MANN: THE ANTS OF BRAZIL. ARS. 
137. Strumigenys smithi Forel. 
A single worker from Para is in the collection. 
138. Strumigenys schulzi Emery. 
A single female and several workers were taken at Para, the type- 
locality. 
139. Atta cephalotes (Linné). 
Common throughout the forest regions, in enormous colonies. 
Numerous specimens were taken at Porto Velho, Abuna, and Madeira- 
Mamoré Camp 41. 
140. Atta sexdens (Linné). 
Many specimens were collected at Natal, Ceard, Independencia, 
Baixa Verde, Ceardé-Mirim, Manaos, and Porto Velho. 
This ant (the “sauba”’ of the Brazilians) ranges throughout the 
tropical portions of South America, and is by far the most important 
economically of all ants. It strips many cultivated plants of their 
leaves, is especially attracted to citrus species. It takes also dried 
vegetable matter, in particular farina, the staple food of Brazil. At 
Independencia, back of our house was a large pile of kitchen refuse, 
and this was visited nightly by hordes of workers, which collected 
particles of farina, bread, and other vegetable material. 
All sizes of workers forage for leaves, generally at night, but also 
in late afternoons or on cloudy days. The smaller workers of this 
and the preceding species often ride upon a portion of a leaf which is 
being carried by a large one and this has given rise to the native belief 
that the larger workers are blind and are guided by the smaller ones. 
141. Acromyrmex (Moellerius) landolti Forel. 
Common at Natal and Baixa Verde. 
This species was described from a specimen from Colombia, and 
Forel has since recorded it from Bahia, and Emery from Venezuela. 
At Natal and Baixa Verde nests were very common. At the entrance 
is built a turret of grass, from one to six inches in height. Through 
