FROGS OF COLOMBIA — COCHRAN AND GOIN 465 



chest; a heavy ventral disk; probably external vocal sacs in the 

 male. 



Dimensions. — Head and body, 46 mm.; head length, 16.5 mm.; 

 head width, 16 mm.; femur, 20.5 mm.; tibia, 24.5 mm.; foot, 23 mm.; 

 hand, 11.5 mm. 



Color in alcohol. — Dorsum Vandyke brown, with a wide clove 

 brown chevron between the eyes and with irregular marblings of 

 clove brown on back and sacrum; upper surface of limbs wood brown 

 with sepia crossbars, three of these on the upper tibia alternating 

 with much smaller bars and all ending in a clove brown spot on 

 concealed surface of tibia; posterior femur wood brown with a narrow 

 but sharply defined light stripe from near anus to under knee, bordered 

 above and below by clove brown; venter immaculate pinkish buff; 

 side of head wood brown with several squarish sepia spots nearly 

 reaching edge of lip, one or two of these touching lower eyelid; central 

 part of canthus rostralis with a wide clove brown stripe followed by 

 a light space, and then by two small clove brown spots just in front 

 of eye; a clove brown stripe covering the glandular ridge which 

 emanates from the posterior corner of eye and ends behind tympanum; 

 lower surfaces of hands and feet wood brown, the tubercles pale ecru 

 drab. 



Remarks. — The adpressed heel reaches the anterior corner of eye 

 or to a point between the eye and the nostril in about two-thirds 

 of the examples at hand; it reaches the center or posterior corner 

 of eye in the remainder. The tarsus is granular to warty in slightly 

 over half the examples, and smooth or nearly so in the others. As these 

 differences are not correlated with geographic distribution, they 

 must be regarded as random or individual variations. 



There are no distinctive stripes on any of the Colombian specimens 

 of L. poecilochilus diptychus at hand. According to Rivero (1961, 

 p. 43), the distinctive stripes are characteristic of Costa Bican frogs 

 of the nominate form. Cope's type of poecilochilus (USNM 4347a 

 from near Turbo, Antioquia, Colombia) is completely faded now; 

 otherwise, it is in fair condition. More fresh material of both forms 

 is needed in order to clarify their relationships. 



Specimens Examined 

 COLOMBIA 



Antioquia: Villa Arteaga, USNM 146437-8; Uraba, Rio Currulao, CNHM 



63846. 

 BoLfvAR: Isla Fuerte, CNHM 74937 (part). 

 Caqueta: Florencia, MLS 273. 



C6rdoba: Rfo Manso, tributary to upper Rfo Sinvi, USNM 150134-58. 

 Guajira: One-half mi. south of Pajaro, USNM 151306. 

 Magdalena: Fundaci6n, USNM 102408-10, BM 1916.4.4.16-7; Rfo Frio 



MCZ 16069; Santa Marta Mountains, BM 1929.11.12.5-8. 



