8 U. S. NATIONAL MUSEUM BULLETIN 206 



Genus Dendrobates Wagler 



1830. Dendrobates Waglek, p. 202. (Genotype, Dendrobates tinctoriua Wagler.) 



Generic diagnosis. — Pupil horizontal. Tongue elongate, entire, 

 free behind. Tympanum more or less distinct. Fingers and toes 

 free, the tips dilated into regular disks. Outer metatarsals united. 

 Omosternum with a weak, semiossified style; sternum cartilaginous. 

 Terminal phalanges T-shaped. 



Dendrobates Jlavopictusi^A.. Lutz) 



Plate 1, Figures g, h 



1925. Hylaplesia flavopicta A. Lutz, 1925a, p. 139 (type locality, mountains 

 near Bello Horizonte, Minas Gerais) ; 1926a, pp. 8, 15. 



Description. — Redescription of adult female, IOC (cotype), Bello 

 Horizonte, Minas Gerais. Tongue apparently a little less than one- 

 half the width of mouth opening, oval, not incised on its very free 

 posterior border; snout moderate in length, shaped like the half of a 

 hexagon but with the anterior part slightly rounded when seen from 

 above, bluntly rounded in profile, the upper jaw extending considerably 

 beyond the lower; nostrils lateral and below the bulge of the snout, so 

 that they are not visible from above, not projecting, separated from 

 each other by an interval greater than their distance from eye. 

 Canthus rostraUs very prominent, although rounded; loreal region 

 flat and vertical, nearly continuous with the line to the upper lip 

 border. Eye large, deep-set, and not projecting greatly beyond the 

 head, its diameter equal to its distance from end of snout; interorbital 

 diameter equal to the rather wide upper eyehd, a little less than interval 

 between nostrils. Tympanum distinct, about one-half the diameter 

 of eye and lying very near posterior border of eye. Fingers not 

 webbed, first and second subequal, much shorter than fourth and 

 reaching to base of antepenultimate phalanx of thu-d; finger disks only 

 shghtly enlarged, with truncate tips; no pronounced rudiment of a 

 poUex, but palmar and metacarpal tubercles well developed; appar- 

 ently no glandular ridge on forearm ; toes free, third much longer than 

 fifth and reaching halfway on the antepenultimate phalanx of fourth, 

 disks slightly enlarged and covering less than one-fomth the tympanic 

 area; an oval inner and a smaller round outer metatarsal tubercle; 

 apparently no tarsal ridges; a distinct narrow fold of skin across heel 

 and knee. Body rather elongate, in postaxillary region apparently 

 a httle less than greatest width of head; when hind leg is adpressed, 

 heel reaches to posterior corner of eye; when limbs are laid along the 

 sides, knee ahd elbow overlap ; when hind legs are bent at right angles 

 to body, heels touch. Skin of upper part of head and hmbs smooth, 

 skin of back set with many coarse, oval glands; a very shght supra- 



