1092 
MEGALOPYGE. By Walter Hopp. 
lampra. M. lanipra Diycir (161 e) represents the Mexican edition of this species, distinguished by the larger ex¬ 
tent of the dark area of the forewing at the inner margin. Described and figured as radiata in Biologia Centr. 
Amer. 
radiata. M. radiata Schs. (161 f) is likewise closely allied and forms the southern race of tharops. The brown 
or light brown tints of tharops are blackish-brown here, all the white is more reduced. Whilst the prothorax 
and tegulae of tharops $ exhibit one white saddle each, the prothorax of radiata and also the tegulae of 
radiata -$ are blackish-brown. South-Eastern Brazil: Curityba, Sao Paulo, Itatiaya, Passa Quatro. Larva 
according to Jones (where it is determined as tharops) on Guava, partridge-coloured, ripe for spinning at the 
jlavivertex. end of March, but it emerged only in January after 320 days. — flavivertex Schs. with a yellow (instead of 
white) vertex is a somewhat differently coloured form occurring similarly also in other species. Sao Paulo. 
atbicotlis. M. albicollis Wkr. (= grandis, fasciata Wkr., vipera. Schs.) (161 f). The has a white vertex, the $ 
a brown one. besides the white and brown hair of the basal area of the forewing is smooth, or indistinctly 
curled only at the base of the wing, while it is distinctly curled in the $ beyond half of the wing; the curled 
hairs easily fall off. This species likewise exhibits considerable differences of size and colourings from blackish- 
brown to light brown. Especially the intensity of the white colouring varies frequently; for instance, speci¬ 
mens with a reduced white colouring of the forewings exhibit the generally white tufts on the femora and tibiae 
brown. Moreover, we meet with a yellow (instead of white) colouring of the vertex and tegulae. Widely distri- 
swpcrba. buted from Panama to Bolivia and South Brazil, Guiana, Amazons. — superba Hy. Edw. is the Central American 
race of albicollis distinguished by the claws, especially on the hind feet, being white-haired at the base. Gen¬ 
erally also the brown colouring is somewhat lighter. Mexico. The same race occurs also in Guatemala, Hon¬ 
duras and Costa Rica, but also the typical albicollis and transitions between them occur here; the transitory 
forms are especially characterized by the claws, particularly those of the hind legs, exhibiting only single white 
hairs at the base. 
braulio. M. braulio Schs. (161 g) may be considered as the Paraguayan local race of albicollis, but the differences 
(wings coloured more yellowish-grey, with a less distinct white marking of the postmedian area of the fore¬ 
wing) disappear in the series compared with South Brazilian specimens. In general, the South Brazilian male 
specimens exhibit lighter hindwings, while those of the female hindwings are always dark brown. 
peruana. M. peruana sp.n. $ (162 a). Judging from the marking, this species is about intermediary between 
torva and tharops. uniting the elementary markings of the two species. Head, collar, and legs pinkish-brown, 
the thorax mixed with white. Abdomen pinkish-brown. Wings likewise with a pinkish-brown hue on them, 
the forewing at the distal margin with veins lined black on both sides, the median area pinkish-brown, the 
basal area blackish. Hindwing brown, lighter between the veins. Peru: Carabaya, San Domingo (Ockenden). 
Type in the Tring Museum. 
Apicale- group. 
apical is. M. apicalis H.-Sch. (Ochrosoma apicale = Zebonda basiguita Wkr.) (161 g). The colouring and size also 
of this species vary considerably. The $ shows a white spot near the base of the forewing, which is absent in 
the $. The $$ generally show a uniformly thin cover of blackish scales, with a yellow apical spot of the costa 
of the forewing and yellow fringes at the anal margins of the hindwings. The which sometimes exhibit 
the same colouring may have also yellow veins, especially on the forewing, and the hindwings are usually 
lighter. Forelegs from light yellow to white. Abdomen with a blackish dorsal stripe, or quite dark brown. 
Described from South Brazil, but widely distributed, Guiana, on the Amazons as far as Peru, Colombia. 
Iccca. M. lecca Drc. (161 g). Larger than apicalis , from which it differs also in some details of the marking. 
The yellow apical spot of the forewing is absent, and the veins are not prominently yellow. At the cell-end, 
however, there is a light spot. The distal-marginal area of the forewing is lighter, distinctly visible in the $$. 
As in apicalis. the $ lacks the white spot near the base of the forewing. Besides, the legs of the are white, 
those of the $ brown. This species likewise exhibits considerable variations of size and colourings from light 
brown to blackish brown. 
4 
liina. M. hina Dogn. (162 a). $ similar to apicalis with the light veins and the yellow prolonged apical spot 
of the forewing, but it lacks the white basal spot and exhibits a small dark spot at the cell-end. Considerable 
differences of size and variable intensities of colouring occur also here. Sometimes a yellow costal band is 
to be seen on the last third of the forewing as far as the apex. The $$ exhibit a darker colouring on an average. 
Guiana, Amazons to Peru, Panama, Colombia. 
Trossula- group. 
trossula. M. trossula Dogn. (Prismoptera) (162 a) has hyaline wings, except scanty brown and black hair at the 
base of the forewing and at the inner margin of the hindwing. Fringe black. Head and thorax brownish ochreous, 
