AMPHISELENIS ; CALYDNA. By Dr. A. Seitz. 693 



Bolivia to South Peru has the wings above traversed by regular lines, particularly the hindwmg is very much 

 marked. — merita Godm. (135 i) has no more black markings on the hindwing, except a row of dots in front meriia. 

 of the border; the under surface is tinged reddish; from Coroieo (Bolivia). 



L. oileus Godm. (135 h). Only half as large as most of the other species. Above dirty dark-brown, oileus. 

 clouded irregularly, speckled in black, before the apical part of the costa 2 very small whitish vitreous spots. 

 Beneath in the costal part of the forewing blackish, otherwise dull bluish-white, with dark speckles. In the 

 (larger) $ the ground-colour shows a yellowish-brown hue. Widely distributed, probably at home in the 

 whole tropical South America, but rather rare. 



72. Genus: Aaiipliiseleiiis Bob. 



An isolated species which is sufficiently characterized by the shape of the wings. The apex is pro- 

 longed in the shape of a sickle, and the middle of the border exhibits an obtuse, lobular tooth. In the 

 exterior the animal greatly resembles certain Achlyodes with which it corresponds also in the colouring. 



A. chama Stgi'. (128 h). Dark-brown, the forewings with indentations at the apex, the inner angle, chuma. 

 before and behind the middle of the border; the hindwing with an obtuse tooth; both wings are crossed by 

 dark nebulous lines, the distal one of the (^ beneath being faintly metallic. The $ is above more brownish 

 yellow, beneath yellowish, almost entirely without metallic lines; in the Cauca Valley in Colombia and in 

 Venezuela; but not common. 



73. Genus: Csftl^tliia DM. 



The essential difference of this genus from most of the other genera of the Erycinidae consists in 

 the constancy of its forms, resulting in the specimens of one species, even from very remote habitats, not 

 exhibiting any differences. I consider this persevering adherence to the typical form to be an effect of the 

 great power of flight and a reduced adherence to localities. The Calydna are robust animals Mdth strong wings 

 and a power of flight and diffusibility comparable with that of the Hesperids of which the Calydna remind 

 us also m their habits. They have, moreover, the habits of the other Erycinidae, coming to wet places and 

 blossoms, they have an almost buzzing motion of the wings and a compact shape. The antennae are of medium 

 length with a feeble club, the head is broad with a flat forehead beyond which the palpi do not project, 

 the thorax is in many species, such as caieta, stout almost like in night-butterflies and decorated with varie- 

 gated markings. The wings are often densely dotted and marked with transparent spots, the legs are rather 

 short; in the forewings only the first subcostal vein branches off before the cell-end out of which the 2nd 

 and 3rd rise. — In the hindwing the veins do not exhibit any deviations; frequently, however, the anal part 

 of the hindwing is slightly lobate and the apex of the forewing produced. Mengel includes 29, Stichel 24 

 species in this genus. 



C. thersander Stoll (135 i, k). One of the largest species, blackish-broM'n, marbled in slate-blue, spotted ihersander 

 darker, the forewings with small white vitreous dots, the hindwings in the (J with a sky-blue, in the 2 with 

 a slate-blue distal-marginal part. Guiana and Brazil. Not common. 



C. charila Hew. (135 1). The ^ resembles the thersander-'!^, but the small vitreous spots in the forewing cMHla. 

 are somewhat larger, and the blue united to festoon-like arcuate lines, particularly in front of the border. 

 The $ is quite different, similar to the $ of caieta (135 1), but in place of the uniform yellow spots of the 

 latter there appear small fenestrae bordered by red-brown and alternating with opaque red-brown spots, bet- 

 ween which blue-metallic intermediate spots are embedded. Upper Amazon, as far as into Peru (Pachitea); 

 rare. 



C. caieta //eiy. (135 1). The wings are densely covered with whitish-yellow (^J) or honey -y ellow ($) spots; caicia. 

 beneath like above, the spots slightly larger. Reported from the Upper Amazon; before me are typical spe- 

 cimens of both sexes only from Venezuela (Rio Caura, Suapure). Rare. 



C. chaseba Hew. (136 a). On the upper surface the reddish iron-grey ground-colour is crowded with cMseha. 

 white vitreous dots which turn to streaks in the cell of the forewing. Beneath the hindwings are dusted 

 with a mealy, white colour. The ^ is almost exactly like the figured $, but the small spots are a little finer 

 and the forewings somewhat more pointed. Before me are typical specimens only from South Brazil (Rio 

 de Janeiro, Espiritu Santo), but it is described from the Amazon. Rare. 



C. punctata Fldr. (136 a, as pv.nctula) resembles the preceding species, but it is smaller, the j^' above punctata. 

 jet-black, the $ yellowish-brown, the small dots fine like the stings of a needle, the under sm'face not poMdcred 

 in white. Ecuador, Peru, Bolivia. The finding-place ,, Santa Catharina" is probably due to a confusion with 

 the preceding species. Less rare. It reminds us of Cremna actoris. 



C. calamisa Hew. (135 1). (^ black with bands and spots of a magnificently deep-blue lustre, between calamisa. 

 them white vitreous dots. Under surface dark brown, finely striated and chased, the small vitreous spots 

 here of a mother-of-pearl lustre. $ entirely different, on both surfaces lOie the ^ beneath, copiously striated; 

 the small vitreous spots are somewhat larger. The ^ somewhat reminds us of Cremna meleagris, just like 

 Calydna caieta of Cremna eucharila. On the Amazon, from Santarem to Peru. 



