Occasional Papers of the Museum of Zoology 25 



Along the Tamacal above Bolivar Hctaerina caja and 

 macropus were flying together, but neither species was abun- 

 dant. Caja was not found elsewhere, excepting three males 

 which were taken at a small pond not far from the Tamacal. 

 Macropus, on the other hand, was numerous on some of the 

 small permanent quebradas tributary to the Tamacal. Beyond 

 the road bridge over the Tamacal above Bolivar are two such 

 quebradas. They are three to four feet wide near their 

 mouths and are rapid and rocky with heavy vegetation. Near 

 the source of one of these quebradas we took a single female 

 of capitalis, the only representative of the species seen at 

 Bolivar. 



8. Boqueron, between kilometer posts 68 and 69 on the 

 railroad above Tucacas, Venezuela. Elevation estimated as 

 375 feet. Lies in a heavily wooded and flat or slightly rolling 

 country. It is about thirty kilometers above Palma Sola, and 

 while the flora is generally similar the greater elevation and 

 the nearer approach to the mountains gives more variety to 

 the topography. One result of this is that Boqueron has many 

 beautiful streams of diverse character. South of the railroad, 

 in a southeasterly direction, are successively the Aroa, the 

 Chivacure and the Cabobo, the latter a larger stream than 

 the Aroa at Boqueron. Smaller tributaries of these streams 

 are not numerous. They may be, at this season, little isolated 

 pools of water or, more rarely, fine, clear quebradas, with low 

 rapids and pools and frequent growths of Cyclanthus bipar- 

 titus (see discussion under Bejuma). At kilometer post 70 a 

 trail to the north leaves the railroad and, passing through forest, 

 comes to the Rio Yumarito, a beautiful stream six to twelve 

 feet wide, with some deep, broad pools. There are some gravelly 

 rapids and occasional rock exposures where Cyclanthus grows. 

 Boqueron is a delightful region, but we found it most disap- 



