ter differ from corn in having solitary instead of paired 
pistillate spikelets. Three of the cobs have stumps of 
what may have been staminate spikes, 
RAnL 290 
This is a small burial site of niche and shaft graves 
near Chiu Chiu, dating to the late prehispanic period. 
All graves were found looted, but a collection of maize 
cobs was made from the surface of the burial chambers. 
Thirty-seven cobs were collected, of which eighteen 
are red or pink, seven variegated, and twelve white. The 
predominating shape is tapering with rounded butts: the 
shanks are intermediate in thickness. The lower glumes 
are stiff, indurated and glabrous. On several of the cobs 
some of the lower glumes have spots of brown pigmenta- 
tion characteristic of maize-teosinte or maize- T’ripsacum 
hybrids. The rachillae are prominent and in some speci- 
mens protrude beyond the lower glumes. 
There are no marked differences between the red cobs 
and the white. Averages for lengths, diameters, and 
kernel row numbers for eight red cobs are 9.0, 2.4, and 
18.3; for six white cobs these measurements are 8.9, 
2.6, and 18.3. ‘Two of the red cobs from this site are 
illustrated in Plate NV, fig. C. Most of the cobs appear 
to be related to the modern race Chutucuno Chico, which 
still occurs in Antofagasta Province. 
RAnL 186 
Dating to the late prehispanic period, this site consists 
of a single isolated shelter/dwelling situated on barren 
terrain 2 km. from the Loa River. A cache of between 
400 and 500 maize cobs was found in the earth floor of 
the structure. 
The cobs are quite variable in shape and other charac- 
teristics. Some are tapering at both ends; others are 
' 60 | 
