810 THECLA. By Dr. M. Draitdt. 



123. Thius-Group. 



cestri. Th. cestri Beak. (145 i) is characterized by the forewing being somewhat angular on the lower radial 



vein, the hindwing tailless, with a somewhat protracted anal angle. Above brown with a large black discal 

 spot at the cell-end of the forewing; the hindwing towards the base with blue-grey hair, and between the median 

 veins a small black marginal spot. Fringes white, on the forewing speckled darker. On the under surface the 

 forewing is brown with a whitish apex, the hind\^ing in the discal area and at the margin whitish with irregular 

 macular stripes and a black small spot between the median veins before the border. In the $ the hindwings 

 are above extensively blue. Mexico to Costa Rica. 



cydia. Th. cydia Heu\ (145 i) is smaller, the cj above also blue like the $, the latter exhibiting above in the 



costal part of the hindwing at the apex a large square brown-grey spot. Beneath there is little difference. 

 Brazil, Colombia, Paraguay. 

 davara. Th. davara Hew. (145 i) does not differ above from cydia, it therefore has bli^e on the hindwings also 



in the (J, beneath the hindwings are more whitish, the spots at the base of the hindwing are partly confluent 

 with those of the postdiscal band, on the rusty-yellow forewing the postdiscal band is more coherent. Brazil 

 (Sao Paulo). 



ihius. Th. thius Hbn. (= agra Hew., bazochii Godt., infrequens Weeks) (145 i, k). Forewings like in the 



preceding, but less angled, the hindwing except the costal-marginal part quite light lilac-blue, the black marginal 

 spots extremely small. Beneath also marked like the preceding species, the marking, however, is partly covered 

 by brown colour, consisting of a large triangular spot at the costal angle of the hindwing, a similar one in the 

 basal part of the proximal margin, and a small one at the base of the costal margin above it; from the base 

 a light stripe runs along the lower radial vein through the cell to the margin. Brazil, Colombia. 



124. Americensis- Group. 



americensis. Th. aiTiericensis Blch. (145 i) is above plainly brown, with whitish grey fringes, without a tail. 



Beneath light brown, on the forewing with 5 small black postdiscal spots, the hindwing with 2 basal spots and 

 a postdiscal, irregularly curved row of spots, which is analwards proximally somewhat orange; small submarginal 

 brownish spots, at the anal angle and between the median veins spotted orange. Chile. 



tucumana. Th. tucumana Drc. (145 k) greatly approximates the preceding, above with some lilac-blue on the 



hindwing and 3 small black anal spots, beneath just like americensis, but at the costal margin of the forewing 

 and across the whole hindwing thickly strewn with grey and brown, so that the markings grow indistinct. 

 Argentina. 



iicolor. Th. bicolor Phil. (= quadi-imaculata Hew.) (145 k) is easily discernible above from americensis 



by the large orange discal spots on both wings. Beneath the ground-colour is greyer, in the disc of the forewing 

 likewise orange, otherwise marked like americensis. Chile. 



heodes. Th. heodes Drc. (145 k) differs from the preceding species by the basal area being dusted with a pecu- 



liarly lustrous grey-Avhite on the upper surface of both wings and also at the proximal margin of the forewing; 

 the orange spot of the hindwing is reduced in the q, while in the $ it is absent altogether. Beneath light brown, 

 strewn with white, marked like bicolor, but the postdiscal bands placed nearer to the margin. The $ is lighter 

 and almost without any marking. The q is without the dark discal spot exhibited by the preceding species above. 

 Described from North Peru. 



icgaea. Th, tegaea Hew. (145 k) we append yet here. Above brown with an orange spot at the anal angle 



of the forewing and at the border of the hindwing, which is narrower in the $; the q exhibits an oval, dark 

 brown scent-spot bordered with a still darker colour. Beneath grey-brown, with dark cell-end streaks and 

 with postdiscal bands composed of black, white-ringed spots, running parallel to the margin; beyond them 

 similar submarginal rows of spots, on both wings analwards distally bordered with orange. From British Guiana 

 and Brazil. 



airana. Th. atrana Schs. (145 k) being allied to the following species may be placed here as a transition. 



Above brown with a broad red-j- ellow marginal band of the hindwing. Beneath light grey-brown, on the forewing 

 with three small brown, distally white postdiscal spots; hindwing with a postdiscal row of black lunular spots, 

 being proximallj' bordered with vermilion, distally with white; black submarginal lunae bordered proximally 

 with white border on a broad vermilion marginal band which projects towards the margin on the ends of the 

 veins and extends from the anal angle to the middle radial; behind there are yet brown marginal lunae and 

 a black marginal line. Expanse of wings: 21 mm. Brazil (Parana). 



taranm. Th. taratlia Hew. (145 k, 1), a well-known common species, differs in the cj at once by the black- 



brown scent-spot in the cell of the forewing; the orange colour on the hindwing is confined to three small coherent 

 spots at the anal angle, in the cell-spaces between proximally dusted whitish, distally spotted black; the red 

 marginal band of the hindwing beneath, however, extends farther than to the middle radial, mostly even beyond 

 the upper radial. Brazil. 



