THE AMERICAN MIDLAND NATURALIST 
90 
PLATE L 
~ 
8 
g 
{ 
4 
8 
> 
as 
= 
9 
> 
Sere 
ys 
=o 
xe 
> 
ds _8 
N 
7ransverse section thro ugh 
HH 
gon 
blema pee viens ~ fe ‘emale 
‘nner 
Am 
Tran sverse  secTion Through 
