Puhi. :';. X. 1913. \DELPHA. By H. FRrnSTORFER. 5i>l 



descriliecl fmm Surinain, inhabits all the three Provinces of Guiana and the whole district of the Lower Amazon. 

 The under surface is sometimes nuK'h darker striped than it is in our figure, es])ecially specimens from Cayenne 

 and Obidos are thereby conspicuous and thus form a transition to implicata -subsp. nov. Here the fore- iiniiHidid. 

 wings exhibit from the inner margin as far as up to the middle median a white hue of the ochreous median 

 band, being otherwise also much narrower. The white meflian band of the hindwings, however, broader, the 

 basal area of the hindwings covered with violet instead of whitish. Peru. — bartolme ■'>iihs]). tiov. was recently ixirlriliiic. 

 discovered in Mato Grosso where it occurs beside ^4. plemure wliicli is so jiearly allied with it on the 

 upper surface. The bands of the upper surface analogous to implicata with the sole exception of the much nar- 

 rower white strij^es on the hindwings. The under surface eminently differing by a reddish tinge on the median 

 pai't of the forewings. The whole distal area of the hindwings likewise extensively covered with reddish-brown. 

 A. plesaure. We have succeeded in most favourably demonstrating the markings by our figures 

 (107 a). The yellow zone as well as the white one of the forewings vary according to the habitat of the buttei'- 

 flies. The under surface is likewise variable according to the locality, either with prominent bauds or faded. 

 plesaure Hbn. A form being rarely found in collections, with yellowish-brown though insignificant white embed- iilrsaiirc. 

 ment of the forewings, being prolonged as far as to the inner margin. The orange-coloured part of the fore- 

 wings are besides much less extensive than in our figure. Habitat unknown, presumably Guiana. — cera- icrachalc^. 

 chates subsp. nov. approaches the most closely the illustrations in Huebxee's ..Zutrage", by the reddish-yellow 

 colour running through the whole forewing and the strangulated shortened white colour. The under surface 

 peculiarly faded, discoloured into wax-yellow. Mato Grosso. — sirona suh.sp. nov. from Eastern Bolivia >'ii-o,i(i. 

 shows, beside its considerable habitual size, also a broader yellowish-brow ii band of the foiewings; under sur- 

 face also darker and more variegated, with more pregnant reddish-brown stripes than in the allied races 

 mentioned so far. — heredia .subsp. nov. (107 a as plesuure) is a most characteristic territorial form from Cen- lirn-did. 

 tral Brazil, recognizable by the elongated white of the forewings extending as far as to the wing-centre at the 

 cost of the reddish-brown part. Bahia, Espiritu Santo. — antoniae .SHb-sp. nov. resembles heredia except that itnioiiinf. 

 the yellowish-brow^n part of the forewings is more irregular, the white stripes narrowed and the under surface 

 on the forewings with darker yellow, and on the hindwings with sharper reddish-brown stripes. Santa Catharina. 

 A. cytherea forms one of the most intuitive examples of the geographical variability of a species the 

 amplitude of which we illustrate by our 7 figures 108 b. On the upper surface, the reddish-yellow as well as 

 the white part may shade off in different extent according to the locality. The under surface, however, is 

 more constant in the ground-colour, even extremely constant, and even the width of the white median 

 band is subject to but slight modifications. The greatest variability is exhibited by the Colombian species 

 among which we meet such being striped the darkest brown on the under surface, beside such with a supple- 

 mentary yellowish-brown median band on the upper surface of the hindwings (olbia, 108 c). With the exception 

 of Mexico, cytherea is distributed throughout the whole of Central America and the .southern continent from 

 Colombia to Bolivia, and from the W^est Indies to Santa Catharina. The sexual organs are closei- allied to the 

 coc///a-group than to the following A. iphicla-ior\\\», they are, on the other hand, so well specialized that 

 we may speak, also according to the configuration of these organs, of an independent A. cytherea-gioup. 

 Valve of about the contour of the com/a-valve, with extremely broad and deep gioove, the short point 

 without spines, but with very long hair as in cocalit. Clunicula relatively short, roundish, uniform. Penis broad, 

 little chitinized; sca^^hium with thin arms. Uncus like in A. cocala, but basally less swollen. — niarcia miiriiii. 

 ■sub.'ip. nov. (108 b) is found from Guatemala to Colondjia. Yellow zone of the forewings narrower than in the 

 typical form, as well as the white band of both the wings. — despoliata .mbsp. nov. (108 b as cijthereu) is (IfxpoiUild. 

 the common form of Colombia. The reddish-yellow part of the forewings darker than in cytherea, L., somewhat 

 narrower, the white spot of the forewings anteriorly not ending in a sharp point, but suddenly interrupted 

 broad at the posterior median. — daguana -^ub-yp. nor. (108b) forms the melanotic extreme of the whole (liKjiKmn. 

 species, with a white median band being only as thin as a thread. The reddish-brown bands of the under 

 surface more prominent than in all the known cytherea-v&cof^. The white stripes are not always so much re- 

 duced as in our figure; they may be half as broad again, as is shown by two ^q of my collection. Rio Da- 

 gua (Western Colombia); type in the Tring-Museum. — o\\»ia Fid r. (KKSc) is the lightest form; conspicuous <,lhi,i. 

 by a postdiscal .yellow band of the hindwings. Colombia, rare, probably from the Cauca \'alley where it 

 occurs as aberration beside despoliata. — tarratia subsp. nov. (108 b) approximates despoliata. though its idn-niUt. 

 yellow region of the forewings is also on the decline, whereby it a23])roaches more daguana and marcia. The 

 white spot always goes beyond the lower metlian of the forewings in a distinct pointed ])rolongation. Ecuador. 

 Type from Paramba. — lanilla subsp. nov. (108 b) is found from Peru to Bolivia and is further iidand lan'illd. 

 distributed as far as Mato Grosso. Ujiper surface most nearly allied to cytherea except that the white spot 

 of the forewings is prolonged fiu'ther anteriorly and the median band of the hindwings considerably broa- 

 dened. — insularis subsp. nov. (108 b) beats even lanilhi in the extent of the wliite median band. The hind- iiisK/nri.-:. 

 wings bear only one (instead of two) blackish-giev submarginal bands. Trinidad. Similar forms are found also 

 on the other West Indian Isles, and Dotbleday reported cytherea already in 1S47 from the Isle of Sa. Lucia. 



— cytherea L., the nomenclatiu-al type, described from Surinam, goes to the north as far as Venezuela and ii/ihiird. 

 the Ui)per Bio Negro. The yellow area of the forewings somewhat more extensive and paler than in lanilla. 



— As nahna S)n. a form being similar and c(|ual 1o olbia is described from Merida (^'enezuela) with somewhat luilndi. 



V «t) , 



