220 CYSTIGNATHID®. 
43, Hylodes sulcatus. 
Hylodes sulcatus, Cope, Proc. Ac. Philad. 1874, p. 126. 
Tongue round, entire. Vomerine teeth in two short curved series 
entirely behind the choane, and not extending outwards beyond 
their middle. Head very wide; a strong ridge extends along the 
superciliary border to the posterior border of the cranium, enclosing 
a groove with its fellow ; tympanum vertically oval, a little smaller 
than the eye. Fingers very short, without disks; toes with well 
marked disks. The hind limb being carried forwards along the’ 
body, the tibio-tarsal articulation reaches the nostril. Skin of upper . 
surfaces rugose, with numerous short, generally symmetrical folds, _ 
two of which cross the suprascapular region, two on the sides, two 
on each side of the back, &c.; belly granular. Deep brown above, 
white below; a pale spot below the interval between orbit and 
tympanum ; limbs cross-barred ; femora pale, marbled behind. 
Nauta, Upper Amazon. 
44, Hylodes biporcatus. 
Strabomantis biporcatus, Peters, Mon. Berl. Ac. 1863, p. 405; Espada, 
An. Soc. Esp. i. p. 85. 
Limnophys napzeus, Espada, Jorn, Sc, Lis, iii. p. 60. 
Tongue entire. Vomerine teeth in two arched series behind the 
choanze. Head large, broad, with bony ridges; canthus rostralis 
distinct ; nostril equally distant from the eye and the tip of the 
snout ; eyes obliquely directed forwards ; interorbital space deeply 
concave, the edges of the fronto-parietals being prominent, crest- 
like ; tympanum very distinct, a little smaller than the eye. First 
finger longer than second; toes with a rudiment of web; tips of 
fingers, not of toes, slightly though distinctly dilated ; subarticular 
tubercles very prominent; two metatarsal tubercles, the inner 
elongate, very prominent, the outer rounded and very small. ‘The 
hind hmb being carried forwards along the body, the foot extends 
beyond the tip of the snout. Skin smooth, minutely glandular; a 
few very small pointed warts on the upper eyelid; belly granular. 
Dark brown above, with a few black yellow-edged spots; beneath 
brown, dotted with yellow, or brown-and-white marbled. 
Veragua; Ecuador. 
45. Hylodes cornutus. 
Limnophys cornutus, Espada, Jorn. Sc. Lisb. iii. p. 60. 
Strabomantis cornutus, Espada, An, Soc, Esp. i. p. 85, and Viaj. Pacif., 
Vertebr. pl. 3. f. 4. 
Tongue heart-shaped. Vomerine teeth in two arched series 
behind the choane. Head large, broad; canthus rostralis distinct ; 
iterorbital space deeply concave, the edges of the fronto-parietals 
