276 iJTJPOIflDiE. 



Head small; snout prominent; interorbital space not quite so 

 broad as the upper eyelid; tympanum hidden. Fingers slender, 

 first not extending beyond second ; toes moderate, quite free ; tips 

 of fingers and toes slightly swollen ; subarticular_ tubercles very 

 prominent ; two small metatarsal tubercles ; a conical tubercle on . 

 the middle of the inner edge of the tarsus. The hind limb- being 

 carried forwards along the body, the tibio-tarsal articulation reaches 

 in the middle between the shoiilder and the eye. Upper surfaces 

 covered with very prominent warts ; parotoids none ; lower surfaces 

 smooth, except under the thighs. Greyish olive above, with darker 

 markings; limbs cross-barred; belly spotted with blackish ; throat 

 and breast greyish, with a light median line. (Male with a large 

 subgnlar vocal sac.) 



C. America ; Colombia. 



a. ? . Tehuantepec. Brussels Museum [EJ. 



2. Engystomops stentor. 



Biifo stentor, Espada, An. Soc. Esp. i. p. 84. 



? Bufo (Microphryne) pvistulosus, Peters, Mon. Beii. Ac. 1873, p. 616. 



Peralaimos stentor, Espada, Viaj. Paeif., Vert. p. 163, pi. 2. f. 4. 



Head small ; snout prominent ; interorbital space as broad as the 

 upper eyelid ; tympanum more or less distinct, three fourths the 

 width of the eye. Fingers slender, first extending beyond second ; 

 toes slender, with a rudiment of web ; tips of fingers and toes 

 swollen ; subarticular tubercles very prominent ; two small meta- 

 tarsal tubercles ; a conical tubercle on the middle of the inner edge 

 of the tarsus. The hind limb being carried forwards along the body, 

 the tibio-tarsal artiujlation reaches the eye. Upper surfaces covered 

 with small warts ; a flat, more or less indistinct parotoid ; lower 

 surfaces smooth, except under the thigbs. Blackish brown above, 

 the warts lighter ; a few brown bands across the limbs ; belly and 

 lower surface of limbs largely marbled with blackish brown ; throat 

 and chest brown, with a light median line. Male with a large sub- 

 gnlar vocal sac. 



0. America ; Colombia ; Ecuador. 



a,b. (S . Sarayacu, Ecuador. Mr. Buckley [0.1. 



c. 5 . Oanelos, Ecuador. Mr. Buckley [C.j. 



3. Engystomops petersii. 



Engystomops petersi, Espada, An. Soc. Esp. i. p. 86, and Viaj. Pacif., 

 Vert. p. 160, pi. 2. f. 3. 



Head very small ; snout prominent ; tympanum very distinct, 

 half the width of the eye. Fingers slender, first not extending 

 beyond second ; toes slender, with a rudiment of web ; tips of fingers 

 and toes swollen ; subarticulartubercles very prominent; two small 

 metatarsal tubercles ; a conical tubercle on the middle of the inner 



