360 U- S. NATIONAL MUSEUM BULLETIN 2 06 



mm., width 9.5 mm.; femur 9 mm.; tibia 9 mm.; foot 9 mm.; hand 

 4.5 mm. 



Mathematical analysis (in percentage of the total length) : 



Color in alcohol. — This specimen is now bleached to cream buff 

 dorsally, with traces of dark sepia below the converging parts of the 

 glandular dorsal lines; forearm and tibia with large sepia spots; poste- 

 rior femur and postanal region immaculate sepia; heel and tarsus 

 sepia; ventral surface wood brown turning to cinnamon on throat. 



Color in life. — One specimen, USNM 97427, collected on Tijuca, 

 near Cascatinha, was a dark slate gray when first found. By the 

 next morning it had turned much paler, and the follov/ing color notes 

 were then made: Dorsum ochraceous-bufF with patches of pale clay 

 color edged with clove brown. Snout on top from eye forward pale 

 greenish chrome yellow. Ventral surface clove brown with reticula- 

 tions of opaque white, a vinaceous tinge between the arms on chest. 

 Feet and hands pale greenish chrome yellow. Upper part of iris pale 

 brassy gold, then a black hourglass-shaped horizontal mark, and a 

 smaller area of gold below it. 



yarmiions.— Additional examples agree well with the described 

 specimen in proportions. The largest, USNM 96314, has the canthus 

 even a little more rounded than in the described specimen and shows 

 very distinctly the large meniscus over the upper part of the pupil 

 of the eye, a structure found also in Cycloramphus. The heel does not 

 reach beyond the corner of the mouth even in the immature frog. 

 Some fine pustules on the sides are occasionally present. The color 

 pattern seems to be fugitive on specimens preserved for some time, 

 but the remnajit that still persists compares well with that of freshly 

 collected examples. Some narrow diagonal mottled stripes appear 

 across the upper surface of femur and foot as well as on the tibia in 

 fresher specimens, while a single slanting dusky spot begins above 

 the arm, slopes rapidly down on the sides where it widens and finally 

 loses itself in the dark ventral coloration. A Y- or M -shaped dusky 

 marking also appears across the sacral region. The sides of the head 

 have three slanting dark lines setting off two pale triangles below the 



