34 University of Michigan 



more rocks in the La Fria streams, especially in their upper 

 courses. Collected April 12-18, 1920. 



Hetaerina caja, not known on the swifter streams a few 

 miles above at Tachira, was present, but rare, at La Fria, 

 where it was taken on the sandy quebrada east of town and 

 on quebrada La Fria, a total of ten specimens altogether. 

 Macropiis was still rarer, with a total catch of three specimens 

 on quebradas La Fria and Santiaquita. Miniata was the abun- 

 dant Hetaerina at La Fria and was taken every day we col- 

 lected there, except one day when our entire party was in the 

 streamless forest north of town. The rarity of macropus was 

 a great surprise, as it was abundant at Tachira, and the swifter 

 streams at La Fria seemed well suited to it. Below La Fria, 

 at El Guayabo, macropus had entirely disappeared, but the 

 character of the streams there was such that this is what one 

 would expect. 



25. Los Amates, Guatemala. A station on the railroad 

 59.3 miles above Puerto Barrios. Elevation, 160 feet. Rio 

 San Francisco, below town, is fifteen to twenty feet wide, 

 sluggish, with generally overhanging banks and few beaches. 

 Easily waded in low water stage on June 19, but wading dif- 

 ficult or impossible following heavy rains that night. After 

 these rains a small wet weather stream with abundant odonate 

 life made its appearance in the forest on the east of the rail- 

 road below the Rio San Francisco. Collected June 18-22, 1909. 



On June 19, collecting from the railroad bridge over the 

 San Francisco up-stream a mile or more, I took three Hetae- 

 rina macropus, two miniata, and forty-six titia. Macropus 



was also collected along the wet weather stream east of the 

 railroad. 



26. Moicuto, Venezuela. About a mile and a half east of 

 La Guiara. The Rio Macuto at Macuto is a clear, swift, 



