112 U.S. NATIONAL MUSEUM BULLETIN 288 



parietal ridge; a distinct skinfold across the chest; a weak ventral 

 disk; an external median vocal sac in the male. 



Dimensions. — Head and body, 40 mm.; head length, 14 mm.; 

 head width, 14.5 mm.; femur, 15 mm.; tibia, 16.5 mm.; foot 13.5 

 mm.; hand, 11 mm. 



Color in alcohol. — Dorsum raw sienna; a pale middorsal line from 

 snout to anus; a dark chevron-shaped mark on upper eyelids and 

 interocular region, and other indistinct dark diagonal markings on 

 the back; upper limb surfaces ochraceous with a few wide sepia 

 crossbars, venter buff, with small sepia spots on throat and anterior 

 half of abdomen and a larger triangular sepia mark on center of chest ; 

 side of head ochraceous-buff, with three or four sepia spots on upper 

 lip, the largest one below anterior corner of eye; a large sepia patch 

 from corner of mouth to postocular ridge, covering tympanum, and 

 extending backwards below the line of pointed tubercles on parotoid 

 and along the side through groin and along anterior femur; inner 

 half of sole of foot buff, the outer half pale sepia; palms of hands buff. 



Remarks. — This species resembles Bufo coniferus and B. typhonius 

 in having a short vertical ridge along the tip of the snout; in fact, 

 Shreve (1947a, p. 535) assigned sternosignatus a subspecific rank under 

 typhonius. All three likewise have a raised postorbital crest, which, 

 in coniferus at least, apparently does not increase in older and larger 

 animals to the fantastic proportions found in typhonius of similar size. 

 But in coniferus the parietal crest reaches a much greater development 

 than it does in the other two, making nearly a right angle with the 

 subocular crests while the tubercles on the back, and especially those 

 behind the ear and along the side, are much higher and more "spiky." 



Both typhonius and sternosignatus have a curving crest around the 

 eye merging gradually with the parietal crest, without forming a right 

 angle. In typhonius, the angle of the jaws is produced beyond the 

 usual head outline, while in sternosignatus the jaws are normal. 



Rivero (1961, p. 39) discredits the presence of B. sternosignatus in 

 Colombia as follows : 



Reported from Colombia by Peracca, 1914 (Cafetal Camelia, nr. Angelopolis, 

 1820 M.), Werner, 1916 (Canon de Tolima), and Boulenger, 1882 (Bogota). 

 These records probably refer to B. typhonius alatus. Dunn (1944) does not mention 

 this species in his "Herpetology of the Bogota area," but he includes Bufo typhonius 

 in the actual fauna of Bogota .... 



On the strength of Boulenger's identification of the Bogota frog, 

 this spciees is retained in the Colombian fauna. 



Specimens Examined 

 COLOMBIA 



Cundinamarca: Bogota, BM 68.9.15.1-2 

 VENEZUELA: Andes of Venezuela, BM 94.8.31.12. 



