852 HYPOCRYPTOTHRIX; POLYTHRIX; EUDAMUS. By Dr. M. Draudt. 



ercbus. T. erebus Pldtz (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. 

 pmccia. T. praecia Hew. (165 g) greatly resembles herrichi, but the red colour 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 hindwing, 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 sjjots. Brazil. 



corytas. 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. 



gaudiaUs. T. gaudialis -ffew. (161 a, as dubius) differs little from corytas. The ground-colour 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 surface. This beautiful species 

 originates from the Chiriqui. 



hivUtalus. T. bivittatus Mab. & BouU. 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. 



riifibasis. T. rufibasis Mab. dh BouU. (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 liair; 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 postmedian bands; the whole rest of both wings beneath is black. French Guiana. 



perissogra- T. perissographus Mab. (165 g) is on the forewing marked exactly like corytas (165 g), but the reddish- 



phus. 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. 



paplas. T. papias Heiv. (165 g) is smaller, otlierwise 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 tlie 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. 



3. Genus: Hypocrypfothrix Wts. 



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

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

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



teutas. H. teutas Hew. 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 Eudam.us is probably scarcely justified, for the sole difference consists of a 

 secondary sexual mark in the ^ exhibiting, like 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 : 



metalUs- P. metallescens Mab. (166 c) somewhat resembles the £'i^(^amM.s-species of the cholus-gYow^ (161c); 



cew«- above brown, tinted rusty-yellow, with 3 discal vitreous spots, placed almost like in metophis (160 d), and 3 small 

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

 the hindwing with a white antemarginal band. Brazil (Manaos) and Panama (?). 



5. Genus: Hiiflanius Swn. 



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

 eurycks and orion. The antennal club is bent round like a hook close behind the thickest pait. The cell of the 



