ee throughout, hence Zea amylacea. This ear corresponds | 
518 
internal structure has been changed by age; this we cannot 
answer. The kernels in all are deeper than broad, hence sub- 
species C. 
No.1. Mtmmy corn from Peru. Ear-stalk small. Ears about 
4 in. long and 2 in. in diameter, cone-form or strongly tapering 
from a large and rounded butt to a rounded tip, about 23 kernels 
in a row, 18-rowed. No sulci betweenrows. Kernels 5 in. long, 
¥ in. broad, the apex flat with slightly rounded corners, and the 
sides but little tapering, hence rather rectangular in outline, in- 
dented, slanting forwards a little in their position on the cob, 
hence giving an appearance of imbrication to the ear. Colorex- 
ternally a chocolate brown, internally a dull white. Structure all | = 
starchy matter, hence Zea amylacea. ere 
No. 2. Mummy corn from Ancon, Peru. Expedition of F. A. — : 
Agassiz, Ear-stalk small. Ear 4 in. long, 114 in. in diameter, — 
tapering but slightly, the kernels rounding strongly over butt © 
and tip, 19 kernels to a row, 12-rowed. No sulci between rows. 
The kernels 4% in. long, 34 in. broad, distinctly creased indented, 
_ the apex flattish, the corners well rounded, the sides slightly 
tapering, set upright or at right-angles with the cob. Color ex- 
ternally chocolate brown, internally a dingy white. Structure all 
starchy, hence Zea amylacea. : me 
No. 3. Mummy corn from Ancon, Peru. Expedition of ei aoe 
A. Dorsey, 1891. Ear-stalk small. Ear 5% in. long, 134 in. st 
diameter, not filled at extreme tip, no sulci between rows, VeTY — 
close kernelled, nearly cylindrical, kernels rounded strongly 
over butt, tapering and finally pointed towards tip, 26 kernels 19 
a row, 16-rowed; the kernel surface compressed, leaving a flat 
triangular apex with the point forward. The kernel nearly ¥%2 en 
long by ¥ in. broad, the apex flat with very slightly rounded 
corners, triangular in shape, and a point projecting at right angles 
on the chit side, the sides slightly tapering, set upright on th 
cob, the point overlapping slightly the kernel in front, thus tte. 
the appearance of imbrication. Color externally chocolate bro 
_with a reddish tinge, internally a dingy white. Structure 
, 
what with the second variety of Rivero and Tschudi, but 
