30 U.S. NATIONAL MUSEUM BULLETIN 2 88 



spot on the tip of the chin and a median one on the posterior part of 

 the abdomen. The sides may be black or light and are sometimes 

 spotted, or they may have a branch of the light middorsal spot ex- 

 tending across the axilla. 



The lot of 40 examples (now USNM 147164-203) from Playa de 

 Oro, Rio San Juan, Choc6, were received freshly dead at the National 

 Museum on August 7, 1962, and their colors were noted before they 

 were preserved. Usually the back was ochraceous to ochre yellow, 

 with chestnut to chocolate-brown or seal-brown squarish spots and, 

 occasionally, longitudinal stripes. (In one example, the glands above 

 the groin were bright chrome yellow.) The belly was black except 

 for the maize-yellow to dull-cream edge of the lower jaw. 



In the most-spotted individual the back was gallstone yellow where 

 not black, the spots being brilliant cadmium yellow. The light area on 

 the legs was pinkish buff, while the centers of the ocelli on head and 

 sides were dull gallstone yellow. The few light areas on the belly were 

 raw sienna. 



In other examples the centers of the large ocelli on top of head and 

 on sides, shoulders, arms, and legs were chrome yellow to deep chrome. 

 The belly was solid black, but sometimes there was a pinkish vina- 

 ceous spot in the center of the throat. 



A year after preservation, some of the frogs were almost uniformly 

 black, the original yellow ocelli being a dull dark gray. Other frogs 

 were pale olive-buff or drab gray, the ocelli quite dark in contrast. 

 These differences may be due to the progressive state of decom- 

 position before preserving, as the frogs did not die simultaneously. 



There are no outstanding differences in critical measurements 

 to separate D. t. histrionicus from the other subspecies of D. tinctorius 

 found in Colombia, although it has a longer tibia on the average than 

 D. t. wittei or D. t. chocoensis and a somewhat shorter one than D. t. 

 conjluens. Fortunately, individuals of this group usually are abundant 

 wherever they occur, so we can hope for comparisons of still larger 

 series from future collections. 



Specimens from Playa de Oro, Rio San Juan, at 400 meters (CNHM 

 54229 and 54248-74), appear to be intermediate between D. t. his- 

 trionicus and D. t. chocoensis in color pattern. 



Specimens Examined 



COLOMBIA 



Antioquia: Andes, AMNH 14030. 



Caldas: Santa Cecilia, Pueblo Rico, CNHM 54184, 54186, 54188, 54190, 



54197, 54201-2, 54206, 54208-9, 54211, 54213-20, 54222, 54224-6, 54228, 



54231-2, 54234-47; La Selva, CNHM 54227. 

 Choc6: Andagoya, CNHM 81853 (juv.) ; 75 mi. south of Andagoya, USNM 



139778; Bahia Utria, MLS 188; Finca La Granja, 30 km. from Quibd6, 



