Publ. 2. V. 1927. 
GONOMETA. By Dr. C. AurivilliuS. 
257 
G. postica Walk. (§ = effusa Walk. ; = stalii Wallengr. ; ? = marginata Walk.) (37 a). Antennae postica. 
blackish, frons, protliorax, a stripe on the sides of the collar, and the fifth dorsal joint of the abdomen yellow 
or whitish. Legs with appressed violettish-grey scales without long hair. Collar and thoracal dorsum greyish- 
reddish. Abdomen above deep red-brown, beneath blackish. Forewing above dark blackish-brown, distally 
somewhat lighter, in the centre scantily strewn with tiny light scales, and with traces of 1 or 2 darker trans¬ 
verse lines, at the base with a faint bluish reflection. Hindwing triangular, at the apex and anal angle extend¬ 
ed equally far; distal margin straightly cut off or distinctly concave; densely clad with dark brown hair, 
at the distal margin broadly hyaline, beneath at the base with a bluish reflection; veins 3 to 5 from the same 
place, not stalked. Expanse of wings: 47 to 57 mm. — §. Head and thoracal dorsum varying from a vio- 
lettish grey to a dark brown. Frons yellowish. Abdomen with yellowish hair. Forewing, as the figure shows, 
above with lighter and darker transverse bands. Hindwing yellowish-white, at the distal margin with a broad 
dark brown band, at the costal margin with a narrow one. Forewing generally with a distinct black spot at 
the end of the discal cell. Veins 4 and 5 of hindwing stalked. — Larva black with distinct though obtuse la¬ 
teral appendages, above on the centre of each segment with groups of sharp black needle-shaped bristles, these 
bristles also occurring on the sides of the body where, however, they are covered by the very long, distend¬ 
ed and bent down lateral hairs. The larva occurs in two forms, one with yellow lateral hairs, the other with 
white ones. It has been asserted that one form only yields <$<3, the other only but this has apparently 
not yet been sufficiently ascertained. The larva lives on ,,common waltle“ (Elephantorhiza Burchelli) and on 
a kind of Acacia. Natal; Transvaal; Damara Land; Delagoa Bay. 
G. mfobruiinea Auriv. $ unknown. $ similar to that of postica (37 a) in the marking of the forewing, rufobrun- 
but larger (102—108 mm) and everywhere with a bright red-brown ground-colour. Discal spot of forewing 
red-brown. Hindwing of a purer white with a light reel-brown marginal band. Abdomen above with yellow 
hair, at the apex reddish. East Africa: Ukerewe and Queque. 
G. podocarpi Auriv. The ^ is of a size and shape of the wings very similar to that of the A °f G. podocarpi. 
postica, but differently coloured. Head, thoracal dorsum, chest and legs uni-coloured chestnut-brown; ab¬ 
domen above chestnut-brown, beneath blackish. Anal pencil yellow. Both wings above and beneath uni¬ 
coloured dark chestnut-brown without any markings, beneath somewhat lighter, Hindwing at the distal margin 
deeply emarginated, not hyaline, or only at the bottom of the indentation somewhat greyish owing to the 
scanty scaling. Expanse of wings: 60 mm. — $. Body and wings dark liver-brown; forewing above with a 
faint violet hue, its base and four almost straight or somewhat curved transverse bands darker coloured; no 
discal spot. Hindwing in the centre more scantily scaled, in the apex of the discal cell and at the base of 
the areas 2 to 4 almost hyaline. Expanse of wings about 100 mm. — The larva lives on Podocarpus (a genus 
of conifers distinguished by its large, long, leaf-like needles). Elgon. 
G. badia sp. n. <$. Body dark chestnut-brown; head, collar, chest, and antennae somewhat lighter, badia. 
more yellowish-brown. Eorewing above dark blackish-brown, with a slight violet hue, without markings, 
beneath somewhat lighter with a brown anal margin. Hindwing triangular, at the anal angle and apex projecting 
equally much, at the distal margin deeply emarginated, and in the centre very broadly hyaline as far as the 
discal cell, otherwise dark red-brown. Shape of wings like that of G. postica. Expanse of wings: 80 mm. East 
Africa: Manow. At the same time with this from the same place, a £ was received, which may belong 
to the cL It corresponds, however, so exactly with the ^ figured here as G. nysa-Q (37 a), that it suffices to 
state the differences. In badia-Q the forewing above is somewhat darker at the base, its second and third 
transverse bands are almost contiguous, and the disc of the hindwing is hyaline. Expanse of wings: 130 mm. 
G. nysa Drc. $ (36 a, b). Plain, but beautifully and somewhat variably coloured, the red-brown nysa. 
colour often lighter than in the figure. Abdomen above black, with a more or less intense blue reflection. 
Hindwing often more deeply emarginated with an acute anal angle. As the $ of this species the $ figured 
here (36 a) is (doubtfully) regarded. — Larva everywhere densely clothed with black and yellow needles, and 
between them with shorter whitish or somewhat greenish scale-hairs; the lateral appendages exhibit somewhat 
longer soft, dark hairs. Cameroon. 
G. titan Holt. (36 b). The description of this plainly coloured species is made superfluous by the fi- titan. 
gures. West Africa: Ogowe. 
G. Cassandra Drc. Eorewing bright purple brown, at the anal margin somewhat reddish with a cassandra. 
submarginal row of angular spots distally bordered with white, from the apex to the anal angle. Hindwing 
brownish-black with a beautiful greenish-blue reflection, and at the distal margin broadly whitish. Under sur¬ 
face as above, but the hindwing without a blue reflection. Head and thorax dark brown. Abdomen brownish- 
black, above with a greenish-blue gloss. Underside of thorax and legs dark brown. Ventrum dingy white. 
Antennae blackish-brown. Expanse of wings: 78 mm“. Cameroon. 
G. sjdstedti Auriv. (36 c). Both sexes qiiite unicoloured light ochreous without markings. $. Hindwing sjostedti. 
at the distal margin emarginated. The gigantic larva, 14 to 16 cm long, is everywhere rather uniformly clad 
XIV 
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