which the ear is borne is slender. he rachis flap, which 
represents a lateral wing of the cupule, is prominent. 
Late Nal- Tel: Of the 78 cobs recognized as belonging 
to the race Nal-Tel, only 18 are counterparts of the mod- 
ern Nal-Tel of the Yucatan peninsula. These are desig- 
nated as Late Nal-Tel. The cobs have the same shape 
and approximately the same size as cobs of the living 
race. A comparison of the two is made below: 
Characteristics Modern Archaeological 
Ear length (mm. ) 79.0 85.5 
Cob diameter (mm.) 19.2 21.2 
Rachis diameter (mm.) 9.2 11.4 
Row no, 10-12 10-12 
Typical cobs of Late Nal-Tel are illustrated in Plate 
XXXII. 
Early Nal-Tel: The remaining 60 cobs resembling 
Nal-Tel represent a more primitive form of this race. 
The cobs are shorter and more slender. The rachises are 
smaller in diameter and, perhaps as a consequence, the 
ears have a lower row number. The glumes are fleshy 
and, although not actually longer than those of Late 
Nal-Tel, are more prominent in relation to the slender 
rachis. 
The Early Nal-Tel cobs were further divided into two 
types, A and B, the former being smaller and more slen- 
der than the latter. These differences may be due in part 
to environmental effects. However, since a separation 
has been made for purposes of study, the data on the two 
types are presented separately. Cobs of the two types 
are illustrated in Plates XXX and XXXI. 
zit-Bacal: Six cobs in the collection are definitely 
of a distinct type which differs from Nal-Tel. These are 
long, straight and slender, with especially slender ra- 
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