TURRIALBA AND PERALTA 265 



little was known, he said; one, much the larger, was eighty 

 manzanas in area, the other about thirteen manzanas. (A 

 manzana is a Spanish square measure equalling 10,000 square 

 yards.) The crater lakes were too far away, by his account, 

 to be reached on the cloudy morning of August 10, but other- 

 wise I adopted his suggestion. 



The Chiriqui(.^) River was crossed by the railroad at 

 about milepost 53^, if there were one present but I failed 

 to find it. The long-tailed, black and green, day-flying 

 moth Uranidia fulgens, mentioned on page 110 as so much 

 resembling a Papilio butterfly, was very abundant this 

 morning and a little north of post 533^, I stopped, at 7.50 

 A. M., to make a definite count. There was evidently a 

 migration in progress, for the moths were flying northwest 

 to southeast steadily without returning or diverging. Most 

 of them were high in the air above the tops of the forest 

 trees remaining near the tracks, but enough were flying 

 lower to be plainly identified. I counted 176 passing just 

 above me in two minutes and then stopped because the 

 glare from the sky was too hard on the eyes. There was no 

 wind; the sky was mostly clouded over, the sunshine feeble. 

 The migrating column was of no great width. 



The banks of the Rio Chiriqui were heaped with rounded 

 boulders. A negro who was gathering old ties and logs 

 told me that the trail I was seeking was on the north side 

 of the river, and crossing the railroad bridge I found its 

 starting point at the very abutment. But before turning 

 into it I walked along the tracks a little farther to look at 

 the Reventazon, which was filled with great rocks that made 

 it a boiling rapids opposite the mouth of the Chiriqui. The 

 trail entered the woods a short distance from the railroad. 

 The principal characteristic of this piece of forest was the 

 great number of lianas which hung from the trees. They 

 were of all sizes from those little thicker than light twine to 



