Pratt-Imaginal Discs. 
Plate 1. 
eQQsPPP^pQ-—- a ran.id. 
fQr-0 OcjC' i -T)n * 
cfyS^P^sQS--''' 
%oOQ?(Wr)% 
-..grrrm.vt. 
HSP del 
i bCdnn. 
Proc.Boston Soc. Nat Hist. Vol. 29 . 
B.Meisel, lith. Boston 
