f 



A, 



104 STYX. By J. Boher. 



i theucharila. D. theucharila Dhl. (30 f), from Venezuela, also shows a general resemblance to an Ithomiid. The $ 



lul nella. has the hindwing entirely brown with black markings and broad yellow basal band to the forewing. — nella 

 't Bth., from Colombia, is not different except that the sjDots of the middle row are not yellow but transparent 



« white. 



^ hjsiiioe. D. lysinoe Hew. (30 d), from the Upper Amazon, is similar to siloe, but has in the male only a broad 



3^ellow marginal band, which is bordered anteriorly by a black band. 

 iV" lysinoides. D. lysinoides Stgr. (80 f), from West Colombia (Cauca Valley), is only known in the female. It is very 



similar to lysinoe, but has on the underside of the hindwing a complete row of white marginal spots. 

 v\ erythroe. D. erythroe Bates (30 f), from the Amazons (S. Paulo de Olivenga), is rather simil-AV to Hypoleria aure- 



■ J Q ^ liana, aureola, etc. It is rather variable, the red-yellow apical spot being sometimes divided into several spots, 

 XA<^ IVCV. - sometimes there is also a red-yellow spot near the inner angle. y 



>W batesi. D. batesi spec. nov. (= lysinoe var. Hew.) (30 f), from the Amazons, has not only very much red-yeUow ., / 



' marking on the forewiug but also a very broad red-yellow band on the hindwing. The transparent parts of - 



the wings are bluish. y 



leueonoe. D. leuconoe Bates, from the Amazon Eiver (S. Paulo de Olivenga), has a larger red-yellow subapical / 



\ 'melanoides. spot and yellowish subapical band on the hindwing. The latter is entirely absent in melanoides form. nov. \f 

 ' (30 f, g), from Ecuador (Coca), which also has smaller transparent spots on the forewing and somewhat broader 



black distal margin to the hindwing. This species is very similar to ItJioynia ida and ilerdina. 

 ^^ forhmata. D. fortunata Luc. (30 g), distributed from Mexico to Chiriqui, has a general Ithomiid-habitus, but 



»^jj^,__without special resemblance to any particular species. The transparent wings have black margins and bands. 



■ ^1"^ "The 9 has a whitish transparent subapical band, the ^ in its place some entirely glassy spots. — Whether y 

 ^^ ithomiella. ithomiella /or??i. nov. (30 g), from Ecuador (Balzabamba), is a form of /o)lMwaia or a separate species I am imable .^ 



\ to judge for want of sufficient material. The (J differs from fortunata-^ in that the glassy median spot of the 



forewing is broader but shorter and behind it there is another small glassy spot. The $ is very different from 

 fortunata-^, as may be seen from the figure. Beneath the ^ has larger white marginal spots, also the $ has 

 complete rows of larger and rounder white marginal spots, whilst the $ of fortunata has only 3 white dots on 

 the apex of the forewing. , ^ 



\^ anlherizc. D. antherize Hezy. (29h), from Mexico, is in the male similar to the /oriMtiato-?, it has no light markings 



J on the distal part of the forewing except a broad white subapical band. On the underside of the hindwing > 



fargochloe. there is a large white apical spot. — In argochloe Bates, from Ega, the margins of the white band of thei^ 

 forewing are sinuous, the hindwing is darker and has a submarginal narrow light band. 

 A^ avonia. D. avonia Heiv. (2911), from Ecuador (Quito and Balzabamba), has semitransparent j-ellow markings, 



A pallida, whilst pallida form. nov. (seasonal form?), from Ecuador (Paramba and Chimbo), has much lighter, glossy mark- 

 ings, entirely white in the distal part of the wing. The under surface is similar to the upper, but both wings 

 / bear at the distal margin a row of white spots. 



^pinthaens. D. pitlthaeus L. (= eumelia Cr., vocula Cr.) (29 h), from Guiana, the Amazons, etc., has yellow upper 



} ]j>Aji^ ~ surface with black markings ; in the $ there is also a black stripe at the costal margin of the hindwing. The 

 .'^J'Af und-er surface is similar to the upper, but has small white marginal spots and on the hindwing a red-brown 



X. \WV()HPT^Hfl. submarginal band. The species somewhat resembles the Ithomiid-genus Aeria Hbn. — amelina iifop//. (29 h), 

 from Peru, has narrower black bands and consequents larger yellow areas, also the red-brown marginal band 

 ela. on the underside of the hindwing is narrower. — ela Hew., from Ecuador, has in addition small yellowish 

 A submarginal spots at the inner margin of the hindwing and the submarginal band of the hindwing is yellow 



M instead of red- brown. 



ithomia. D. ithomia Hew. (29 h), from Ecuador, is similar to pinthaeus, but by the division of the postmedian 



yellow band 4 j-ellow spots are formed on the forewing, also the distal margin of both wings has a complete 



i row of white spots. 



Wmeihymna. D. methymna Go(?/. (30 g), from Brazil (Minas Ger^es), is above an exact copy of Heterosais gazoria 



Godt. (36 d), which flies together with it. Beneath the two species differ in that methymna has white marginal 



spots on both wings and on the hindwing an indistinct red-brown submarginal band. 



36. Genus: Styx Stgr. 

 As already said, the systematic position of this pecuhar genus is altogether uncertain. The idea that 

 Styx infernalis might be the $ of an Erycinid is however incorrect, since the ^ of infernalis is also known. 

 The external appearance of this insect is Pierid-Uke, similar to Davidina alticola, which is figured in vol. I, 

 pi. 19 b. The neuration of the forewing shows no striking differences, on the other hand that of the costal margin 

 of the hindwing is not unlike certain Ithomiids. In the structure of the palpi and legs the genus shows great 



vA similarity to the Erycinids. 



\ infernalis. S. infernalis Stgr. {iOg), from south-eastern Peru (Chanchamayo), is in both sexes transparent grey- 



black with lighter central part of the wings. Only a few specimens of this species are known, so that it would 

 seem to be verv rare or onlv to occur in a few restricted localities. 



A' 



