192 BULLETIN 160, UNITED STATES NATIONAL MUSEUM 



white dots and blotches; skin of back between dorso-lateral 

 glandular dermal folds smooth or granular, and with small 

 warts; a narrow or moderately broad, feebly prominent, dorso- 

 lateral glandular dermal fold from above tympanum to sacral 

 region or a little beyond, sometimes interrupted, and occasion- 

 ally absent; sides with flattened warts; underparts generally 

 smooth; abdomen and thighs sometimes granular; a broad 

 glandular fold from below tympanum to above arm; upper 

 surface of tibia with or without longitudinal glandular ridges; 

 fingers long and slender, pointed, and sometimes bordered by 

 narrow dermal fold; first finger usually as long as second, occa- 

 sionally slightly longer or slightly shorter; the hind limb being 

 carried forward along the body, the tibio-tarsal joint reaches 

 to tympanum or eye or bej^ond; distance from snout to vent 

 2 to 2% times length of tibia; toes rather long, pointed, webbed 

 to tips or with last joint of fourth free; outer metatarsals sep- 

 arated nearly to base; subarticular tubercles small, feebly 

 prominent; tarsal fold feeble, but often a distinct ridge; inner 

 metatarsal tubercle elliptic or subtriangular and prominent, 

 one-fourth to one-third the length of inner toe; no outer 

 metatarsal tubercle; width of head at level of posterior angles 

 of jaws greater than distance between end of snout and poste- 

 rior margin of tympanum; snout rounded, scarcely projecting 

 beyond mouth, as long as or a little longer than transverse 

 diameter of eye; canthus rostralis indistinct; loreal region very 

 oblique, scarcely concave; nostril equidistant from eye and 

 from end of snout or a little nearer the former; interorbital 

 width less than that of upper eyelid; tympanum moderately or 

 very distinct, two-thirds to once the diameter of the eye; vomer- 

 ine teeth in small transverse or oblique groups between or barely 

 behind posterior borders of choanae; male with a large blackish 

 external vocal vesicle on each side, forming loose folds from 

 behind angle of mouth to shoulder; head-and-body length of 



adults, 100 to 145 mm montezumae (p. 197) 



Ground color of upperparts and underparts never stippled or 



spotted with white dots 4 



4. Skin of back between dorso-lateral glandular dermal folds smooth 

 or granular, with more or less conspicuous elongated warts 

 or interrupted glandular ridges; a prominent, narrow or 

 moderately broad glandular dorso-lateral dermal fold, extend- 

 ing backward from upper eyelid at most to level of acetabulum, 

 but generally interrupted or else ending at about level of 

 middle of sacrum; a glandular fold from below eye to vocal 

 vesicle or to above arm; longitudinal glandular ridges bearing 

 small conical tubercles sometimes present on upper surface of 

 tibia; hinder surface of thigh rugose or granular; sides of 

 body with low papillae; lower parts smooth, abdomen excep- 

 tionally feebly granular; upperparts brown, gray, olive, or 

 bright green, with numerous rounded or elongated dark brown 

 or black spots strongly contrasted with lighter ground color 

 and with or without light margins; upperparts rarely without 

 dark spots; a dark central streak, a dark blotch on upper eye- 

 lid, and a rounded dark spot on top of snout sometimes pres- 

 ent; tympanum often reddish or bronzed, occasionally with 

 light spot in center; dorso-lateral glandular dermal folds 



