2. PHKYNISCUS. 149 



of fingers and toes indistinct ; a very small inner metatarsal tubercle. 

 The hind limb being carried forwards along the body, the metatarsal 

 tubercle reaches the eye, or somewhat beyond. 8kiu smootli, 

 granular on the belly and under the thighs ; a more or l(\ss distinct, 

 narrow, glandular lateral fold ; heel with a triangular dermal appen- 

 dage. Erowu above ; black below, Avith largo white markings ; 

 sometimes the throat and chest white, dotted with blackish. Male 

 with a subgular vocal sac. 

 Chili. 



a-c. (S . Chili. C. Darwin, Esq. [P.], 



(J, e. 2 • Chili. 



f. $. Isle of Quehuy, Chiloe. Dr. Cunningham [P.]. 



';/. Skel., ? . S. America. Sir A. Smith [P.]. 



2. niRYNIOOUO. 



Phryniscus, TTiV/ifni i "VJini i A.»t i la'jj, pi iJGl ; GUnth. Cat. p. 43 ; Cope, 



Joiini. Ac. Pfiilad. (2) vi. 18G7, p. 190. 

 Chaunus, sp., Tschucli, Batr. p. 87. 

 Phryniscus, .sp., Dum. ^- Bibr. viii. p. 722. 

 Ateiopus, Dum. S)- Bibr. viii. p. 6G0 ; Giinth. Caf. p. 48 ; Cope, I. c. 



p. 195. 

 Phrynidiura, Martens, Komenc. Rept. Mus. Zool. Berol. 18-jG, p. 40 ; 



Copi', I. c. p. 196. 

 Hyltemorphus, {Fitzing.) Schmidt, Denhschr. Ac. Wien, 1858, p. 2.j5. 

 Phirix, Sclimidf, I. c. p. 2oG. 



Pupil horizontal. Tongue elliptical, entire and free behind. 

 Palate smooth. No tympanic disk. Fingers free or webbed at the 

 base ; toes more or less webbed, the tips not dilated into regular 

 disks. Outer metatarsals united. Coracoids and precoracoids more 

 or less divergent, connected by the epicoracoid cartilage ; no omoster- 

 lumi ; sternum cartilaginous. Diapophyses of sacral vertebra 

 moderately dilated. Terminal phalanges simple. 



Tropical America. 



Synopsis of the Species. 

 I. First toe perfectly distinct. 



A. Toes not half webbed. 



Snout short, rounded 1. nigricans, p. 150. 



Snout much produced, truncate 2, proho.ici<l ens, ^^.150. 



B. Toes at least half webbed. 



Head as broad as long ; snout longer than 



the diameter of the eye ; toes broadly 



webbed 3. hivis, p. 151. 



Snout not longer than the diameter of the 



eye ; toes entirely webbed 4, seminiferus, p. 152, 



