Explanation of Plates. 437 
Fic. LYCOREANA, 
8. Lycorea ceres: captured by C. B. Roberts, probably Dec. 1901 or 
Jan. 1902: in Hope Dep. 
9. Lycorea pasinuntia: captured by C. B. Roberts, Oct. 1901: in 
Hope Dep. 
The same specimen is represented in Fig. 2, Pl. XXVII. 
HELICONINA, 
10. Heliconius silvana ab. divisus : captured, in 1904, by G. C. Cole 
at Tumatumari, Potaro River, fifteen miles above confluence 
with the Essequibo : in Coll. Kaye. 
11. Heliconius numata: captured by C. B. Roberts, Feb. 10th, 1905: 
in Coll. Kaye. 
The same specimen is represented in Fig. 8, Pl. XXVI. 
12. Heliconius eucoma: captured by C. B. Roberts, about 1902: in 
Coll. Kaye. 
13. Eueides nigrofulva, 2 : captured by C. B. Roberts, June 30th, 
1902: in Coll. Kaye. 
14. Hueides isabella : captured, in 1904, by G. C. Cole at Tumatu- 
mari (see Fig. 10): in Coll. Kaye. 
BREATHE Seil. 
Series of Melinxa mnemeand Heliconius nwmata, showing parallel 
transition from barred to black hind-wings. 
All specimens are from the Potaro River, thirty miles above its 
confluence with the Essequibo, British Guiana. (Between the eighth 
and tenth mile from the Potaro, on the road to the gold mines.) 
All figures are ? of the natural size. 
1 Melinza mneme, ¢ : captured by C. B. Roberts, Aug. 28th, 1903: 
in Hope Dep. 
2. Melinxa mneme, ¢ : captured by C. B. Roberts, Aug. 28th, 1903: 
in Hope Dep. 
The same specimen is represented in Fig. 6, Pl. XXIV, XXV. 
3. Melinza mneme, ¢: captured by C. B. Roberts, Aug. 28th, 1903: 
in Hope Dep. 
4, Melinea mneme, ¢ : captured by C. B. Roberts, Aug. 28th, 1903 : 
in Hope Dep. 
5. Melinea mneme, g : captured by C. B. Roberts, Aug. 29th, 1908 : 
in Hope Dep. 
