1868.] DR. A. GUNTHER ON NEW BATHACHIANS. 48!) 



One specimen was found by Mr. Baitlctt ou tlie Upper Amazons ; 

 it is 38 millims. long, the length of the hind limb being 60 miilinis. 

 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, lorcal region flat. Vomerine teeth in two short groups 

 between the choanse, which are small. Tympanum hidden, pha- 

 ryngeal 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 exjjosed 

 parts of the limbs brownish grey; a triangular isosceles deep-black 

 spot, edged with white, ou the head and nape, one angle being on. 

 each eyelid, and the third behind the uape. Side of the head and 

 body brown, lower parts whitish. 



due specimen, 2/ millims. long, probably from Brazil ; liiud limb 

 42 millims. 



Hyla rubicundula. (Plate XL. fig. 3.) 



Hyla rubicundula, Ruhrdt. & 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 groujjs, situated immediately behind the level of 

 the narrow choanap,. 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 betweeu vent and heel. Light olive, with numerous parallel 

 brown longitudinal bauds 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 snudl groups, on a level with the 

 hinder edge of the narrow choame. Tongue not notched. Male 

 with a large vocal sac, extending backwards to the sternal region. 

 Upi)er parts smooth. Fingers free, toes half webbed ; disks of 

 fingers and toes rather small. The length of the body is rather 



