COLOMBIAN BATRACHIANS AND REPTILES. 1029 



specimens the upper parts, with the exception of fore limbs and 

 feet, are uniform greyish or yellowish white (yellow in life ?), the 

 rest of the animal deep black ; in others the black predominates, 

 the white being restricted to the upper surface of the head and to 



Text-fiff. 178. 



Dendrohates tinctorius (A) and D. paraensis (B). 

 Upper view of hand. 



more or less confluent blotches on the back ; further specimens 

 are intermediate between the two extremes. From snout to vent 

 38 mm. Eight specimens, from Para, are preserved in the 

 British Museum, three of which are mentioned in the Catalogue 

 of Batrachians, p, 143 (var. B, A, ^, Tc). 



19. Dendrobates aurot^nia, sp. n, (PI. CIY. fig. 1.) 



Snovit truncate, barely as long as the eye ; loreal region 

 vertical ; interorbital space as broad as the tipper eyelid ; 

 tympanum not very distinct, three-fifths the diameter of the eye. 

 Fingers slender, first extending beyond second, with rather small 

 disks ; toes slender, disks as large as those of the fingers ; sub- 

 articular tubercles very feeble ; two scarcely prominent meta- 

 tarsal tubercles and a very feeble fold on the inner side of the 

 tarsus terminating club-shaped half-way between the metatarsal 

 tubercles and the tibio-tarsal articulation. The tarso-metatarsal 

 articulation reaches far beyond the tip of the snout, the tibio- 

 tarsal falling between the eye and the end of the snout ; tibia 

 half as long as head and body. Skin smooth, of dorsal region 

 very porous. " Jet-black, with a metallic orange-yellow streak " 

 from the end of the snout along the canthus rostralis and the 

 upper eyelid to the loin ; " a few fine gold freckles on thighs and 

 arms." 



From snout to vent 30 mm. 



A single specimen from Peiia Lisa, Condoto, 300 feet. 



This frog approaches very closely D. trivittatus Spix, differing 

 only in the shorter snout and the absence of tubercles on the 

 back. 



