206 CYSTIGNATHID^. 



10. Hylodes griseus. 



Hyla grisea, Halloiv. Proc. Ac. PMlad. 1860, p. 485. 



Hvlocles griseus, Cope, Proc. Ac. Philad. 1863, p. 48 ; Steindachn. 



^Verh. zooJ.-hot. Ges. Wien, 1864, p. 245, pi. 17. f. 2. 

 P Hylodes fenestratus, Steindachn. I. c. pp. 249 & 552, pi. 10. f. 1. 

 Hylodes, sp. ?, Hensel, Arch. f. Naturg. 1867, p. 161. 

 Hylodes lienselii, Peters, Moh. Perl. Ac. 1870, p. 648. 



Tougue oval, emarginate. Yomerine teeth in two short oblique 

 scries behind the choancG. Snout rather elongate and rounded, 

 longer than the orbital diameter; canthus rostralis strong; tym- 

 panum one fourth the extent of orbit. Disks of fingers and toes 

 moderate ; a single metatarsal tubercle. The hind limb being 

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

 the tip of the snout. Skin of belly smooth, A W-shaped spot on 

 the occiput ; limbs ci'oss-barred. 



Brazil. 



11. Hylodes bocourtii. 



Hylodes bocourti, Brocchi, Bull. Soc. Philom. (7) i. p. 130, and Mi&s, 

 Sc. Mex., Batr. p. 50, pi. 16. f. 2. 



Tongue subcii'cular, entire. Yomerine teeth in two small groups, 

 close to the hinder edge of the choange. Snout rounded, with rounded 

 canthus rostralis ; tympanum distinct, one third the diameter of the 

 eye. First and second fingers of nearly equal length ; toes with a 

 rudiment of web ; disks rather developed ; a single metatarsal 

 tubercle. Hind limb long. Skin smooth. • xV black temporal spot ; 

 two small black spots behind the scapuloe ; arms marbled with 

 black ; hind limbs marbled with brown ; greenish white beneath. 



Cohan, Guatemala. 



12, Hylodes augusti. 



Hylodes augusti, {Duqcs) Brocchi, Bull. Soc. Philom. (7) iii. p. 21, 

 and Miss. Sc. Mcr.', Batr. p. 52, pi. 16. f. 1. 



Tongue subcircular, slightly nicked behind. Yomerine teeth in 

 two small groups somewhat behind the choanoe. Snout short, 

 rounded; nostril near the tip of the snout; tympanum distinct, 

 smaller than the eye. First finger longer than second; tips of 

 fingers and toes truncate ; (when at rest, this animal is said to bend 

 its fingers and toes in the same way as a man bends his fingers in 

 playing on the pianoforte, a position which I have noticed also in 

 llillocles leptopus ;) two metatarsal tubercles. Skin minutely tuber- 

 cular above, smooth beneath. Light yellow above, spotted with 

 brown ; limbs cross-barred. 



Guanajuato and Tupataro, Mexico. 



