8. PHYLLOBATES. 195 



Pupil horizontal. Tongue elliptic or subcordiform, free behind. 

 Vomerine teeth none. Tympanum distinct. Fingers and toes 

 dilated into regular disks, the upper surface of which bears two 

 rounded cutaneous divisions. Outer metatarsals united. Omo- 

 sternum cartilaginous ; sternum a cartilaginous plate. Terminal 

 phalanges T-shaped. 



Tropical America. 



Si/no^isis of the Species. 



1. Belly perfectly smooth. 

 Tympanum three fourths the diameter of 



the eye; snout rounded 1. bicolor, p. 195. 



Tympanum two thirds the size of the 



orbit ; snout rather acute ; a delicate 



fold on the median line of the back . 2. limbafus, p. 195. 

 Tympanum one half the diameter of the 



orbit ; snout rather elongate, narrowed 3. custignailwides, p. 196. 

 Tympanum one half the diameter of the 



eye ; snout broad 4. melanorJiinus, j). 196. 



Tympanum one sixth of orbit ; snout 



depressed 5. lujla'fonnis, p. 196. 



II. Belly granulate. 



Tympanum a little more than one fourth 



the diameter of the eye ; skin covered 



with small tubercles 6. cJialceus, p. 197'. 



Tj'mpanum two thirds tlie diameter of 



the eye ; upper surfaces with small 



warts 7. verrucidatus, p. 197. 



Tympanum one eighth of orbit; snout 



projecting 8. ridens, p. 197. 



1. Phyllobates bicolor. 



Pliyllobates bicolor, Giinth. Cat. p. 90. 

 Phvllobates bicolor, Bibron, in liuinon de la Sat/ra, Hist. Cuba, Itept. 

 pi. 20 bis; Bum. S)- Bibr. p. 638. 



Snout rounded, with rounded canthus rostralis : nostril near the 

 tip of the snout ; tympanum distinct, three fourths the diameter of 

 the eye. Skin perfectly smooth everywhere ; angle of the mouth 

 glandular. An indistinct outer metatarsal tubercle. Whitish ful- 

 vous above ; dark brown or blackish beneath, 



Cuba. 



2. Phyllobates limbatus. 



I'liyllobates limbatus, Cope, Proc, Ac. Philad, 1802, p. 151. 



Snout rather acute ; nostril nearer the tip of the snout than the 

 eye ; tympanum two thirds the size of the orbit. The hind limb 



o2 



