FROGS OF COLOMBIA — COCHRAN AND GOIN 477 



ending at arm insertion; a faint skinfold across chest; traces of a 

 ventral disk; no external vocal sac. 



Dimensions. — Head and body, 54 mm., head length, 16.5 mm.; 

 head width, 17.5 mm.; femur, 21.5 mm.; tibia, 25 mm.; foot, 21.5 

 mm.; hand, 12 mm. 



Color in alcohol. — Dorsum clove brown anteriorly to seal brown 

 posteriorly; a pair of wide clay-colored dorsolateral stripes beginning 

 on tip of snout and continuing along edge of upper eyelid, above 

 shoulder, and along sides nearly to groin; a large, irregular tawny 

 spot in groin, extending a little way on the front and top of femur; 

 limbs chocolate above, the forearm and upper leg surfaces with 

 several narrow clove brown crossbars; posterior femur clove brown, 

 with a large irregular cadmium orange spot running along its median 

 line; sides of head clove brown, immaculate except for paler tips on 

 the many pustules; sides of body lightening to burnt umber, with 

 a few round cream spots on the lower half; chin and chest dark drab 

 gray with many small buff spots; belly lightening to immaculate 

 dull ochraceous; anterior femur dark drab with large clove brown 

 spots above and small buff spots below; lower surfaces of femur 

 drab to dull ochraceous. Palms of hands and soles of feet slate gray; 

 tips of toes and fingers dull buff. 



Remarks. — While Lithodytes lineatus resembles some species of Lepto- 

 dactylus rather closely, it can be distinguished from them because its 

 terminal phalanges are T-shaped while those of Leptodactylus species 

 are claw-shaped or simple. It seems closest to Leptodactylus rhodomystax 

 in color and structure, but it can be distinguished from that species 

 on several characters. In Leptodactylus rhodomystax the tongue is 

 deeply notched, the tympanum is about two-thirds the diameter of 

 eye, and the inner metatarsal tubercle is small and oval; in Lithodytes 

 lineatus the tongue is scarcely indented, the tympanum is nearly equal 

 to the diameter of eye; and the inner metatarsal tubercle is very heavy. 



Throughout its range Lithodytes lineatus is very constant as to color 

 pattern, the wide light dorsolateral stripes covering the glandular lines 

 being present in all specimens examined. The tibia length seems to 

 have a low variation coefficient (3.4), but this is not unknown in some 

 other species of leptodactylids. The adpressed heel extends to the cen- 

 ter or posterior corner of eye in about 65 percent of the examples 

 measured; in the remaining ones it reaches between shoulder and eye. 



Specimens Examined 



COLOMBIA 



Amazonas: Rio Apaporis, USNM 144901-3. 



Meta: Forzosa, near Villavicencio, USNM 144904-5; Guaicaramo, USNM 



147095-100; Villavicencio, USNM 150520-1, CNHM 81792-4. 

 Norte de Santander: La Selva, USNM 147101-2. 



