- 
a 
r; 
is 
Lt 
(Ate 
ye 
“ 
EXPLANATION OF PLATE XVIII. Fk ¥ 
| 
LampsILis ALATus Say. % natural diameter. he! 
e 
% 
5 a 
’ 
i 
’ 
a 
i 
} 
ry 
= 
- 
t 
