Pseudophilautus halyi (Boulenger 1904)

Known only from the male holotype, 27.7 mm (Boulenger 1904). Distinguishing characteristics from Manamendra-Arachchi and Pethayigoda 2005, in their key to Sri Lankan species of Pseudophilautus: Tarsal fold absent. Tympanum visible. Skin on head not co-ossified. Toes webbed, but medially rather than fully. Supernumerary tubercles on palm present. Tarsal tubercle absent. Canthal edges rounded. Hands not webbed, no black band on snout. Supernumerary tubercles on foot present. Crossbars on limbs absent, supratympanic fold prominent. Other morphological features include the following: Head dorsally convex. Loreal and internarial regions concave. Lingual papilla and vomerine teeth absent. Dermal fringe on fingers. Dorsal surfaces tuberculate, shagreened with glandular warts. Throat, chest, and belly are granular. A median dermal ridge runs from the tip of the snout to the vent. Males have nuptial pads on the dorsal and inner side of the prepollex and Finger I, and internal vocal slits (Manamendra-Arachchi and Pethayigoda 2005). The color in alcohol is uniform brown except for the pale yellowish brown venter (Manamendra-Arachchi and Pethayigoda 2005). Coloration in life is not known.

Endemic to Sri Lanka and was only known from the general type locality "Pattipola, Ceylon" (Boulenger 1904; Stuart et al 2008).

Pseudophilautus halyi has not been recorded since the collection of the holotype in 1899 (Boulenger 1904), despite extensive searches, and is presumed extinct. it is believed to have been a direct developer, like other species in the genus Raorchestes (Stuart et al 2008).

It is believed that habitat loss led to the decline and eventual extinction of this species (Stuart et al 2008).