7. Completely cylindrical, upright poles. This is the 
dominant type among the Amuzgos of southeastern 
Guerrero. It is very similar to the structures found by 
Starr (1899) among the Triquis directly north of the 
Amuzgo area. A. Perez Toro (1922) suggests that these 
circular constructions indicate a cultural influence of the 
negro population; however, it is clearly of local origin. 
This type (Pl. XX, B) is reported also from Tlacotepec, 
Guerrero (Weitlander and Barlow 1944). 
8. Maguey hut (Pl. XX, C). This structure is built 
much the same as a small scale model of a regular hut 
with a floor slightly raised above the ground and a two- 
pitched roof. The adaptation to the local semi-arid con- 
ditions of southern Puebla where it is used is complete, 
as it is built almost entirely of the different parts of the 
maguey plant (Agave spp. ). 
9. Trqe, wattle and daub sealed structure (Pl. X XI, 
A, B). This type of granary has its main area of distri- 
bution in the State of Guerrero (entire Balsas River 
basin, Zumpango del Rio, and towns of ‘‘la Sierra’’), 
although in former periods it was used over large parts 
of the tropical region along the Pacific coast. It is called 
trge in the lowland plains, and ewescumal in the upland 
towns. It is the most specialized and efficient type of 
granary found in the entire tropical region of Mexico, 
and its use has been extended to the storage of other 
crops such as sesame. Great variation exists as to shape, 
size and location of the trae, but the fundamental fea- 
tures of its construction are constant. 
Hendrichs (1945) gives a complete illustrated descrip- 
tion of these structures in his arresting and comprehen- 
sive study of the region formerly inhabited by the Cui- 
clatec Indians. The main features of the granary are as 
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