28 U. S. NATIONAL MUSEUM BULLETIN 206 



rounded parotoids, which are twice as long as broad and extend back 

 to the level of the axilla; parietal crests short, poorly developed; a 

 heavy ridge along upper lip ; interorbital space concave below level of 

 ridges. Eye moderate, projecting slightly beyond the plane of the 

 surrounding ridges, its diameter slightly more than its distance from 

 end of snout ; interorbital diameter nearly twice the width of upper eye- 

 lid and twice the interval between nostrils. Tympanum small, one- 

 half the eye diameter, distinct, higher than wide, separated from eye 

 by a space equalling half its greatest diameter. Fingers free, with 

 traces of lateral ridges distally, first finger slightly longer than second 

 and equal to fourth; a round tubercle at base of first finger, and a less 

 distinct but larger one on palm; subarticular tubercles moderate, the 

 basal as well as distal ones double or semidivided; toes one-third 

 webbed, heavily fringed, third longer than fifth, reaching halfway to 

 penultimate phalanx of fourth; a conical projecting inner and a small 

 weak outer metatarsal tubercle; a faint short tarsal ridge fading out 

 midway to heel, subarticular tubercles small, double. Body stout, in 

 postaxillary region 1 Yz times the greatest width of head ; when hind leg 

 is adpressed, heel reaches to shoulder; when limbs are laid along the 

 sides, knee and elbow fail to meet; when hind legs are bent at right 

 angles to body, heels touch. Skin of dorsum with scattered low warts 

 covered with groups of small spines, the intervening skin smooth, 

 these warts forming an irregular row on each side of the indented 

 midline anteriorly, and (in this specimen) a more distinct lateral row 

 behind each parotoid; upper eyelid coarsely granular but not spiny; 

 scapular ridges very indistinct; no tibial gland; throat and chin finely 

 granular, belly coarsely gi'anular, lower part of legs nearly smooth, 

 A slight skinfold across the chest indicating the presence of an external 

 vocal sac. 



Dimensions. — Head and body 121 mm.; head length 33 mm., width 

 47 mm.; femur 49 mm.; tibia 47 mm.; foot 50 mm.; hand 31 mm. 



Color in alcohol. — Dorsum raw umber, the head crests and aggrega- 

 tions of spines on back and limbs clove brown; venter raw umber, 

 throat immaculate; very coarse dark brown reticulations over chest, 

 belly, and lower surface of femur; lower parts of hands and feet seal 

 brown, the tips of toes and fingers black; ridge of upper lip clove brown. 



Variations. — The female has a dorsal raw-umber ground color like 

 the male, but this appears only in the midline and on the head and 

 parotoids and in a wide lateral stripe, the intervening space on the 

 back being deep clove brown with a few scattered light spots, while a 

 broad bro^\'^l band below the wide lateral light stripe merges gradually 

 with the heavy reticulate ventral pattern that sometimes extends on 

 to the throat and along the entke lower parts of the limbs. A female 

 evidently formed the basis for the Spix figure of Bufo ictericus. 



