EUCHONTHA; CERAEOTRICHA. By Dr. Martin Hering. 
519 
St. decorata Dgn. Forewing black with a yellow basal stripe as far as % of the wing and a similar decorata. 
transverse band from the costal margin to behind the 1st cubitus. Hindwing black with an oblong yellow 
spot distally to the cell below the costal margin. Forewing beneath at the base bluish-white, the hindwing 
bluish-white in the hasal half and beyond it. Expanse 25 to 29 mm. Colombia. 
St. coras Drc. (= biplaga Dgn.). Forewing blackish-brown with a broad white basal streak behind corns. 
the cell and a white spot distally to the cross-vein. Hindwing with a white streak in the cell, distally pro¬ 
longed and expanded across it, but not reaching the distal margin. A narrow and short postcellular streak. 
Forewing beneath with a white basal streak, otherwise as above, hindwing beneath more extensively white. 
Expanse 21 to 23 mm. Ecuador. — In flaviplaga Dgn. the white markings are yellow, those of the hindwing flariplagu. 
larger. 20 to 22 mm. Colombia. East Ecuador. 
St. aborta Dgn. Forewing pale black, the space behind the cell as far as the rise of the 2nd cubitus, abnrin. 
the base of the cell, and a large spot distally to the cross-vein are whitish hyaline. Hindwing hyaline white, 
with a pale black distal margin, narrowing down towards the tornus, at the hind-margin some black hairs. 
Expanse 21 to 22 mm. Colombia. 
St. grandimacula Dgn. Forewing blackish-brown, veins paler. A white spot slightly irrorated with grandhna- 
grey on the outside of the cell, a pale basal streak at the cell, beneath all the markings are more distinctly 
white and larger. Hindwing brown with a white central spot, beneath all white, only a pale stripe at the 
costal margin and a broader one at the distal margin are black. Expanse 26 to 29 mm. Bolivia. 
St. euchonthoides Prt. (69 i). Forewing blackish-brown, veins yellowish, a yellowish-white spot behind the euchonthoi- 
cross-vein strewn with darker scales. Hindwing pale brown, at the base irrorated with a darker colour, margins 
blackish-brown, particularly broad the hind-margin. Forewing beneath similar, often yet with a light basal 
streak, hindwing beneath centrally whitish. The yellowish-white colouring of the hindwing is very variable, 
often also above very extensive. Bolivia, Peru. — In lactigera . subsp. n. from the Chanchamayo all the mar- lacHgera. 
kings are snow-white instead of yellowish-white and very hyaline. $ type in the Berlin Museum. 
18. Genus: iaaiclaoaiilia Wkr. 
Distinguished by the cell of the $ forewing occupying only % of the wing. 
E. clareta Dgn. (= memor Warr.) (69 i). Forewing brownish-black, veins paler, a broad, slanting, clareta. 
white transverse band from the costal margin to the analis before the tornus, a small white subapical spot 
parted by the vein. Hindwing greyish-brown, apex darker, costal margin whitish, veins paler. Expanse 30 mm. 
Peru. 
E. commixta Warr. (= chilion Drc.) (69 i) is similar to the preceding, forewing at the transverse commixia. 
band only greyish hyaline, hindwing white, base grey, with broad black margins. Beneath in the forewing 
the median spot extends to the base. Expanse 32 mm. Peru, Bolivia. 
E. ciris Drc. (= circis Dgn.). Forewing black, veins black in the otherwise white basal third. A white dr Is. 
double spot before the apex and a similar one above the tornus. Hindwing white, distal margin broadly black. 
Expanse 28 mm. Ecuador. 
E. frigida Wkr. (= sublactigera Wkr., albimacula Warr.) (69 k). Forewing basally white, with blackish- frigida. 
brown veins (except the 2nd median). Apical half blackish-brown with a white subapical transverse band, 
hind-margin blackish-brown. Hindwing white in the central area a similar subapical spot, otherwise blackish- 
brown. Colombia, Ecuador. — In loti gin er vis Fldr. also the 2nd median in the forewing is broadly blackish- longinervis. 
brown. Guiana, Amazons, Peru. 
E. castrona Schs. is like the preceding, hindwing quite blackish-brown, beneath paler grey with dark caslrona. 
veins. South East Brazil. 
19. Genus : Ceraeotriclia gen. nov. 
Antennae of the 2 only with cilia; in the forewing the 2nd to 5th radials are forked, the 2nd rising- 
before the 5th before the 3rd and 4th. The 1st median nearer to the 2nd than to the radial ramus, the 
1st cubitus often nearer to the 3rd median than to the 2nd, in the hindwing the radial ramus and 1st 
median are forked, the 3rd median and 1st cubitus separated. Posterior angle of cell far produced. Type 
of the genus: G. cuneifera Dgn. 
G. cuneifera Dgn. is extremely to Xenom. pallinervis Fldr., but the hindwing is uni-coloured quite cuneifera. 
light brownish hyaline, in the forewing the white basal spot is absent, between the cell and axillaris a uni¬ 
formly white stripe instead of two spots; ground-colour of forewing red-brown, distal margin and hind-margin 
wood-coloured brown, behind the cell a white slanting stripe proximally extending from the rise of the 2nd cubitus 
to the axillaris, behind the cross-vein a white, centrally hyaline spot, before the light distal margin a white 
crescentiform line. Colombia. Described by Weymer in „Stiibels Reise“ on p. 42 No 28 as Stenopla.stis 
pallinervis Fldr. 
