172 U. S. NATIONAL MUSEUM BULLETIN 2 06 



interorbital diameter lYi times the width of the upper eyelid, greater 

 than interval between the nostrils. Tympanum distinct, equal to 

 one-half the diameter of eye, separated from eye by a distance equal 

 to half its own diameter. Fingers quite long, webbed at the base, 

 fourth much longer than second and reaching nearly to disk of third 

 which covers one-half the tympanic area; a minute but sharp spine 

 at base of first finger; toes one-half webbed, fifth slightly longer than 

 third, disk of fourth covering about one-third the tympanum; a 

 small inner but no outer metatarsal tubercle; a definite inner tarsal 

 ridge; a similar ridge across heel but no true dermal appendage on 

 heel. Body elongate, in postaxillar}'^ region narrower than greatest 

 head width; when hind leg is adpressed, heel reaches to between eye 

 and nostril; when hind limbs are laid along the sides, knee and elbow 

 touch; when hind legs are bent at right angles to body, heels overlap. 

 Skin of upper parts smooth; a slight glandular ridge beginning on 

 canthus rostralis, continuing behind the eye over the tympanum and 

 down the sides nearly to the groin; a transverse glandular line in 

 front of anus; a very faint glandular line along outside of forearm and 

 tibia; skin of throat and chest very coarsely granular, that of belly 

 and lower femur heavily but more finely granular; no apparent skinfold 

 across the chest. A heavy external vocal sac across entire throat 

 appearing as )(-shaped skinfolds almost at the commissures of the 

 lower jaws. 



Dimensions. — Head and body 55 mm.; head length 17 mm., width 

 18 mm.; femur 27 mm.; tibia 28 mm.; hind limb 87 mm.; fore limb 

 35 mm. 



Color in life. — From notes by Dr. B. Lutz: On top, light saturated 

 enamel green, uniform except for a wavy interrupted line which shines 

 golden at night and is paler by day but always has a metallic sheen. 

 It does not quite reach the groin and continues from the fold over the 

 tympanum; lines similar to this found on forearm and on foreleg. 

 This line is the only break in the uniform green dorsal ground. Tym- 

 panum light brown. Iris golden, broad. Pupil horizontally elongate. 

 Edge of mouth with metallic sheen, not white, as described by Bur- 

 meister. Tln-oat citrine with darker network. Abdomen and lower 

 side of limbs adjacent to body white. Both abdomen and these parts 

 with a fine lavender network. Outside of thigh spotted in weak orange 

 and light brown spots. In captivity the frog became grayish tan 

 where it was green; the metallic wavy line persisted. The color 

 changes, is sometimes darker, sometimes lighter, sometimes mother- 

 of-pearl, but is never silver. Underside granular with yellow pigment 

 on the gula. Sometimes there is a little brown on the lower part of 

 the wavy line, but mixed with it and not straight. 



Color in alcohol. — Dorsum uniform olive-gray; an interrupted narrow 



