144 DENDROBATIDE. . 
inate, : 
Disks of fingers much darger than the tympanum. Skin quite 
smooth. Greyish or vermilion-red, with or without small dark 
markings on the back; all four limbs black. 
Central America. 
3. Dendrobates trivittatus. 
Hylaplesia picta, Giinth. Cat. p. 125. 
Hyla trivittata, Spiv, Spec. Nov. Test. Ran. p. 35, pl. 9. f. 1. 
nigerrima, Sper, 1. c. p. 36, pl. 9. f. 2. 
Dendrobates nigerrimus, Wagl. Syst. Amph. p. 202; Stetndachn. 
Verh. zool.-bot, Ges. Wien, 1864, p. 257, pl. 13. f. 2. 
trivittatus, Wagl. 1. c.; Peters, Mon. Berl. Ac. 1872, p. 213; 
Cope, Proc. Ac. Philad. 1874, p. 129. 
Hylaplesia picta, Tschudi, Batr. p. 71. 
Dendrobates obscurus, Dum. § Bibr. p. 655; Guichen. An. Nouv. 
Amér. mérid. p. 87, pl. 18. f. 2. 
pictus, Dum. & Libr. p. 656; Guichen. in Gay, Hist. Chile, 
Zool. ii. p. 119. 
Snout truncate, a little longer than the diameter of the eye; 
loreal region vertical; interorbital space broader than the upper 
eyelid; tympanum more or less distinct, about half the diameter of 
the eye. Fingers slender, first extending slightly beyond second ; 
toes slender ; tips of fingers and toes dilated into small disks ; sub- 
articular tubercles distinct; two scarcely prominent metatarsal 
tubercles. The hind limb being carried forwards along the body, 
the tarso-metatarsal articulation reaches far beyond the tip of the 
snout. Back tubercular; a scarcely prominent glandular lateral 
fold. Black above and below. Male with a subgular vocal sac. 
Tropical America. 
The following specimens belong to three varieties of coloration :— 
A. Uniform black. 
Gee Brazil. 
B. A whitish line along the side of the back, the outer edge of 
the upper eyelid, and the canthus rostralis, confluent with its 
fellow on the end of the snout; another whitish line on the 
upper lip, commencing from the vertical of the front edge of the 
eye, extending to the arm; sides, belly, and lower surface of 
limbs with whitish spots. 5; 
OOK Demerara. 
G2. Vryheids Lust, Demerara.» W. 'T. Turner. 
d. 9. Surinam. Mr. Bartlett [C.]. 
Bont: Surinam. Hr. Kappler [C.}. 
t-g. 3. Para. 
h. 9. Cayaria. W. Davis, Esq. [C.]. Messrs. 
Veiteh (Pa. 
C. Forehead whitish ; three whitish streaks along the back, the 
two outer continued on the upper surface of the hind limbs; a 
whitish line on the upper lip, as in var. B; loins and axilla 
