NATURAL SCIENCES OF PHILADELPHIA. 



129 



Color, above reddish to brown, in one specimen bright-red; 

 femora black behind, faintly pale-marbled ; front of femur black, 

 a few black spots in the groin. Entire hind limb black, cross- 

 barred. A narrow black bar from nostril to tympanum ; upper 

 lip broadl}' black-bordered. Inferior surfaces dark-brown, with 

 numerous pale dots, which may be wanting on the gular region, 

 and inosculate on the femur. 



Length of head and body 



" of head to angle of jaws 



Width of head at angle of jaws 

 " of head between orbits . 



Length of fore limb . 



of hind limb 

 of hind foot . 

 of tarsus 



M. 



.066 

 .019 

 .026 

 .006 

 .035 

 .081 

 .040 

 .016 



From Moyabamba, Peru. 

 Dendrobates trivittatus, Spix (?). 



This species agrees with the figure given bj^ Spix, and differs 

 from the description by Giinther, of the D. tincforiiis, to which 

 the latter author refers it as a synonym. Thus the dorsal derm 

 is closel}' areolate, and the ventral smooth, and the first finger is 

 longer than the second. There are three longitudinal yellow 

 bands, the outer springing from the orbits, the median from 

 betw^een them. The lateral extend to the knee, while another 

 band extends from the lips below the orbit to the middle of the 

 humerus. A yellow horse-shoe on the end of the muzzle; below 

 black, with yellow spots on the limbs only. Femur with few spots 

 behind. 



From between Balso Puerto and Mo^'abamba, Peru. 



Dendrobates labialis, sp. nov. 



Skin minutely areolate on the upper surfaces, smooth below. 

 Muzzle flat, moderately elongate, and broadly truncate. Tympa- 

 num one-fifth size of eye, which equals length of muzzle and 

 interorbital width. The muzzle marks the end of the forearm, 

 and the posterior edge of the orbit the heel. First finger longer 

 than the second. The upper surfaces are colored by some pig- 

 ment, whose distinctive character has been lost in the alcohol. 

 Upper lip pale banded, the band extending through the axilla, 



