EXPLANATION OF PLATE H. 
Fig. 1.—Scent-scales of male Maracuja butterflies, magnified 180 
times, a , Heliconius apseudes; b, H. besckei ; c, Eueides alijphera ; 
d, Colaenis [Metamorpha] dido; e, Dionejuno. 
Fig. 2.—Arrangement of scales in Heliconius besckei. a, lower 
scales; b, covering scales; c, scent-scales. 
Fig. 8.—Part of inner marginal [submedian] vein of fore-wing of 
Dione vanillae, male, 90; 1. 
Fig. 4.—Part of vein 4 of Colaenis [Metamorjpha] djido , male, 45 •; 1. 
Fig. 5.— ,, ,, 2 of Colaenis julia, male, 90; 1. 
Fig. 6.—Scent-scales of Colaenis julia, male. A, hind-wing; B, fore¬ 
wing. 
Fig. 7-—Scent-scales of Dione vanillae , male. 
Fig. 8.— ,, ,, Euptychia hesione, male. 
Fig. 9.— ,, ,, Erebia goante, male. 
