Collection nf M<((lame Gaston Fonrnier. 75 



Erijlhrocasluta si/phax, Fabr. 

 Pitpih'o siiphax, Fftbr. Syst. Entom. p. 480. no. 165 (1776). 



Ill the Ion"- .series from French Guiana there appears to be 

 but little variiition, most of tiicni haviiii>' the black patch in 

 the red border o£ hind win;^ at anal angle well marked ; but 

 one specimen is without it, and therefore agrees with the 

 Amazonian race. There are two specimens of a curious 

 aberration which has the oblique white band of tore wing- 

 interrupted at veins 2 and 3; for this aberration I propose 

 the name of intcrrnpta. 



2(> c? (^ , 6 ? ?, L'lwer jMaroni, French Guiana; 1 (^ , 

 Brazil? This locality is probably erroneous ; the specimen 

 was received from a German dealer bearing the ticket 

 ^^Castnia syphax, var. ? , Brasil." It is a male, and has the 

 anal black j^atch in red border of hind wing well defined. 



Erijthrocastnia syphax completa, subsp. n. 



This subspecies differs from the typical Guiana form in 

 wanting the anal black patch in red border of hind wing. 

 As already noticed, it occurs as an aberration in Guiana, but 

 in the Amazon district it is the typical form. One of the 

 si)ecimens from Santarem resembles the aberration interrupta 

 described above, inasmuch as it has tlie oblique white band of 

 fore w'ing interrupted at vein 2. 



^ 6 c?(f>pe), Santarem, Amazons; 2 c? (J, Para, Amazons. 



Xantliocastnia evalthe, Fabr. 

 Papilio evalthe, Fabr. Syst. Entom. p. 4S0. no. IGG (1775). 



I think that allowance should always be made for the 

 roughness of Cramer's figures. Lord Rotlischild has already 

 pointed out [Novitat. Zool. xxvi. p. 1 (1919)] that, though 

 the originals in the British Museum are very well drawn, 

 that the reproductions are often very coarsely executed; I 

 therefore adopt the name of evalthe, Fabr., for tlie form from 

 Fiench Guiana, and consider the name of evaltheiformis, 

 Iloulb., to be merely a synonym. 



8 c? (^j 13 ? ? , Lower Maroui, French Guiana; 1 ? , no 

 locality. 



Xantliocastnia evalthe quadrata, Rothsch. 



C'astnia {X(mthocastnia) evalthe quadrata, Rothsch. Novitat. Zool. ixvi. 

 p. 10 (1919). 



One specimen from Ecuador wants the characteristic 

 cellular yellow spot on underside of hind wing. 



