collected hy W. J. Burchell in Brazil. 359 



side, like tlie roll of a vessel. The underside of these Danainre 

 is even more conspicuous than the upperside, and it occurred 

 to me that the significance of the peculiar attitude and move- 

 ment was to display the underside during flight. The 

 metliod adopted is probably the only means by wliich this 

 end could be achieved. — E. B. P.] 



Lycorea halia, Hew. 



10. 11. 25. = 188. Minas Geraes. 



31. 12. 25. = 189. Rio de Janeiro. (As 166.) 



i?^.+ 1.3. 26. = 190. Magd. (As 121.) 



Bz. 10. 3. 26. = 191. Rio de Janeiro. 



Bz. 19. 3. 26. = 192. „ " In the Valley of 



Catombi.'' 

 1. 4. 26. = 193. „ " In the Valley of 



Catumbi." 

 30. 10. 27. = 194. E. of Goyaz. On road from Meia 



Ponte. " Conceicjio." 

 24. 12. 27. S = 195. Goyaz. 



Name and dates agree with Westwood's list, except that he 

 refers to a ninth specimen captured on 8. 2. 26, " Organ 

 Mountains (in a ride to the Cattle Pounds and the Milho 

 Rocja)." 



[These specimens may afford a deeply interesting instance 

 of change in something under three quarters of a century, 

 or, on the other hand, the results may be merely due to a 

 deepening in the tint of a yellowish pigment owing to age. 



Lycorea halia is an outlying member of Blandford's 

 Group 3, "East Brazilian Type," Division (a), having '' the 

 apical spots on the fore wing yellow." This important group 

 was shown by Mr. W. F. H. Blandford to the Entomological 

 Society in 1897 (see Proc. Ent. Soc. Lond., May 5, 1897). 

 It is mainly characterized by a bright yellow horizontal band 

 traversing the hind wing parallel with the inner margin of the 

 fore wing. The Lycorea^ being an outlying member of the 

 group, has a pale yellowish band, which is very different from 

 the bright tint of the more centrally placed members, such as 

 the species of HeJiconius. Now Burchell's specimens are 

 far more removed from the group than those of recent date, 

 inasmuch as the band is but slightly paler than the tawny 

 ground-colour of the wing. In favour of the view that a 

 change has actually occurred and is here registered are the 

 following facts: — (1) the specimens are, as a whole, singu- 

 larly perfect ; (2) one specimen is lighter than the rest, its 

 band being of a shade common in recent specimens ; (3) the 



