870 
ORYBA; LEUCORHAMPHA; MADORYX. By Dr. M. Dratjdt. 
kadeni. 
ache- 
menides. 
tripto¬ 
lemus. 
diffusa. 
ornatus. 
tongistriga. 
oiclus. 
33. Genus : Oryba Wkr. 
Similarly stout species as in Pachylia with very large projecting eyes which are not ciliated; palpi 
slender; antennae distinctly club-shaped with a long filiform terminal hook. Basal sternit of abdomen strongly 
spined. Shape of wings almost the same as in Pachylia. 
Type: achemenides Or. 
0. kadeni Schauf. (= imperialis Drc., robusta Bsd.) (98 A a) is a large beautiful species, dark green, 
more yellowish-green in the marginal area with a concave blackish-brown submarginal band which is lighter 
violettish-pink especially towards the inner margin; a broad darker green band in the centre of the wing 
is finely bordered with white proximally. Hindwing of similar colouring and marking. Panama to Bolivia 
and South Brazil. The gigantic larva is of a glaring ochre colour with large quadrangular black subdorsal 
spots, and whitish and black oblique stripes below them in the same direction as in the larvae of Pachylia ; 
a dark brown variety with whitish bands also occurs. It lives on Palicourea, a Rubiacea with tufts of red 
and white blossoms. 
0. achemenides Or. (= robusta Wkr.) (98 A a) is very similar, but more unicoloured and darker, the 
marginal area violettish-grey, much narrower, the median band scarcely darker, not bordered with white 
proximally. Basal abdominal segments much more extensively and glaringly golden yellow on the sides. Larva 
very dissimilar to that of kadeni, with enormously widened thoracal segments in the shape of a trilateral 
pyramid; cadmium-yellow with small black dorsal spots, green subdorsal lines and green and white spots below 
them. A dark brown variety may occur here, too. It lives on Ourouparia, a creeping Rubiacea with strongly 
bent thorns. Honduras to Bolivia and North Brazil. 
34. Genus: l^eiicorhamplia R. & J. 
Distinguished from the preceding ones by the forewing being angled on vein 4 and the less stout build. 
Antennae slender. Forewing with a silvery longitudinal mark on the base of vein 4. Abdomen with long strong 
conical spines on the distal tergit-margins; end of $ abdomen with a tripartite anal tuft. 
Type: L. triptolemus Or. 
L. triptolemus Gr. (98 A a). The silvery mark on the forewing is 4 — 5 mm long and forked at the 
proximal end; ground-colour light reddish lilac brown with dark brown markings and a long yellowish-white 
inner-marginal streak, a blackish-brown spot above the anal angle is notched thrice distally. From Mexico 
to Brazil. Larva greenish-yellow with a fine green dorsal line, a very short horn and a brown anal segment. 
Ventral side brown, thoracal segments very much swollen; by its terrifying attitude the larva presents a 
wonderful example of mimicry, turning its ventral side towards its enemy, inflating the thoracal segments 
still more and strikingly copying a snake’s head by 2 large black round eye-spots. It lives on species of Echi- 
tes (Apocyneae) and also occurs in a brown variety. 
L. diffusa R. & J. is very closely allied to the preceding species and chiefly differs in the much 
shorter (3 mm) silvery mark not being forked. Wings broader. Distal margin more strongly dentated, ground¬ 
colour darker; basal area and disc of forewing dusted with bluish-white like the hindwing in the submar¬ 
ginal area. Under surface redder than in triptolemus. Length of forewing: 45—47 mm. Colombia, Bolivia. 
L. ornatus Rothsch. (= triptolemus Bsd.) shows the yellow abdominal rings reduced to small dorsal 
spots, whilst they extend around the whole abdomen in the two preceding species. The silvery mark is short¬ 
er than in triptolemus, only 3 mm long, likewise forked. The ground-colour is more or less covered with green¬ 
ish-yellow scales exhibiting a bronze reflection. The larva entirely resembles that of triptolemus, but it is 
generally browner and more intensely marked grey. It lives on Zschokkea (Apocyneae). Colombia to Rio de 
J aneiro. 
L. longistriga R. & J . (98 A b). Externally very much like triptolemus , but the proximally forked sil¬ 
very mark is 10 mm long and extends to beyond the postdiscal line; the black submarginal band extends 
from the apex to vein 4. Hindwing scaled rusty brown submarginally almost to the costal margin. Brazil, 
Sa. Catharina. 
35. Genus: Msuloryx Bsd. 
Very near to the preceding genus, separated by a series of alternatingly long and short thorns at 
the posterior edges of the posterior segments of the abdomen above. The 4 species are likewise marked with 
silvery spots on the forewing. 
Type: M. oiclus Cr. 
M. oiclus Gr. (= faunus Bsd.) (98 A b). Forewing silvery grey with a slight lilac tint; 2 silvery spots 
in the darkened brown disc, the lower spot roundish quadrangular, the upper spot upright crescentiform; 
