Occasional Papers of the Museum of Zoology 27 



talis was probably due to the fact that no rocky quebrada 

 was followed back to near its source. 



10. CJiagtmnas, Trinidad. A station on the Port-of-Spain- 

 San Fernando railroad, twenty to twenty-five miles from 

 Port-of-Spain, lying not far from the coast in a flat country. 

 The single small stream we found was dry in most of its 

 course, with no flowang water. Collected March 7, 1912, and 

 only a single female of Hetaerina caja was taken. 



11. Cincinnati. Coffee estate, twenty miles from Santa 

 Marta on Mt. San Lorenzo, Colombia. Elevation about 4,500 

 feet. A heavily forested region. With Cincinnati as head- 

 quarters, we collected down to 2,500 feet. Streams very 

 numerous, about Cincinnati very rough and rocky, with some 

 fine waterfalls. Smaller streams offered better collecting than 

 the larger streams, and as we descended to lower levels and 

 to the quieter streams at about 2,500 feet elevation we fotmd 

 odonate life still more abundant. Collected here December 

 28-31, 1916, and January i, 1917. 



At Rauca Pluma Creek, just below the house at Cincin- 

 nati, we found Hetaerina capitalis and crueniata common and 

 in about equal numbers. This is at an elevation of about 

 4,500 feet. The stream is in forest. It has high banks, is 

 very rocky and rapid, with an average width of four feet and 

 a heavy flow of water. Cruentata also occurred in still larger 

 numbers on two small streams, fully exposed to the sun. as a 

 result of clearing of the forest, on the so-called upper road 

 not far from Cincinnati and at the same elevation. At Danta 

 Creek, also near Cincinnati, it was rare. Equally rare on the 

 same creek were capitalis and macro pus. But on the Agua 

 Dulce, about four miles distant, and at an elevation of about 

 2,500 feet, macropus was abundant, capitalis was xtvy rare, 

 and cruentata was absent. 



