2 University of Michigan 



our series have a length (head and body) of from 19,5 mm. 

 to 24 mm., whereas the length of the specimen measured by 

 Cope is giA'en as 43 mm. In this connection it may be noted 

 that the specimen figured by Cope* was but 23 mm. long, if, as 

 stated, the figures are natural size. In size, as well as in the 

 other characters, the Santa Marta specimens conform closely 

 to the description of P. variabilis. 



Apparently the only notes on the habits of the species are 

 those published by Werner', who states that the specimens 

 taken near Bogota which he examined were accompanied by the 

 following field note, "Frosch, Larven im Laich auf dem 

 Riicken tragend." 



In the Santa Marta Mountains the species was found be- 

 tween altitudes of 2,200 feet and 5,000 feet, on the slope near 

 the town of Santa Marta. It occurred in considerable numbers 

 at the bottom of ravines, in the litter along the banks of the 

 streams, where specimens could be studied and captured only 

 with considerable difficulty, owing to their small size, secret- 

 iveness and agility, and the many places of concealment af- 

 forded by the debris on the forest floor in such situations. For- 

 tunately the frogs may still exist in ravines which have been 

 cleared and subsequently permitted to become grass-covered, 

 and in such a ravine, at an altitude of 4,500 feet, the species 

 was found in some numbers and was studied by the senior 

 writer in as much detail as time and other work permitted, 

 from July 2 to July 26, 191 3. 



The frogs were in song throughout the time spent in the 

 region where they were found, and they were heard at all 

 times of the day, but in largest numbers during the rains. The 

 song consists of a piping note repeated rather regularly a vary- 

 ing number of times. No eggs could be discovered, but from 



* Loc. cit., PI. I, Fig. 2. 



■> I<oc. cit., p. 475. • , 



