TURRIALBA AND PERALTA 257 



soft mud beneath the grass. However, I did obtain some 

 species of dragonflies that I had never, or but rarely, taken 

 myself in Costa Rica. Feeding on a patch of morning-glory 

 {Ip07ncBa), known in Costa Rica as "churristate" — the 

 same name is applied also to a mallow, Anoda hastata, — 

 near the laguna were some uniformly dark metallic violet- 

 blue Chrysomelid beetles {Haltica amethystina). Each one 

 was one-third of an inch long and had many fine punctures 

 over its dorsal surface but not arranged in lines. 



In the afternoon of August 10 I went again to the end of 

 the Y-track and into the woods beyond the laguna, where 

 I had taken the new species two days before. I did not see 

 them again but there were other interesting things. Both 

 here and along the Rio Chiriqui trail where I had been that 

 morning were a number of those transparent, pale-brown- 

 winged butterflies with an eye-spot and rose color on the 

 hind pair {Callitcsra menander), one of which I had taken in 

 the woods at Turrialba on July 26 (see page 252). I tried 

 to capture some of them but did not find it easy, for unlike 

 most butterflies, they did not rise when alarmed but fiew 

 horizontally close to the ground, through or beneath the 

 underbrush, and the dead or living stems and branches 

 prevented me from getting the net over the insects quickly 

 enough to catch them. I saw them only in dark shady places 

 with plenty of undergrowth. 



Lying on the glossy green leaf of an aroid about a foot 

 above the ground, in a fairly shady but hardly dark place, 

 were a dead leaf and apparently a twig three inches long 

 and one-fifth of an inch thick. Both looked as if they might 

 have fallen by chance upon the living leaf. But on second 

 glance I noticed that from the apparent twig there extended 

 two pairs of slender outgrowths, the members of each pair 

 placed so exactly opposite each other as to suggest at once 

 that they were insect's legs — and so they were. The appar- 



