a collection of Heliconinc forms from French Guiana. 417 



Heliconius melpomene cybele ab. elegantula, nov. 



Fore -wing black with the base red, and extending nearly half- 

 way across the cell. A broad red band from costa to near tornus, 

 edged broadly internally with yellow as far as vein 2. Some suf- 

 fused yellowish scales extending inwards across the cell. Hind-wing 

 black with a red basal streak. 



Habitat. French Guiana, St. Jean de Maroni. 



Type in coll. Joicey. 



This form is analogous to lucinda, and may be described 

 as a lucinda with a red basal area to both fore- wing and 

 hind-wing. 



Heliconius melpomene cybele ab. faustalia, nov. 



Fore-wing black with the base red, extending half-way across 

 the cell. A large yellow patch surrounding the crescent-shaped 

 black discoidal spot, similar to H. melpomene penelope. On the 

 outer margin of the patch between the costa and vein 3 is a broad 

 edging of red. Hind-wing black with a red basal streak. 



Habitat. French Guiana, St. Jean de Maroni. 



Type in coll. Joicey. 



This rare form, of which there is but a single * specimen, 

 is a red-edged eulalia, Riff., also a rare form. The solid 

 yellow fore-wing patch, such as is found in the common 

 Bolivian form penelope, appears to be very rare in French 

 Guiana, but with the intermediates it is clearly only a 

 closing up of the open patch of cybele. 



Heliconius melpomene cybele ab. dianides, nov. 

 (Plate CVII, fig. 7.) 



Fore-wing black, with a very narrow red transverse band wholly 

 outside the cell. The base red. A small yellow mark on the inner 

 edge of the red band just below costa. Hind-wing black with red 

 basal streak. 



Habitat. French Guiana, St. Jean de Maroni. 

 Type in coll. Joicey. 



This form is equal to a melpomenides, with the addition 

 of red base to fore- and hind-wing. 



Every gradation occurs between diana and dianides. 



* A second specimen of this form was already in the Hill 



JVIuseum. 



