao, 4 ,, 
This frog cannot be referred to, or confounded with, Liohyla guentheri, having 
a much narrower web between the hind toes, besides other distinctive characters. 
According to Keferstein, the web of the species described by him leaves free one 
phalanx of the first and second toes, two on the third and fifth, three on the fourth. 
In L. fleischmanni the number of free phalanges is one more on each of the toes. 
It seems to be the most common species at La Palma and in the neighbourhood of 
San José. 
I am indebted to Professor Boettger for direct comparison of some of our specimens 
with the types in the Senckenberg Museum. 
5. Liohyla pittieri, sp.n. (Tab. LXV. figg. B, B’.) 
Hab. Costa Rica (Underwood), Boruca (Pittier de Fahéga). 
Closely allied and very similar to L. fleischmanni. Wabit rather robust, the length 
of the body being a little less than the distance between vent and heel. Snout not 
projecting beyond the mouth, of moderate length, with obtuse canthus rostralis and 
sloping sides. ‘Tympanum round, three-fourths the size of the eye in the male, and 
about one-half in the female. Vomerine teeth as in LZ. fleischmanni. Male with some 
short tubercular folds and small tubercles on the side of the back, female nearly 
smooth. Abdomen smooth, without folds. Disks of the fingers small, of the toes 
moderately developed. irst finger longer than the second. ‘Toes barely one-fourth 
webbed. One metatarsal tubercle ; a tarsal fold. The hinder side of the thighs black, 
with well-defined small round lemon-yellow spots; throat brownish, minutely speckled 
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