488 DR, A. GiJNTHER ON NEAV BATKACHIANS. [JunC 25, 



a little more than the distance between the vent and heel. The third 

 and fifth toes equal in length ; metatarsus with two small tubercles, 

 tarsus without fold. Greyish olive, a black band runs from the 

 nostril through the eye to behind the tympanum ; an indistinct 

 blackish band between the eyes ; anal region blackish, sometimes a 

 black spot in the centre of the back. 



We possess two specimens, of nearly the same size — one received 

 from Mexico through M. Salle, and the other from Mr. Salvin's 

 Vera-Paz collection. Length of body 28 millims., of hind limb 46 

 millims., of fourth toe (from metatarsus) 13 millims. 



Hyla dasynotus. (Plate XXXVIll. fig. 2.) 



Habit slender ; snout very short, depressed, obtuse in front, 

 without canthus rostralis ; loreal region concave. Vomerine teeth in 

 two small groups between the inner nostrils, which are small. Tongue 

 slightly notched behind, with a median groove. Eye large, promi- 

 nent. Tympanum very small, indistinct. Disks moderately deve- 

 loped ; fingers half webbed ; toes nearly entirely webbed. A narrow 

 ■white fringe along the forearm, and along the tarsus. The skin from 

 the occiput along tlie spine to the sacral vertebra is immoveable and 

 covered with warty excrescences ; otherwise the head and body are 

 smooth. The length of the body is rather more than the distance 

 of the vent from the metatarsus. Brownish above, the warty parts 

 of a darker colour ; sides of the abdomen marbled with black and 

 white. A black streak along the canthus rostralis and above the 

 tympanum, a black spot anteriorly below the eye ; a dark cross band 

 between the eyes. Femur deep black, with white ovate spots or 

 cross bars ; fore limbs and lower legs with brown cross bands. 

 Lower parts whitish, throat and especially gular sacs brown. 



One male specimen, with a pair of large gular sacs, from Brazil ; 

 it is 32 millinis. long, the hind limb being 44 millims. 



Hyla rhodoporus. (Plate XXXVIL fig. 4.) 



This species belongs to that group in which the vomerine teeth 

 are placed in two curved series, forming together an arch with the 

 convexity towards the front ; however, the series are less distinctly 

 curved than in the other species, this species being less developed 

 in size than its natural allies. It is very closely allied to H. albo- 

 marcjinaia or H. infulata. The sno>it is much depressed, with the 

 canthus rostralis very obtuse, and the loreal region concave. Eye 

 of moderate size, shorter than the snout. Choanae wide. Tongue 

 scarcely notched behind ; tympanum two-thirds the size of the eye. 

 Fingers very slightly webbed ; toes two-thirds webbed. The length 

 of the body equals the distance between vent and heel, and is thrice 

 the length of the foot. Skin smooth, with numerous minute pores 

 on the upper parts. Light olive-coloured, each pore with a minute 

 rose-coloured dot ; the dots confluent into spots on the eyelids ; no 

 band j\long the canthus rostralis or on the legs, the exposed parts 

 of which are coloured hke the back. Uniform whitish below. 



