100 U.S. NATIONAL MUSEUM BULLETIN 288 



form three irregular crossbars on tibia, foot, and forearm; posterior 

 femur wood brown with dark spots which fade out below; soles of 

 feet and palms of hands ecru drab, the toe tips and tubercles sepia. 



Remarks. — The males can be distinguished by the brown patches of 

 rough scales on the inner surface of the first finger in breeding season. 

 In the present series, the smallest specimen to display the brown 

 patches is USNM 146636, measuring 38.5 millimeters in total length. 

 The larger and more circular tympanum also is a prevalent charac- 

 teristic of the male of this subspecies. In some males the vocal sac 

 extends as far back as the armpits. 



The dark spotting of the belly apparently has no regional signifi- 

 cance, as both spotted and unspotted bellies occur in toads from the 

 northern, central, and southern states of Colombia. 



The very short femur, tibia, and hand distinguish members of the 

 granulosus group from other Colombian toads. The peculiar shape 

 of the snout in granulosus is likewise an identifying character. The 

 species has several distinct forms in different regions of South America. 

 These forms have been studied most recently by Gallardo, who has 

 called most of the Colombian toads humboldti, with the single excep- 

 tion of one from Guaira, Magdalena, which he records as beebei. 

 Differences are very slight between these two forms, but the former 

 subspecies has a slightly greater head width and head height. Only 

 the comparison of large series of beebei with humboldti can confirm 

 or repudiate their validity. 



Specimens Examined 

 COLOMBIA 



Antioquia: Casabe, USNM 146814. 



Atlantico: Rio C&ar, USNM 117515. 



BoLfvAR: Sincelejo to Tolu, USNM 150733-41. 



C6rdoba: Cano Betancf, Junquilla, USNM 144571. 



Cundinamarca: Melgar, USNM 146635-6; Tocaima, El Cucharo, 380 m., 



USNM 146201. 

 Guajira: One-half mile south of Pajaro, USNM 151292-302; Sierra Macuira, 



USNM 115380; Piojo, 100 m. f USNM 152688-93. 

 Magdalena: Cienaga, USNM 144153; lower Rio Manzanares, between Santa 



Marta and Mamatoca, 30-60 m., USNM 150892; Finca El Aranar, Bonda, 



USNM 152735-49. 

 Meta: "La Cristalina," edge of Cano Losada, Sabana, USNM 144572; 



Villavicencio, USNM 144573, 146815; 7 km. northeast of Villavicencio, 



USNM 146385-9; Sierra de La Macarena, Cailo Guapaya, USNM 147266-7. 

 Norte de Santander: Astillero, USNM 146816-7. 



Tolima: Mariquita, USNM 144574-83, 150151-3; Melgar, USNM 148135. 

 Valle: Rio Calima near C6rdoba, USNM 145773. 

 Vaupes: Arnanaven, Boca del Rio Guaviare, USNM 144584. 

 PANAMA: Rio Calobre, USNM 53739; Fort Kobbe, Canal Zone, USNM 



140493. 



