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Show 1868.] DR. A. G U N T H E R O N N E W B A T R A C H I A N S . 489 One specimen was found by Mr. Bartlett on the Upper Amazons ; it is 38 millims. long, the length of the hind limb being 60 millims. Another example, from Surinam, appears to belong to the same species. HYLA TRIANGULUM. (Plate XXXVIII. fig. 4.) Similar in habit to //. arborea. Snout short, as long as the diameter of the eye, which is of moderate size. Canthus rostralis angular, loreal region flat. Vomerine teeth in two short groups between the choanae, which are small. Tympanum hidden, pharyngeal tubes very narrow. Disks moderately developed ; fingers half webbed ; toes three-fourths webbed. Length of the body rather more than the distance between vent and heel. Back and exposed parts of the limbs brownish grey; a triangular isosceles deep-black spot, edged with white, on the head and nape, one angle being on each eyelid, and the third behind the nape. Side of the head and body brown, lower parts whitish. One specimen, 27 millims. long, probably from Brazil; hind limb 42 millims. HYLA RUBICUNDULA. (Plate XL. fig. 3.) Hyla rubicundula, Rnhrdt. & Liitk. Vid. Medd. nat. Foren. Kjobenh. 1862, p. 197 ; Hensel, Wiegm. Arch. 1867, p. 158. Slender; snout moderately obtuse, with angular canthus rostralis, and with the loreal region subvertical. Eye of moderate size, nearly as long as the snout; tympanum very small, distinct. Vomerine teeth in two small groups, situated immediately behind the level of the narrow choanal. Tongue not notched. Vocal sac of the male extending to the sternum. Upper parts smooth. Fingers slightly but distinctly webbed ; toes half webbed. Disks of fingers and toes rather small. The length of the body is rather more than the distance between vent and heel. Light olive, with numerous parallel brown longitudinal bands on the body and limbs ; these bands proceed from the snout, are unequal in width, and more or less distinctly edged with white ; the broader of the bands are sometimes broken up in series of ovate spots. A blackish band, edged with white above and below, and longitudinally traversed by another white band, from the nostril to the loin. Southern parts of Brazil. HYLA LEUCOT^ENIA. (Plate XL. fig. 4.) Moderately slender; snout rather obtuse, with angular canthus rostralis, and with the loreal region subvertical. Eye of moderate size, not quite so long as snout; tympanum very small, not very distinct. Vomerine teeth in two small groups, on a level with the hinder edge of the narrow choanae. Tongue not notched. Male with a large vocal sac, extending backwards to the sternal region. Upper parts smooth. Fingers free, toes half webbed ; disks of fingers and toes rather small. The length of the body is rather |
