16 U.S. NATIONAL MUSEUM BULLETIN 2 88 



pronounced patterns of the tinctorius group of Dendrobates. Sometimes, 

 however, the wide dorsolateral stripe appears as a lighter gray. 



Specimens Examined 



COLOMBIA 

 Amazonas: Leticia, UF 8535; Puerto Narino, USNM 146832. 

 Putumato: Rio Aquiles on the Rio Mecaya, a tributary of the upper Rio 

 Caqueta, USNM 144992-3. 

 BRAZIL: "Lower Amazonia," USNM 28931; Marajo Island, Para, MCZ 15663. 

 BRITISH GUIANA: Paruima Mission, Kamarang River, USNM 118681-2. 

 ECUADOR: Junction of the Chiguancay and Chanchan Rivers, ANSP 18188. 

 PERU: Between Pucallpa and Rio Aquaytra, MCZ 24443; Tingo Maria, CAS 

 85152; vicinity of Puerto Santa Clara, Orellana, USNM 127214-8. 



Dendrobates ingeri, new species 



Plate 2d-f 



Holotype. — USNM 146846, an adult from Aserrio, near Rio Pescado, 

 Caqueta, Colombia, collected by Hno. Niceforo Maria. 



Paratypes. — USNM 146847-9, same data as holotype. 



Diagnosis. — First finger longer than second ; adpressed heel reaching 

 to posterior corner of eye; no dorsolateral light lines; venter anteriorly 

 slate-black, posteriorly with faint light reticulations; size to 27.5 mm. 



Description of holotype. — Tongue relatively large, half as wide as 

 mouth opening, pyriform, its posterior border free and unnotched; 

 snout bluntly rounded when viewed from above, truncate and sloping 

 backwards in profile, the upper jaw extending well beyond the lower. 

 Nostrils lateral, projecting, their distance from end of snout one-third 

 their distance from eye. Can thus rostralis distinct, rounded; loreal 

 region slightly concave, vertical, continuous with the upper lip. Eye 

 large, prominent, its diameter \){ times its distance from tip of snout; 

 interorbital diameter equal to that of upper eyelid, considerably 

 narrower than interval between nostrils, Tympanum distinct but 

 rather small, its greatest diameter one-third that of eye, separated 

 from eye by an interval equal to one-third its own diameter. Fingers 

 long, with rather small disks and slight lateral ridges, free, first finger 

 longer than second or fourth, its tip reaching to base of penultimate 

 phalanx of third, the disk of which covers about one-eight the tym- 

 panum; a small oval thumb pad present; a larger round palmar callus; 

 metacarpal tubercles well developed. Toes long, very slightly webbed 

 at the base, third toe much longer than fifth, its disk reaching to base 

 of antepenultimate phalanx of fourth; disk of fourth toe covering 

 one-fourth the tympanum and appreciably larger than that of third 

 finger; a small oval inner metatarsal tubercle, and a round outer one 

 of about the same size; a weak tarsal ridge, with a small round tubercle 

 midway to heel; a distinct skinfold on heel and knee. Body elongate, 



