1028 MR. G. A. BOULENGER ON 



side of the snout and on the left foot ; the forearm is completely 

 encircled by the yellow spot. 



d. Same locality as c. Differs from c in the lateral spot being 

 produced as far as the eye on the left side, where it is confluent 

 with the oval spot situated on the upper surface of the head as 

 in a ; the spot on the tibia surrounds the limb ; a yellow spot on 

 the right foot instead of the left. 



e,f. Same locality as c and d, and very similar in the markings, 

 which, however, were noted by Dr. Spurrell as of a vivid 

 yellow instead of red. e has the lateral spots very large and 

 narrowly separated from each other on the belly, that on the 

 left side extending to the temple ; a spot on the right foot ; fore- 

 arm encircled by the red spot, /"has the spot on the right foot 

 instead of the left. 



A further Colombian specimen, from IS^oanama, S. Juan 

 (M. G. Palmer), is not unlike the preceding, but the spots are 

 smaller and less regular and of a vivid magenta-red. A figure is 

 given to show the disposition of the markings on the black body. 



Var. chocoensis. — Phyllohates chocoensis Posada Arango, 

 Memoire sur le poison de Rainette des sauvages du Choco (Paris, 

 1869) ; Deyrolle, Rev. et Mag. de Zool. 1872, p. 465, pi. xxvii. 



The frog noticed by Posada Arango as furnishing the Choco 

 Indians with a deadly poison for their arrows is described as 

 bright yellow on the head and back and bluish black on the limbs 

 and lower pai'ts. A specimen answering to this description is 

 preserved in the British Museum, from Jvmtas, Rio San Juan, 

 Choco, 320 ft. (M. G. Palmer). 



Nine specimens, obtained by Dr. Spurrell at Peiia Lisa, 

 Condoto, 300 feet, may be referred to this form, and show 

 considerable variation in coloration. A snake which started 

 eating one of these frogs was observed to drop it hurriedly. 

 " Ground colour of upper parts a rich orange-yellow, belly dark 

 brown ; markings on back and limbs varying from dark reddish 

 orange to chocolate- brown, not sharply defined nor regularly 

 symmetrical ; much variation in colour and arrangement of 

 markings ; ground colour of upper parts sometimes lemon-yellow 

 or brownish yellow." The specimens which most nearly approach 

 Posada Arango's description have the head and back uniform 

 yellow or with only one dark spot, on the middle of the back, 

 just behind the head ; the sides are blackish brown, and the upper 

 surface of the limbs yellow. 



The numerous varieties of Dendrohates tinctorius are much in 

 want of revision. Among those already described there is one 

 which is unquestionably entitled to specific rank and for which I 

 wish to propose the name Dendrohates paraensis. Disks of fingers 

 and toes much larger than in D. tinctorius ; a small but very 

 distinct tubercle on the inner side of the tarsus, nearer the meta- 

 tarsal tubercles than the tibio-tarsal articulation. In some 



