22 Field Museum of Natural History — Zoology, Vol. XII. 



La Ceiba, March i8, ipo8. A port near the southeastern corner of 

 Lake Maracaibo. The humid tropical forest of the south end of the 

 lake shows signs of attenuation here and evidently does not continue 

 much farther north. Small collections were mad§ here by Dr. N. 

 Dearborn. Sea level. 



Rio Chama, April 4-7, ip20. Specimens labeled Rio Chama are 

 from Hacienda Santa Catalina near the south bank of the Chama and 

 about 10 miles southwest of the city of Merida. Conditions are sub- 

 tropical with open forest alternating with cleared fields and coffee 

 plantations. Elevation 4500 ft. 



Rio Cogollo, February i^-March i, 1920. The Rio Cogollo is the 

 northernmost tributary of the Rio Apon which rises in the Sierra 

 Peri j a and flows into Lake Maracaibo, some 60 miles south of Mara- 

 caibo. Collecting was done from two camps, one on the river just 

 below the point where it issues through narrow canyons from the moun- 

 tains and the other some 10 miles north at the abandoned oil camp 

 known as La Luna. Light semi-arid tropical forest characterizes the 

 region and open grassy savanna occurs within 10 miles. Elevation 

 350 ft. 



Empalado Savanna, April 6-14, igio. Near the source of the Rio 

 Aurare some 30 miles east of Maracaibo. A region of light scattered 

 forest and open grassy savannas. 



Encontrados, February 10-27, \ipo8. A small town at the head of 

 steam navigation on the Rio Catatumbo in the humid tropical plain 

 southwest of Lake Maracaibo. Specimens noted from this locality 

 were collected by N. Dearborn and M. P. Anderson. 



Rio GuacHi, May j-j, ip20. The Rio Guachi rises on the northern 

 slopes of the northern Sierra and flows slightly west of north and 

 empties into the southern end of Lake Maracaibo some 12 miles east of 

 the mouth of the Rio Chama. Collections were made at the mouth 

 of the river and at a station called Santa Elena at the head of canoe 

 navigation some 20 miles above the mouth. Both localities are in the 

 alluvial plain characterized by heavy humid tropical forest. 



El Gu^yabal, March 12-17, ipio. A station about 10 miles north 

 of San Jose de Cucuta, Colombia. Conditions are semi -arid and tropi- 

 cal. Elevation 1000 ft. 



Lagunillas, Zulia, May 8-10, ig20. A village on the eastern shore 

 of Lake Maracaibo about midway of its length. Behind the village 



