852 



HYPOCRYPTOTHRIX; POLYTHRIX; EUDAilUS. By Dr. M. Dratot. 



erebiis. 



praecta. 



corytas. 



gaudialis. 



hivittatus. 



rufibasis. 



perissogra- 

 phus. 



paptas. 



T. erebus Plotz (165 g). Here the vitreous spots and blue colour are entirely absent, so that it becomes 

 very similar to Mim. aspilos (164 b). Described from Bahia. 



T. praecia Hew. (165 g) greatly resembles herrichi, but the red coloiu' turns here ochreous-yellow 

 and is more extensive, assuming on the hindwing more the shape of an antemedian band and of a proximal- 

 marginal ray, the light blue colour is more extensive, particularly on the liindwing, and on the forewing we 

 notice bluish marginal lunae towards the proximal angle ; besides there is a small, oblong hyaline spot between 

 apical and discal hyaline spots. Brazil. 



T. corytas Cr. (= pyramus Cr.) (165 g) has on the forewing 3 oblique, narrow hyaline bands and a 

 reddish-yellow basal area, whilst on the hindwing the whole disc is reddish-yellow. Found from Surinam to 

 Colombia. 



T. gaudialis Hew. (161 a, as duhius) differs little from corytas. The ground-colom' is a beautiful pure 

 bluish-black, the basal areas of the fore- and hindwings are more red than yellow, and there appear blue sub- 

 marginal diffuse patches, being still more prominent on the jet-black under siurface. This beautiful species 

 originates from the Chiriqui. 



T. bivittattis Mdb. cfc Boull. has, like plutia, a single tripartite hyaline band in the middle of the 

 disc on the forewing; below it, between it and the border, 2 blue spots. The hindwing shows a double blue 

 antemarginal band. Collar, thorax and abdominal base quite black, abdomen banded light blue; head black, 

 palpi ashy-grey. From the Amazon. 



T. rufibasis Mob. ds Boull. (172 a). Forewing quite black with an oval, twice crossed, vitreous spot 

 in the middle of the disc, the base of the wing with brown hair; hindwing with a light blue, straight antemarginal 

 band flowing together with a brown discal band mixed with light blue before the inner-marginal area. Beneath 

 the vitreous spot of the forewing is extended to the costa by a bluish continuation. The hindwing has 2 rather 

 parallel, antemedian and post median bands; the whole rest of both wings beneath is black. French Guiana. 



T. perissographus Mah. (165 g) is on the forewing marked exactly Uke corytas (165 g), but the reddish- 

 yellow colour is here blue, and the hindwing exhibits blue bands at the proximal margin, in the middle and 

 before the border, converging towards the anal angle. From Panama. 



T. papias Hew. (165 g) is smaller, otherwise very similar to the preceding the vitreous spots of the fore- 

 wings are much smaller, the blue colour somewhat more extensive, the blue basal area of the forewing parted 

 by a' black transverse band, and on the hindwing the black space between the median band and antemarginal 

 band forks in the shape of a Y towards the costal margin, so that a blue, triangular costal-marginal spot is cut 

 off. Brazil. 



teutas. 



3. Genus: Hypocryptothrix Wts. 



Allied to the preceding genus but in the habitus similar to certain FamgrMna-species. The cell of the 

 forewing is a little shorter, the two lower discocellulars about of the same length. The $ shows on the 

 forewing beneath a haii'-tuft at the base of the submedian. Only 1 species: 



H. teutas Heio. looks like Y. hadora (164 c) ; it has a black body with a scarlet neck. The black forewing 

 is lustrous green with a large, triangular, discal vitreous spot, the hindwing with white fringes. Described from 

 the Amazon. 



4. Genus: Polytlirix Wts. 



The separation from Eudamus is probably scarcely justified, for the sole difference consists of a 

 secondary sexual mark in the q' exhibiting, Uke in the preceding genus, at the base of the submedian on the 

 forewing beneath, a hair-tuft being covered by the strongly convex costal-margin of the hindwing. Only 1 

 species : 



metalles- P. metallescens 2Iab. (166 c) somewhat resembles the Eiidamus-species of the c^ofes-group (161c); 



cens. above bro'mi, tinted rusty-j-ellow, with 3 discal vitreous spots, placed almost hke in metofhis (160 d), and 3 small 

 apical spots; the bases of both wings strongly haired metallic green, also beneath with a green reflection, on 

 the hind\^'ing with a white antemarginal band. Brazil (Manaos) and Panama (?). 



5. Genus: £n(laiuns Swn. 



The species of this well-known genus, mostly having long tails, show in the male a costal fold, except 

 eurycles and orion. The antennal club is bent round Hke a hook close behind the thickest part. The cell of the 



