102 U.S. NATIONAL MUSEUM BULLETIN 2 88 



1933. Bufo typhonius typhonius. — Leavitt, 1933, p. 8. — Rivero, 1961, p. 29 

 1953. Bufo (Otilophus) typhonius. — Cei, 1953, p. 511. 



Description — An adult male, USNM 146824, from Puerto Narifio, 

 Amazonas, Colombia. Bony ridges on top of head greatly enlarged 

 beginning with supraorbital crest and extending continuously as 

 postorbital crests behind the eye and above the ear, reaching their 

 greatest height just before merging with the large parotoid, and 

 ending above and behind the axilla; posterior part of parotoid not 

 involved in the enlarged crest; but merging with a longitudinal line 

 of conical glands which are continued along the side to the groin, 

 becoming much larger posteriorly; a weak parietal ridge bifurcating 

 from the posterior part of the supraorbital crest. Tongue nearly 

 one-half as wide as mouth opening, elongate oval, its posterior border 

 free and unnotched; snout pointed when viewed from above, truncate 

 in profile, the upper jaw extending well beyond the lower; a knob- 

 like protuberance on angle of jaw. Nostrils opening upwards, slightly 

 projecting, their distance from end of snout one-half their distance 

 from eye. Can thus rostralis sharply ridged; loreal region flat, de- 

 scending nearly vertically to the upper lip. Eye large, prominent, its 

 diameter nearly as great as its distance from tip of snout; inter- 

 orbital diameter more than twice that of upper eyelid, much greater 

 than interval between nostrils. Tympanum distinct, its greatest 

 diameter three-fifths that of eye, separated from eye by an interval 

 equal to one-half its own diameter, its upper rim involved in the 

 greatly enlarged crest. Fingers long and slender, with lateral ridges 

 and weak basal webs, first finger a little longer than second, fourth 

 longer than either, reaching nearly to base of penultimate phalanx 

 of third; all the digits with bulbous, swollen tips; a distinct oval 

 thumb pad present; a larger oval palmar callus; metacarpal tubercles 

 well developed. Toes moderate, nearly one-half webbed and with 

 lateral ridges, third and fifth subequal, both reaching nearly to base of 

 antepenultimate phalanx of fourth toe; a flattened oval inner meta- 

 tarsal tubercle and a smaller roimded outer one; no inner tarsal 

 ridge, but a weak outer one to heel; a slight skinfold on heel and knee; 

 soles spinose. Body stout, in postaxillary region equal to width of 

 head without the knob-like protuberances on jaw. When hind leg is 

 adpressed, heel reaches center of tympanum; when limbs are laid 

 along the sides, knee and elbow are slightly separated; when hind 

 legs are bent at right angles to body, heels are widely separated. 

 Skin of upper parts covered with fine and coarse granules; a mid- 

 dorsal series of seven large button-like prolongations of the lumbar 

 vertebrae (in old males only); venter finely granular on chin, more 

 coarsely granular on chest, belly, and lower limb surfaces; no skinfold 

 across the chest; no ventral disk; an internal vocal sac in the male. 



